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  • 1.
    Ahlgren, Dennis
    et al.
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Patriksson, Daniel
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Konstruktion av värmeelement2008Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    This report aims to describing the work behind the development of a masonry heater.

    The masonry heater is developed in collaboration with the company Transient Design KB that is a product development company located in Alingsås. The company sees a possibility to cover a market segment where modern technology and design are missing.

    The report presents those methods and approaches that have been used and gives an overview to how the project has been carried out. It describes how the ideas behind the final results have produced and how they have been developed during the project's time. In the report you can also read about the final concept with its choices of construction and materials.

    The report is completed with a presentation of a final concept and a ground for possible future production.

    Download full text (pdf)
    FULLTEXT01
  • 2.
    Ahmadkhaniha, Donya
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Eriksson, F.
    Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, SE-581 83, Sweden.
    Zanella, Caterina
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Optimizing heat treatment for electroplated nip and NiP/SiC coatings2020In: Coatings, ISSN 2079-6412, Vol. 10, no 12, p. 1-19, article id 1179Article in journal (Refereed)
    Abstract [en]

    NiP (P > 10 wt.%) coatings are amorphous coatings whose structure can be transformed by heat treatment into a crystalline structure and hardened by precipitation of Ni3P. In this study, NiP coatings and composite ones with SiC nanoparticles were produced by electrodeposition, and their structural transformation by heat treatment was studied using differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The microhardness and the scratch and corrosion resistance of the coatings were evaluated and compared before and after different heat treatments. The results showed that in as-plated condition, the addition of SiC particles in the coatings did not modify the microstructure, microhardness, or electrochemical behavior. However, the SiC particles’ role was disclosed in combination with heat treatment. Composite coatings that were heat treated at 300◦C had higher microhardness and scratch resistance than the pure NiP one. In addition, composite coatings maintained their scratch resistance up to 400◦C, while in the case of the NiP ones, there was a reduction in scratch resistance by heating at 400◦C. It was also concluded that heating temperature has the main role in hardness and corrosion resistance of NiP and composite coatings, rather than heating time. The optimum heat-treatment protocol was found to be heating at 360◦C for 2 h, which resulted in a maximum microhardness of about 1500 HV0.02 for NiP and its composite coating without sacrificing the corrosion resistance.

  • 3.
    Ahmadkhaniha, Donya
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Eriksson, Fredrik
    Linkopings universitet, Department of Physics, Linkoping, Sweden.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. RISE Research Institute of Sweden, Borås, Sweden.
    Zanella, Caterina
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Effect of SiC particle size and heat-treatment on microhardness and corrosion resistance of NiP electrodeposited coatings2018In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 769, p. 1080-1087Article in journal (Refereed)
    Abstract [en]

    Electrodeposition of NiP composite coatings with nano and sub-micron sized SiC has been carried out to investigate the possibility of replacing hard chromium coatings. The composition and structure of the coatings were evaluated by energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis, respectively. Microhardness was measured by Vickers indentation and polarization measurements were carried out to study the corrosion behavior of the coatings. The results showed that submicron particles can be codeposited with a higher content as compared to nano sized ones. However, even if a smaller amount of the nano-sized SiC particles are incorporated in the coating, the contribution to an increasing microhardness was comparable with the submicron sized particles, which can be related to the higher density of codeposited particles. SiC particles did not change the anodic polarization behavior of NiP coatings in a 3.5% NaCl solution. Finally, the effect of heat-treatment on the coatings properties at 400 °C for 1 h was studied to investigate the contribution of particles and heat-treatment on hardness and corrosion properties. It was found that the heat-treatment doubled the microhardness and changed the anodic polarization behavior of the coatings from passive to active with respect to the as-plated conditions.

    Download full text (pdf)
    fulltext
  • 4.
    Ahmadkhaniha, Donya
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Pinate, Santiago
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. RISE Research Institute of Sweden, Borås.
    Zanella, Caterina
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Electrodeposition of Ni high P composite coatings containing nano and submicro ceramic particles2017Conference paper (Other academic)
    Abstract [en]

    In this study, electrodeposition of Ni-P composite coatings has been carried out to investigate the possibility of replacing hard chromium coatings. Therefore, electrodeposition of Ni-P based composite coating with different SiC particle size (50 nm, 100 nm and 500 nm) or B4C (500 nm) was performed. The coating’s composition was evaluated by energy dispersive spectroscopy (EDS), microhardness of the coatings was measured by Vickers indentor and polarization measurements were carried out to study the corrosion behavior of the coatings. The results showed that B4C particles can codeposit in higher percent respect to SiC ones. Ceramic particles increased microhardness of Ni-P coatings to 700HV0.01. The polarization behavior of all the coatings in 3.5% NaCl was similar in as plated state proving that particles did not hindered the passive behaviour. Finally, the effect of heat-treatment (at 400 ºC for 1 hour) on the coating’s properties was studied to compare the contribution of particles and heat-treatment on mechanical and corrosion properties of the coatings. Heat-treatment increased the coating’s microhardness and changed the anodic polarization behavior of the coatings respect to the as plated conditions.

  • 5.
    Albo Zieme, Louise
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Bergstedt, Pontus
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    A pre-study for functional coatings evaluated on light metals to be applied on a new HPDC Mg-alloy: Investigating tribological and thermophysical properties, as-cast and coated2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Magnesium with two-thirds of the density compared to aluminium and one-quarter of steel, intrigues product developers and material scientists due to the light metal’s excellent combination of strength to weight ratio as well as their capability of being produced as a High Pressure Die Cast component compared to other ferrous or light metal alloys.

     

    However, a magnesium alloy inherits some concerning drawbacks, limiting the exploitation in structural applications and mechanical design such as automotive, heavy machinery and aerospace components. The need for a magnesium alloy that could withstand a sufficient amount of wear, temperature and corrosive environment, leads towards the investigation and evaluation of a suitable, functional coating as a solution to exploit the evident advantages a magnesium alloy exhibits. A substantial amount of research is required in order to reduce an existing knowledge gap that is the ongoing development in the search for a sufficient functional coating and adherence capability to the highly reactive substrate that is a magnesium alloy.

     

    This industrial master thesis is an early stage investigation to evaluate how the currently used aluminium substrate with an electrodeposited coating relate and compares to a heat-treated electroless deposited coating through tribological and thermophysical induced stresses. These properties are tested with proven industrial standard methods resulted in a comprehensive conclusion and discussion regarding the feasibility of applying the coating onto a commercial magnesium alloy closely related to the Mg-alloy developed by Husqvarna and thereby contributing to technological advances to the highly relevant topic within product development in materials engineering.

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    A pre-study for functional coatings evaluated on light metals to be applied on a new HPDC Mg-alloy
  • 6.
    Aliana Cervera, Gerard
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. CERN.
    Development of acomplex robot structure: Development and analysis of a cast triple traction system for the robotoperating at CERN facilities2023Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    All devices working in hazardous environments have specific requirements to reduce the intervention of human power as much as possible. The robot that this thesis is focused on is no exception to this rule. This dissertation summarized theprocess followed to achieve a theoretical design of a traction system for the CERNBot, the robot that operates at CERN facilities.

    This traction system had to be capable of achieving a speed of 10 km/h, going upstairs and make tight turns without draining completely the battery of the device. For that purpose, it was decided to include three types of traction systems such apneumatic wheel, a track system and a mecanum-wheel (an omnidirectional wheel capable of moving in any direction). This design had to include as many commercially available pieces as possible to maintain the costs contained.

    In order to comply and extend the battery lifetime as much as possible, topological optimization was applied to the non-commercial pieces, reducing the weight of thepiece by 25%.

    After achieving the weight reduction, a discussion about the best manufacturing methodology is done, comparing the manufacture using a CNC machine or casting the device, including the possible defects and costs that both models can have.

    The results show that manufacturing this piece with casting can lead to a cheaper and more complex piece.

    Download full text (pdf)
    fulltext
  • 7.
    Andersson, Petter
    et al.
    Jönköping University, School of Engineering, JTH, Lighting design.
    Petersson, Marcus
    Jönköping University, School of Engineering, JTH, Lighting design.
    En undersökning av projicerat ljus i inomhusmiljö2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Download full text (pdf)
    En undersökning av projicerat ljus i inomhusmiljö
  • 8.
    Arvidsson, Lukas
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Goncin, Dennis
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Karusellsvarvs-magasin: En lösning för 150+ verktyg2022Independent thesis Basic level (university diploma), 80 credits / 120 HE creditsStudent thesis
    Abstract [en]

    Abstract

    Purpose – The purpose of the study is to create a method to store a large number of tools fora big processing machine with a solution for tool-changing. The main issues were compiledthrough personal communication and with the product requirements requested from MFAB.

    Method – To create and produce concepts different methods were used as described in Produktutveckling - Effektiva metoder för konstruktion och design by Johannesson, Perssonand Pettersson. The concepts that were created are valued against the product requirementswith a Pughs matrix.

    Result – Information is gathered about the most commonly used solutions for tool-magazinesfor milling- and lathing-machines. Drum-magazines and linear magazines are the mostcommonly used magazines for these kinds of machines.A visual concept is described with the help of the CAD-program it was designed in and adescribing text for each part. The finished concept includes:• An enclosure to hold all the part of the magazine within the decided area.• A service-port for easy changing of tools when the magazine is not in use.• A solution for maintenance where a person can get into the magazine.• Shelves that act as a magazine, holding the tools that the machine is not using currently.• A chain that the shelves are attached to which rotates so that the shelves can reach towhere they are needed.• A linear unit that retrieves the tools from the shelves and places them into a buffer.• The buffer that holds a few tools that the machine will be using soon.• Waste disposal that takes care of any residue or scraps that might get stuck on the tools.With these parts the main issues can be answered.

    Limitations – Two limitations in this study were discovered. The first was the fact that theconstruction used more space for the magazine than it was originally calculated for. Nextlimitation was that the scope of the study over the given time limited the development for thefinal concept.

    Key words – Processing machine, Automation, Magazine, Tool handling, Construction, Safetyenclosure, Product development.

    Download full text (pdf)
    Karusellsvarvs-magasin
  • 9.
    Belov, Ilja
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Lindgren, Mats
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Johansson, Alf
    Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Danielsson, Torkel
    Sarius, Niklas
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Thermal Analysis of a Power Electronics Module in the Prototyping Phase2009In: Electronic Environment, no 4, p. 6-9Article in journal (Other academic)
  • 10.
    Belov, Ilja
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Lindgren, Mats
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Bergner, Fredrik
    Bornoff, Robin
    CFD aided reflow oven profiling for PCB preheating in a soldering process2007In: Proceedings of the 8th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Micro-Electronics and Micro-Systems: EuroSimE 2007, Piscataway, NJ.: IEEE , 2007, p. 535-542Conference paper (Refereed)
    Abstract [en]

    A CFD-aided reflow oven profile prediction algorithm has been developed and applied to modelling of preheating of a PCB with non-uniform distribution of component thermal mass in a forced air convection solder reflow oven. The iterative algorithm combines an analytic approach with CFD modelling. It requires an experimentally validated CFD model of the solder reflow oven and a CFD model of the PCB as main inputs. Results of computational experiments have been presented to reveal good agreement between predicted PCB profiles and corresponding CFD calculations. Application guidelines contained in the description of the algorithm will assist potential users both during the virtual prototyping phase of a PCB including designing for assembly and in the phase of reflow oven profiling.

  • 11.
    Belov, Ilja
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Lindgren, Mats
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Bergner, Fredrik
    Bornoff, Robin
    CFD aided reflow oven profiling for PCB preheating in a soldering process: Part 1(2)2007In: Electronic Environment, no 3, p. 25-28Article in journal (Other academic)
  • 12.
    Belov, Ilja
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Lindgren, Mats
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Bergner, Fredrik
    Bornoff, Robin
    CFD aided reflow oven profiling for PCB preheating in a soldering process: Part 2(2)2007In: Electronic Environment, no 4, p. 25-27Article in journal (Other academic)
  • 13.
    Belov, Ilja
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Wingbrant, Helena
    Spetz, Anita-Lloyd
    Sundgren, Hans
    Thuner, Bo
    Svenningstorp, Henrick
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Thermal and flow analysis of SiC-based gas sensors for automotive applications2004In: Proceedings of the 5th International Conference on Thermal and Mechanical Simulation and Experiments in Microelectronics and Microsystems, 2004: EuroSimE 2004., IEEE , 2004, p. 475-482Conference paper (Refereed)
    Abstract [en]

    Different block and tube mounting alternatives for SiC-based gas sensors were studied by means of temperature measurements and simulation of heat transfer and gas flow for steady state conditions. The most preferable tube mounting design was determined. Simulation-based guidelines were developed for designing tube-mounted gas sensors in the exhaust pipes of diesel and petrol engines, taking into account thermal constraints and flow conditions.

  • 14.
    Bergman, Martin
    et al.
    Jönköping University, School of Engineering.
    Wassenius, Christofer
    Jönköping University, School of Engineering.
    Knob Design - For The Senses2011Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This journal handles a development process towards a company called Tylö. The framework from the method Kansei Engineering (KE) is used to evaluate the semantic issues regarding functional surfaces1 of new knobs for heating devices. The physical target in this project was the development of new knobs for heater devices in the sauna environment. The development process is based on surveys, discussions with the target audience, factor analysis and measurements of the surfaces. The reader will have a general understanding of how the semantic of a product affects its users, and how a product developer could affect the final interaction between the product and the consumer. Further, the reader will become aware of the implementation of a product development process in general.  

    The survey in the project is based on a fairly unused method (KE), which basically is used for; seizing target groups feelings about a specific product to make it more optimized. KE was developed to find relationships between product experience and product properties, in order to use these properties to design products that elicit desired experiences.  

    In this project, it was more about a development process and an evaluation of specific structures on surfaces for the sauna environment, which eventually lead to a number of specially selected materials and surfaces. The design, together with special surfaces and materials, probably come to create a more elegant feeling in upcoming knobs for the heater devices in the sauna environment.

  • 15.
    Bikker, Robin
    et al.
    Jönköping University, Jönköping International Business School.
    Chavush, Serkan
    Jönköping University, Jönköping International Business School.
    A manufacturing company's approach to the 2030 UN SDGs affected by institutional differences and theory.: A master thesis within Engineering Management2023Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Sustainability and sustainable production methods are becoming more important in the manufacturing industry all around the world. Within this trend, United Nations’ formulated 2030 Sustainable Development Goals are used as a target and guideline for developing a roadmap in manufacturing companies’ schedules. For this purpose, there are some existing methods used in practice such as Triple Bottom Line (TBL) management, which is based on the environmental, economic, and social aspects of sustainability. The purpose of this study is aiming to provide insights into the role of the TBL management approach in supporting companies to achieve the UN 2030 sustainability goals. As well as contributing to the ongoing discussions on the importance of sustainable practices in achieving the significance of the study.

    The findings of this study, gathered through a combination of qualitative primary and secondary data collection, show that there are some similarities and differences between the sustainability practices depending on the SDGs. Approaches of the companies vary with factors such as legislations, culture, and other formal and informal institutions of the country. It is found that most of the Dutch companies act more proactive regarding the SDGs whereas Turkish organisations are more reactive to change. It can be seen that Turkish organisations are very much still primarily focused on the economical perspective of TBL. Dutch organisations tend to prioritise the social and the environmental aspects more than their Turkish counterparts. It can also be identified that Turkish organisations tend to be incredibly focused on legislations, whereas Dutch organisations are more often moving towards their own visions and how they want to position themselves in the market. Even though there is a significant difference between the Dutch and Turkish organisations, it can be identified that the economical aspect plays a major role in both cases. Yet the way they work towards this differs strongly. 

    Download full text (pdf)
    fulltext
  • 16.
    Cheung, Ching Chi
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Semi-automated process planning and cost estimation of turned components based on CATIA V5 Machining2008Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesis
    Abstract [en]

    To be more competitive in the market, many companies are trying to speed up the quotation process and quote more attractive prices. Therefore, they have identified a need for support in the quotation process in order to reduce the quotation lead-time and ensure a higher level of accuracy in the cost estimations. The Quotation Calculator, an application program, has been developed as part of the degree thesis which was carried out at AB Norrahammars Mekaniska Verkstad, NMW 2006/07. This Quotation Calculator can be operated to calculate the material and manufacturing costs of a new product.

    NMW has recently acquired licenses for CATIA V5, Dassault Systems, for the purpose of making process planning and NC-programming more efficient. NMW wants to generate the data needed from the machining module for the cost calculations. Hence this project was initiated in order to extract data from CATIA V5 for further use in Quotation Calculator or other computer system in NMW.

    This work has resulted in a system developed with a common hosted programming language to extract and transfer information. The system retrieves model geometry from CAD and information on process planning from CAM, then matches the information in the application for the purpose of cost estimation. The system once developed, is supposed to be used for every new product. For this approach, the relationship of the data from CATIA V5 and the Quotation Calculator has been analyzed.

    Within this thesis, the focus is on production cost estimation. The method used here is programming in Visual Basic Editor to extract information from the machining module in CATIA V5 and then import them to Microsoft Excel. With standard operations, tables of data and several inputs, the cost calculation and hence the quotation process can be automatically implemented. This work has been generated with the Quotation Calculator. With the correct input data to process planning and this new quotation system, the machining time and the costs can be estimated more accurately and easier. The time and cost information is made available for decision making. As a result, the lead time for the quotation process will be shortened and a relatively more attractive price can be quoted to the customers.

    Download full text (pdf)
    FULLTEXT01
  • 17.
    Diya, Zhang
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    John, Jithin Xavier
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Interaction between Cr coating and substrate after diffusional annealing2023Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The wear resistance and hardness of the cutting teeth of the chainsaw determine the service life and efficiency of the chainsaw. Traditionally, hard chrome coatings are used for their superior hardness and wear resistance. However, due to environmental and health concerns, traditional manufacturing methods is banned by European Union since September 2017. Existing users of hard chrome electroplating methods are asked by EU to apply for permission to use the process for a limited time. Therefore, either a new coating material or a new method is required to find a suitable replacement of hard chrome coating. This thesis examines the formation of a hard chromium carbide coating through a conversion of a pure chromium layer deposited by physical vapor deposition.

    In this study, the coated samples were first heat treated for different temperatures and times to observe the formation of chromium carbides. To characterize the heat-treated samples SEM, EDS, EBSD and nano indentation methods were used and based on these results an optimized process window is proposed to form a fully converted chromium carbide layer.

    Simulation of the conversion coating was performed using the Dictra module in Thermo-Calc in order to correlate experimental findings with future experiments. However, due to limitations within the software, it was found that the simulations are not consistent with experimental findings and cannot be used for experimental planning.

  • 18.
    Eklund, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Mathematics.
    Haugthon, Johan
    JTH, Mechanical Engineering.
    Utveckling av universaladapter för torkblad i samarbete med European Automotive Supplier AB2007Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    This report looks at the possibility of designing a universal adapter for Flat Blade windshield wipers in cooperation with European Automotive Supplier AB.

    To understand and see if this is possible, a research and an extensive patent search where done. Then to add structure to the project a Ganttschematic were developed. To generate good and solid ideas, different methods for product development were looked upon.

    When a method was chosen and applied, a series of concepts emerged. Now the focus was to design and construct all the pieces. The desired manufacture procedures were looked upon as well as materials. Lot of time where spent on designing a lock mechanism to meet the demands European Automotive Supplier AB hade given. To choose the right concept the team used a set of selection matrix for the different ideas.

    After the choices were made, different prototypes were made of the concepts. Then they were tested, and improvement on them was done to make the end product better.

    Download full text (pdf)
    FULLTEXT01
  • 19. Fredenberg, Mikael
    et al.
    Möller, Patrick
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Simulation of copper deposition by electrochemical pattern replication2009In: Timitikos Tomos sti mnimn toi Kathijiti Nikolaoi Spirelli: [¨Honorary volume dedicated to the memory of professor Nicolas Spyrellis] / [ed] P. Gyftou & E. Pavlatou, Athina: Ethniko Metsivio Polytechneio , 2009, p. 153-160Chapter in book (Other academic)
  • 20. Fredenberg, Mikael
    et al.
    Möller, Patrick
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Östling, M.
    Recent Progress in the Development of ECPR (ElectroChemical Pattern Replication) Metal Printing for Microelectronics2005Conference paper (Other academic)
  • 21.
    Ghasemi, Rohollah
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
    Elmquist, Lennart
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
    The relationship between flake graphite orientation, smearing effect, and closing tendency under abrasive wear conditions2014In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 317, no 1–2, p. 153-162Article in journal (Refereed)
    Abstract [en]

    Abstract Plastic deformation of the matrix during the wear process results in closing the graphite flakes. In this study, the relationship between the deformation of the matrix and the closing tendency of flake graphite was investigated, both qualitatively and quantitatively. Two representative piston rings, which belonged to the same two-stroke marine engine but were operated for different periods of time, were studied. Initial microstructural observations indicated a uniform distribution of graphite flakes on unworn surfaces, whereas worn surfaces demonstrated a tendency towards a preferred orientation. Approximately 40% of the open flakes of the unworn surfaces were closed during sliding, which may result in the deterioration of the self-lubricating capability of cast iron. Moreover, flakes within the orientation range of 0 to 30° relative to the sliding direction showed a maximum closing tendency when subjected to sliding. The closing tendency gradually decreased as the angle increased, approaching a minimum between 30 and 70°. A slight increase in the closing tendency was observed for flakes with orientations between 70 and 90°. A similar trend was observed on both rings. Furthermore, SEM and EDS analysis indicated substantial deformation of the matrix in the area around the flakes. An insignificant corrosion attack was observed on both worn piston ring surfaces.

  • 22.
    Gunnarsson, Niklas
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Hald, J
    Hultman, L
    Influence of Ultrasound on filling of Grooves during Ni Electrodeposition2009Conference paper (Other academic)
  • 23. Gunnarsson, Niklas
    et al.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Wang, X.
    Svensson, M.
    Vieider, C.
    Hultman, L.
    Electrochemically based low-cost high precision processing in MOEMS packaging2009In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 54, no 9, p. 2458-2465Article in journal (Refereed)
    Abstract [en]

    Precision processing in MOEMS (micro-opto-electromechanical systems) packaging has been studied based on electrochemical processes with the purpose of establishing technology for low-cost multifunctional encapsulation of microsystems and assembly of opto-electric access links in polymer.

    The electrochemically based processes studied in this paper include:

    1.Electroforming of a polymer moulding tool (stamper) in a nickel sulphamate electrolyte on a high-precision 3D etched silicon template.

    2.Patterning of 3D surfaces by an electrophoretic photoresist.

    3.Precision plating of Au and Sn for self-alignment of chips by eutectic Au–Sn solder.

    The results show that nickel stampers with adequately low internal stress can be electroformed on 3D silicon wafers. Furthermore, 3D polymer samples manufactured by the nickel stampers can be patterned with metal lines down to 20 μm width using electrophoretic photoresist. Finally, eutectic Au–Sn solder bumps are realized by electroplating of Au and Sn followed by reflowing, satisfying the demands on dimension and alloy composition control over a 4 in. Si wafer.

  • 24.
    Gunnarsson, Niklas
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Wang, X.
    Svensson, M.
    Vieider, C.
    Hultman, L.
    Low-cost high precision processing in MEMs packaging based on electrochemical processes2007Conference paper (Other academic)
  • 25.
    Hansal, W.E.G.
    et al.
    Happy Plating, Austria.
    Sandalache, G.
    Happy Plating, Austria.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
    Pulse-electrodeposited NiP-SiC composite coatings2013In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 114, p. 851-858Article in journal (Refereed)
    Abstract [en]

    This paper describes the effect of modulated bipolar current (pulse reverse plating) on the incorporation of micron and submicron sized SiC particles within an electrodeposited Ni–P alloy matrix (dispersion coating). Based on electrochemical measurements, a pulse plating process has been defined and the effects of pulse parameters (type of current, frequency of current pulses and current density), the electrolyte composition and the size of the silicon carbide on the particles incorporation rate, phosphorus co-deposition rate, surface morphology, structure, micro hardness and wear resistance of the deposits has been investigated.

    The experimental results show that the phosphorus co-deposition and the particles incorporation rate decrease applying higher current density. The reduction of particle size decreases the co-deposition content of the particles within the coating. Application of pulsed current leads to a more compact composite coating, significantly improving the hardness and the tribological behaviour of the Ni/SiC deposits, mainly at higher frequency of the applied current pulses. DC and bipolar pulses generate unfavourable higher co-deposition rate of phosphorus, hence a loss in hardness has been observed. Tailored shift of the properties and alloy composition during the deposition process can be achieved by change of matrix properties via alternation of the pulse sequences.

  • 26. Helbo, C.
    et al.
    Møller, Patrick
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Acreo.
    The use of mathematical modelling in optimisation of the pulse plating of copper on printed circuit boards2000Conference paper (Other academic)
  • 27.
    Kus, Ömer
    et al.
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Mojtabavi, Hamed
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Redesign of a Shock Absorber Piston Using Sintering2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The main objective of this report is to re-design of a product by substituting for another manufacturing process in order to get a cheaper product with the same function and quality. The current shock absorber piston is manufactured by the machining process at Öhlins Racing AB Company. Power Metallurgy (P/M) method could be a good substitute process to meet the technical requirements of the current piston with total lower cost. In this case, the whole process of product development gets involved in designing two new pistons from base-design to final product. One design is assigned to a cheaper P/M process as called Conventional Press and Sinter. Another P/M process as called Metal Injection Molding (MIM) is considered to produce the more expensive piston. According to the design guidelines of P/M processes, the base pistons are modelled in a three dimensional environment, and then an appropriate powder metal is selected for each. Consequently, the next stage is to analyse the piston strengths by Finite Element Method under the static and dynamic loadings. Fatigue analysis is taken into consideration for the cyclic loadings, and the static strength can be assessed for the static loading mode. The results show the infinite fatigue life for two different designs, and no plastic deformation is observed during analysing of the pistons under static loading. Cost estimation is the last stage of this master thesis. Compared to the total costs for the current design, the total estimations for the whole final P/M products can prove the significant drop in the final prise for each design. Thus, environmental and financial issues are already met in achieving the new pistons in this project by saving considerably money and energy. On-going stages will be to make prototype and get them tested under the real working conditions in respect to the standards.

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  • 28.
    Larsson, Kristoffer
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Nyutveckling av Huddigs spakkonsoler för modellerna 1060 och 12602008Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    Abstract

    The author Kristoffer Larsson wrote this examinations paper for the excavator loader company Huddig AB in Hudiksvall. The subject for this bachelor’s thesis is development of joystick pads at Huddig. The background for the bachelor's thesis is that Huddig have been during the last years developed and redesigning the interior of the cabin. The problem is that the joystick brackets haven’t followed the same development. The goal with this bachelor's thesis is to develop and manufacture four prototypes with consideration on design, ergonomics, bottom positions, control of steering, rototilt, choice of material and manufacturing method.

    To get a picture of what the drivers want and theirs aspect of the development of the joysticks pads the author did a market research with Huddigs customers. After the market research was done some methods and functions solving methods was used to break down the product to different functions.

    Eight different concepts were generated and the finial concepts were selected of a group from Huddig and Kristoffer Larsson. They selected the concepts because they taught that they were best suited to manufacture prototypes of. These are the subjects of the concepts:

    − Conic underpart

    − Angular design

    − Double rows with bottoms at left bracket

    − Tilted steering control

    − Tilted transport direction shifter

    − Two hand grip for steering

    − Placement of hydraulic lifters

    From these comments and aspects the author drew four sketches to have as guidelines for the prototypes. The reason to make prototypes was that it is hard to anticipate if a concept works in the real life based from a sketch.

    The goal with this bachelor's thesis was to design and manufacture innovated concepts which have been done. From the result of the bachelor's thesis Huddig can use it to continue to develop the joystick brackets to a successful product.

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  • 29.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
    About the effect of anodic pulses and periodic current reversion on electrodeposits2012Conference paper (Refereed)
  • 30.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Deposizione pulsate di cromo duro con inversione di corrente2008In: Galvanotecnica e nuove finiture, ISSN 1121-855X, Vol. 2, p. 84-89Article in journal (Other academic)
  • 31.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
    Pulse plating of copper on printed circuit boards2012In: Pulse Plating: including 25 tables / [ed] W. Hansal & S. Roy, Eugen G. Leuze Verlag , 2012Chapter in book (Refereed)
  • 32.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Pulse reversal plating of hard chromium2008In: Galvanotecnica e nuove finiture, ISSN 1121-855X, Vol. 2, p. 84-89Article in journal (Other academic)
  • 33.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Pulse reversal plating of hard chromium2008Conference paper (Other academic)
  • 34.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Survey of pulse plating of copper from sulphuric acid solutions2010Conference paper (Other academic)
  • 35.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Influence of process parameters on crack formation in direct current and pulse reversal plated hard chromium2009In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 87, no 2, p. 90-96Article in journal (Refereed)
    Abstract [en]

    It has for a long time been known that crack free chromium coatings can be obtained by pulse reversal plating, but it has only much later been understood that reoxidation of hydrogen from the surface during the anodic periods is essential for obtaining crack free deposits. In this paper, it is shown that a specific anodic charge depending on the charge of the previous cathodic pulse is needed to obtain a crack free coating and that residual stress in the coating will be less at more frequent current reversals. Furthermore, too large an anodic charge will result in redissolution of chromium and thereby decrease the current efficiency.

  • 36.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Møller, Patrick
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Additive-free pulse reversal plating of cupper on printed circuit boards2003In: EAST-Forum 2003, 2003Conference paper (Refereed)
  • 37.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
    Hansal, W.
    Pulse plating of chromium2012In: Pulse Plating / [ed] Wolfgang E. G. Hansal & Sudipta Roy, Bad Saulgau: Eugen G. Leuze Verlag , 2012, p. 250-268Chapter in book (Refereed)
  • 38.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. RISE Research Institutes of Sweden, Borås/Stockholm, Sweden.
    Johansson, E.
    RISE Research Institutes of Sweden, Borås/Stockholm, Sweden.
    Aspects to be considered when making innovation out of promising research results in surface technology2019In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 97, no 2, p. 67-72Article in journal (Refereed)
    Abstract [en]

    In the eyes of industrialists, scientists often exaggerate the economic potential of their findings. The industrialists know that developing a new technology to production is associated with uncertainty and risks. To elucidate the challenges faced by the surface treatment industry, this paper discusses aspects that should be considered when making innovation out of promising research results. The Technology Readiness Level (TRL) metric for assessing maturity of a technology is discussed and exemplified. Additional risks of fluid character such as legislation, price of raw material and customer expectations are also discussed. Even though, the subject is of general relevance, the present discussion refers to surface technology and examples are given from copper plating of printed circuit boards, and durable and cost-efficient coatings on electrical connectors. 

  • 39.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Möller, Patrick
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Fredenberg, Mikael
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Pulse reversal plating of copper for electronics applications2006Conference paper (Other academic)
  • 40.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Möller, Patrick
    Fredenberg, Mikael
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Recent progress in pulse reversal plating of copper for electronics applications2007In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 85, no 1, p. 40-45Article in journal (Refereed)
    Abstract [en]

    Based on demands for modern printed circuit board (pcb) manufacturing, the copper electroplating process is discussed. Electroplating from an additive free solution using low frequency pulse reversal plating with superimposed cathodic pulsation is suggested, which meets the demands for precise dimensions, high ductility and conductivity, low costs and environmental friendliness.

  • 41.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. RISE Research Institutes of Sweden, Borås, Sweden.
    Nielsen, Lars Pleth
    Danish Technological Institute, Tribology Centre, Aarhus, Denmark.
    Offshoring and backshoring of surface finishing from the perspective of the Nordic countries2019In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 97, no 2, p. 54-56Article in journal (Refereed)
    Abstract [en]

    Backshoring of production to Western Europe has become an increasingly important trend after decades of offshoring. The subject is introduced by a general discussion followed by a specific analysis of the Nordic surface finishing industry. The main finding is that production quality is the main driver for backshoring of surface finishing. 

  • 42.
    Leisner, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing. RISE Res Inst Sweden, Elect Dept, Borås, Sweden.
    Zanella, Caterina
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Application of Assaf panel for evaluating throwing power of pulse reverse electroplating on complex geometries2018In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 96, no 5, p. 258-264Article in journal (Refereed)
    Abstract [en]

    The Assaf panel arrangement was used for evaluating pulse reverse plating processes and optimisation of the throwing power (TP) of complex three-dimensional (3D) geometries. Two different electroplating processes were investigated: an acid copper bath and a cyanide silver bath without additives. It has not been possible to establish a direct correlation factor for TP obtained with the Assaf panel and the 3D objects included in the trials. Nevertheless, the Assaf panel was found to be a useful tool for preliminary process parameter optimisation. The copper bath needs agitation to deposit coatings of good quality, whereas the silver bath obtains the best throwing power without agitation. The latter is probably due to inhibition by adsorbed cyanide.

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  • 43. Lindgren, Mats
    et al.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Johansson, Alf
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Danielsson, Torkel
    Gunnarsson, Niklas
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Multi-disciplinary Approach to Design of a Power Electronics Module for Harsh Environments2009In: Thermal, Mechanical and Multi-Physics simulation and Experiments in Microelectronics and Microsystems, 2009: EuroSime 2009, 2009, p. 1-8Conference paper (Refereed)
    Abstract [en]

    A set of experimental and computer simulation methods has been applied to reliability analysis of a newly designed resin transfer molded power electronics module for automotive applications, comprising the glass-fiber epoxy multi-layer PCB, populated with various electronic packages. Evaluation of thermo-mechanical stability, determination of moisture ingress, and testing the adhesion quality between the molding compound and the module PCB have been performed along with investigation of heat transfer paths in the module. The experiments in harsh environments have revealed thermo-mechanical stability and acceptable moisture ingress for the module test samples with relatively large BGA components on the glass-fiber epoxy PCBs of different thickness and different solder mask types. Thermal images of the module have been obtained and the CFD model was created and validated with temperature measurements in power-on tests. Extreme heat dissipation modes have been studied by modeling.

  • 44.
    Lindgren, Mats
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Thermal and thermo-mechanical analysis for design evaluation of an automotive radar module2004In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 20, no 7, p. 709-726Article in journal (Refereed)
    Abstract [en]

    The influence of the substrate technology, assembly method, and housing material on the thermal, thermo-mechanical and cost performance of a radar module for automotive applications has been studied to address the product reliability aspects during the design phase. Flip chip and wire bonding have been evaluated for Multi-Chip Module—Laminate/Deposition (MCM-L/D) and Multi-Chip Module—Deposition (MCM-D) substrate technologies used for electronic packaging solutions in a harsh environment. Solder ball and direct attachment have been investigated as second-level assembly. As a result of thermal and thermo-mechanical simulations and cost analysis, radar module designs combining MCM-D and MCM-L/D with wire bonding have been revealed, which are preferable for use in different temperature environments with respect to two performance criteria, the maximum junction temperature and the manufacturing cost. Simulation-based guidelines have been developed for designing radar modules used in automotive applications while satisfying temperature and stress constraints provided for the module.

  • 45.
    Lindgren, Mats
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Törnvall, Magnus
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Application of simulation-based decision making in product development of an RF module2007In: Microelectronics and reliability, ISSN 0026-2714, E-ISSN 1872-941X, Vol. 47, no 2-3, p. 302-309Article in journal (Refereed)
    Abstract [en]

    This paper presents results of simulation-based design evaluation for thermal and thermo-mechanical performance and cost of packaging technology of a RF module for automotive application. Combination of thermal, thermo-mechanical and cost analysis within the multi-attribute decision making enabled design ranking and revealed two MCM-L/D and MCM-D designs with wire bonding assembly preferred for use in automotive applications for different temperature environments. Simulation-based design guidelines were developed for designing electronic modules exhibiting good thermal and thermo-mechanical performance. By application-based partitioning of the importance weights assigned to the reliability and cost criteria, the guidelines were extended to cover other application areas.

  • 46.
    Lindgren, Mats
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Belov, Ilja
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Törnvall, Magnus
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Application of simulation-based decision making in product development of an RF module2004In: 5th IEEE conference in Thermal and Mechanical Simulation and Experiments in Micro-Electronics and Micro-Systems: EuroSimE 2004, 2004, p. 233-240Conference paper (Refereed)
    Abstract [en]

    This paper presents results of simulation-based design evaluation for thermal and thermo-mechanical performance and cost of packaging technology of an RF module for automotive applications. A combination of thermal, thermo-mechanical and cost analysis within the multi-attribute decision making framework enabled design ranking and revealed two MCM-L/D (multi-chip module-laminate/deposition) and MCM-D (deposition) designs with the wire bonding assembly preferred for use in automotive applications for different temperature environments. Simulation-based design guidelines were developed for designing electronic modules exhibiting good thermal and thermo-mechanical performance. By application-based partitioning of the importance weights assigned to the reliability and cost criteria, the guidelines were extended to cover other application areas.

  • 47. Mukai, Kusuhiro
    et al.
    Matsushita, Taishi
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Interfacial Physical Chemistry of High-Temperature Melts2019Book (Refereed)
  • 48.
    Mäkinen, Katri
    Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
    Optimisation of local material parameters: Optimising local material parameters in ductile cast iron cylinder head casting2021Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The constantly tightening emission regulations demand the engines to be moreefficient, to get more power out of smaller engines. Higher engine loads andcomponent temperatures are causing more stresses to engine components. Therefore,a company that produces engines wanted to study if it would be possible to increasethe capabilities of the components by optimising the used material.

    In this final project work, a cylinder head will be studied. The cylinder heads for theengines are made of ductile cast iron. The limits of that material are near safety limits,and therefore a better material is needed. In this work are some previous studiesanalysed and tried to find how to optimise the used material. The optimised materialshould have better thermal conductivity properties combined with sufficient strengthproperties.

    Previous studies were analysed to gather knowledge of the elements that affect thematerial parameters. Those studies showed that copper, silicon, pearlite fraction, andthe use of chills are the elements to be optimised. Silicon and pearlite fraction waschosen as optimisation parameters because of their effect on the thermal conductivityand strength properties. Copper was chosen as an optimisation variable due to its effecton the pearlite formation. Chills were used to affect the cooling rate and thereby thepearlite formation.

    The work was made using MAGMASOFT™ simulation software to simulate cylinderhead casting. The simulated cylinder head was divided into 4 parts for the simulations.For those sections were then set targets for pearlite fraction according to previousstudies. The silicon content was kept constant in the simulation, based on the studiespresented in this work. Copper content was simulated with variations from 0 to 0.7weight-%, and chill heights were simulated from 20 to 60 mm and without chills.

    After simulating the different variables, the results were analysed. Then the selectedcasting simulation result was mapped to finite element simulation mesh to include thelocal material parameters to finite element simulation. With the finite elementsimulation, the estimated lifetime of the component was simulated.

    By analysing the casting simulation results, an optimal combination was found. Theoptimal material parameters for a cylinder head casting would be copper 0.5weight-%, silicon 1.9 weight-% and chills thicker than 40 mm on the flame plate. Theoptimised material gives more possibilities to develop engines even further when thecomponent demands are growing.

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  • 49. Möller, Patrick
    et al.
    Fredenberg, M.
    Dainese, M.
    Aronsson, C.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Östling, M.
    Metal printing of copper interconnects down to 500 nm using ECPR: Electrochemical pattern replication2006In: Microelectronic Engineering, ISSN 0167-9317, E-ISSN 1873-5568, Vol. 83, no 4-9, p. 1410-1413Article in journal (Refereed)
    Abstract [en]

    rinting of copper patterns with dimensions from 100 μm down to 500 nm lines and 280 nm space was demonstrated using electrochemical pattern replication with a master electrode (template) having a pattern depth of 2500 nm. SEM measurements were done to measure the mean line width as well as CD variations on the master and the replicated copper lines. It was found that accurate replication of 500 nm thick metal patterns was enabled by the process and that CD variations in the master were dominating compared to the variations introduced by the electrochemical pattern transfer itself.

  • 50.
    Möller, Patrick
    et al.
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Fredenberg, Mikael
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Dainese, M.
    Aronsson, C.
    Leisner, Peter
    Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Östling, M.
    Metal Printing of Interconnects Down to 500 nm Using ECPR: ElectroChemical Pattern Replication2005Conference paper (Other academic)
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