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  • 1.
    Balasubramaniam, Arjun
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Navuluri, Naga Lakshmana Naidu
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Analysis and improvement of material handling in a highly customized multi-variant product-based production system2020Självständigt arbete på avancerad nivå (masterexamen), 80 poäng / 120 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Twenty first century manufacturing is characterized by customer specific products. Customers expect greater differentiation in the products that companies offer to them, thus changing the whole landscape of production. Greater the variety of products being offered to customers, greater is the complexity of shop floor operations. This complexity is translated to all the operations in the shop floor including material handling and inventory control. To overcome this situation, many manufacturers have turned to “Lean Manufacturing” to gain a competitive edge in the market by reducing costs and improving productivity in all operations throughout the shop floor.

    Therefore, this purpose of this thesis is to analyze the material handling of a highly customized multi-variant product-based production system. The thesis represents a case study that was done at a caravan manufacturing company in Tenhult, Sweden. During the study, data was gathered from field notes, observations and multiple semi-structured interviews. The findings were analyzed with respect to a theoretical background which was generated through an extensive literature review that was carried out throughout the research.

    Our analysis was based on a systems approach where the findings were categorized into three dimensions that affect material handling and inventory control. These dimensions are warehouse management systems, culture, and production management, which contribute to successful implementation of lean into the material handling operations and inventory control.

    In conclusion, the results show that efficient material handling and inventory control can only be achieved by finding a synergy between technology, people and organization. Our results also show that soft issues like organizational culture and employee culture need to be addressed along with technological issues because only when an alignment between people, technology and business objectives and values is achieved, lean implementation can be successful. Our results also show the need for better supplier customer collaboration to reduce inventory levels and material handling operation.

  • 2.
    Bergström, Adam
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Jödicke, Luisa
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Reconfigurability Assessment Model: Assessment of a Manufacturing System's Current State2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Today’s global market and growing competition set an increasing strain to manufacturing companies. Shorter product lifecycles automatically lead to shorter production ramp up periods and, therefore, set a higher strain on the manufacturing systems. The concept of reconfigurable manufacturing systems (RMS) was developed in the early 1990s and has now gained more interest than ever. An RMS is designed to quickly respond to changes in market demand, by adapting its functionality as well as its capacity to the current market requirements. In order to achieve this, an RMS is characterised by six core characteristics: modularity, integrability, diagnosability, convertibility, scalability and customisation. By complying with these characteristics, the manufacturing system can meet the required responsiveness to functionality and capacity changes. Academia has been focusing on the development and design of new RMSs, however, there is a lack in research on converting existing manufacturing systems towards reconfigurability. Additionally, few models assessing a manufacturing system’s current state in terms of reconfigurability are available in literature. The existing reconfigurability assessment models were proven to be rather theoretical and difficult to use by practitioners in industry. Therefore, the need for a reconfigurability assessment model applicable in industry arose. This study focuses on the analysis of enablers of a reconfigurability manufacturing systems as well as on assessing the reconfigurability of an existing manufacturing system in an industrial setting. For this purpose, a detailed reconfigurability assessment model has been developed, based on literature studies and a case study at a case company. A focus of the development of the model has been set on usability in industry. The outcome was an assessment model developed in Microsoft Excel that gives an overview on the reconfigurability of each characteristic as well as the manufacturing system’s overall reconfigurability. The model was subsequently tested and verified at the case company. The final reconfigurability assessment model is presented and explained at the end of this study. This study shows, that through the use of theory about RMS and input from industry it was possible to develop a current state assessment model regarding reconfigurability. To make the model generalisable and adaptable to different industrial settings, further testing in different manufacturing fields and research within RMS is required.

  • 3.
    Chandrashekar, Sharath
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Sawalekar, Vishal
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Forecast and Context Driven Sales & Operations Planning2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 4.
    Das, Sudip Kumar
    et al.
    Bharti School of Engineering, Laurentian University, Sudbury, Ontario, Canada.
    Cenanovic, Mirza
    Jönköping University, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Zhang, Junfeng
    Bharti School of Engineering, Laurentian University.
    A physics-based estimation of mean curvature normal vector for triangulated surfaces2019Ingår i: Proceedings of the International Geometry Center, ISSN 2072-9812, Vol. 12, nr 1, s. 70-78Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this note, we derive an approximation for the mean curvature normal vector on vertices of triangulated surface meshes from the Young-Laplace equation and the force balance principle. We then demonstrate that the approximation expression from our physics-based derivation is equivalent to the discrete Laplace-Beltrami operator approach in the literature. This work, in addition to providing an alternative expression to calculate the mean curvature normal vector, can be further extended to other mesh structures, including non-triangular and heterogeneous meshes. 

  • 5.
    Devarakonda, Rakesh Raghavendra
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Ramachandrareddy, Sumanth
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Production System waste reduction using Value stream mapping: An Industrial case study2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The rapid rise in global population and market demands have mandated industries to introduce better and quality products to meet up their rushing needs. However, achiev-ing such goals need optimal production system and robust strategies. Exploring in depth it can be visualized that most of the manufacturing set ups suffers losses or relatively lower benefits due to improper and high wastages. Hence it is very important for man-ufacturing industries to explore the techniques which help them to improve their pro-duction system. The key techniques from Lean Manufacturing (LM) such as Value Stream Mapping (VSM) and Ishikawa diagram were explored in this work for enhanc-ing production capacity, reducing rework, reducing wastages and arriving to a well-defined optimal process flow which in turn help in achieving higher productivity. How-ever, the implementation of Lean and Value stream mapping depends on the production scale and has its own significance to different manufacturing setup. With that motive, in this thesis work the emphasis was made on exploring VSM technique for better pro-duction optimization in manufacturing sector.

  • 6.
    Dhayanithi, Amarnath
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Sureshkumar, Deepak
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    COST OPTIMIZATION IN PRODUCTION SYSTEMS: USING LEAN MANUFACTURING2020Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    In the era of globalization, every company is trying its best to sustain its company’s name and their product in its respective market.

    The overreach goal of the thesis to optimize the cost in the production system using lean manufacturing. To attain the primary goal of the thesis, three layered approach has been carried out.

    Firstly, the non-value-added activities in the shop floor has been identified. The tools like VSM and spaghetti diagram is used to identify the non-value-added activities

    Secondly, the lead time of a particular product has been calculated for a particular product. The lean tools like JIT,5s, TQM, TPM has been used to reduce the lead time. TQM is used to identify the quality issues, TPM is used to identify the maintenance problems and JIT &5s is used to identify the problems in tool arrangement and delivery of the raw materials.

    The last part of the thesis is to measure the cost-effectiveness by implementing lean manufacturing to produce a particular product family. Tools like Activity based costing is used to allocate the cost involved in the various activities that can be measured by the cost drivers and cost pool. To measure the performance of the production system OEE is used in this thesis

  • 7.
    Eriksson, Gusten
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Persson, Karin
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Organisational ambidexterity in manufacturing SMEs: An empirical study of managers’ and workers’ perceptions of ambidextrous elements2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Organisational ambidexterity is considered a key to company survival and performance. Despite this, organisational ambidexterity is still a poorly understood phenomenon, especially in an SME context. The purpose of this study was therefore to investigate how the compliance with ambidextrous elements is perceived at different levels in manufacturing SMEs, to increase the understanding of organisational ambidexterity in this context. The empirical data was collected through a combination of questionnaire and interview. The case companies in this report perceive that they comply stronger with contextual elements than with structural elements. The strong compliance with contextual elements is motivated by the lack of hierarchies, flexibility in the company, different management structure and low number of employees. This allows employees to perform the contextual elements such as initiative-taking, cooperating, brokering and multitasking. The structural elements including e.g. vision, values, strategies, senior team responsibility and alignment are perceived differently at different  hierarchal levels, indicating that there are subcultures within the hierarchal levels within a company. The biggest difference can be found between the middle managers and the top managers,. Workers perceive that they are not included in explorationb within the company, and that the exploration occur more sporadically than those for exploitation. The definitions of exploration and exploitation vary between the companies which results in a lack of consensus. This makes it difficult for the companies to perform the changes necessary in order to develop and achieve long-term sustainable growth i.e. economical sustainability. The managerial implication of this report concerns four actions: (1) create a common definition for exploration, (2) develop goals for exploration, (3) communicate for buy-in and (4) involve all employees.

  • 8.
    Jonsson Egeman, Mathilda
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Adapting the lead time tree model to include immaterial activities: Extending the lead time tree model to enable mapping, efficiency evaluation and waste identification in order fulfillment processes2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Much research regarding efficiency in manufacturing industry has historically been focused on the material activities of the shop floor. However, companies that merely focus on material activities when trying to improve lead times, risk losing potential for improvements within immaterial activities such as planning, engineering, design, and purchasing, which often constitute the most time consuming parts of the order fulfillment processes. Engineer to order (ETO) products are particularly time consuming regarding their immaterial activities, and the customer is waiting for the products from the very beginning of the order fulfillment process. Shortening the lead time to customer for ETO products is therefore important for customer satisfaction.

    The aim of this study is to adapt an existing lead time tree model currently focused on material activities to also include immaterial activities, enabling a full visualization of all activities contained in order fulfillment processes. The lead time tree model would thereby be able to use as a tool when working on shortening the lead time to customer. A further aim of the study is to investigate how the adapted lead time tree model can be used in further areas as well, in addition to visualizing immaterial activities.

    The adaption of the lead time tree model has been based on the original literary source of the lead time tree model. The original lead time tree model has been analyzed towards theoretical data from a literature study, and towards empirical data about immaterial activities in order fulfillment processes for ETO products, from the case company Kongsberg Maritime Sweden AB (previously Rolls-Royce AB). The result of this has been an adapted lead time tree model that can visualize immaterial activities.

    Several adaptions of the original lead time tree model have been made for it to be able to visualize immaterial activities, while still keeping the basics of the original model. The adapted lead time tree model comprises information that is normally kept separated and that is important when planning and improving a process. Additional information that is needed for each specific case can also easily be included in the lead time tree. The adapted lead time tree model has proven to have additional areas of use within project planning, improvement work regarding lead time reduction and root-cause analysis, and as a boundary object for communication between internal actors and between internal and external actors.

    The adapted lead time tree model is presumably able to map and visualize immaterial activities in other fields of business as well, other than manufacturing, as the nature of immaterial activities remains the same across business environments.

  • 9.
    MEHTA, ADVAIT
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Subramanian, Mahalingam
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Investigating the barriers to increase Levels of Automation.: A case study in pre-assembly of tap changer assembly line.2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The overarching goal of this thesis is to investigate and explore the barriers that a company would face while increasing the Levels of Automation (LoA), in the preassembly production unit. To achieve the primary goal of investigating the barriers this study takes a threefold approach.

    Firstly, the current LoA was measured for the preassembly workstations. This measurement was conducted by incorporating an existing methodology adapted from the literature review known as DYNAMO++ methodology. This method is incorporated such that, the current LoA of the preassembly workstations could be measured and analysed.

    The current LoA of the preassembly workstations are analysed to investigate the potential workstations where LoA could be increased, in line with the company’s triggers for implementing automation. For this, experiences of the personnel’s belonging to the operational level of preassembly workstations were incorporated, to find the scope of improvements for increasing the LoA. Additionally, the company’s triggers for implementing automation was investigated from the managerial level.

    The research questions were answered by adapting an explorative, single case study method. Additionally, four types of data collection techniques were used, such as – interviews, focus groups, observations, and document analysis. Subsequently, source triangulation was adapted to analyse the data collected; to develop a comprehensive understanding of the barriers identified.,

    Finally, the barriers faced by the company to increase LoA are identified by considering the implications that the improvement opportunities would impose upon the production systems environment.

    The identified barriers were then categorised further based on factors that exist internal as well as external to the production systems environment.

    The barriers identified in this study highlights various factors that the management must consider beforehand while initiating automation decisions in future automation projects in the preassembly area. Regardless of the barriers faced by the company, there are more opportunities to improve manufacturing processes through automation technologies. This thesis contributes to the knowledge of the factors that restrain the implementation of automation technologies and how companies could deal with it.

  • 10.
    Sege, Victoria
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Balta, Pelda
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Benefits & barriers of implementing reconfigurable jigs: A study in offsite manufacturing of unique house elements in Sweden2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The aim of this paper is to identify the enablers, barriers and benefits of implementing reconfigurable jigs in the off-site manufacturing of unique house elements. Due to de- mands on customization, volume and lowering the cost, there is a need to increase flex- ibility in the industry. The paper focuses on mainly two phases of implementation, which are manufacturing, design and engineering.

    The research questions are answered by applying a single case study method, taking place in a Swedish house manufacturing company. The study consists of four different techniques – interviews, time study, observations, and questionnaire which are sup- ported with an additional literature review. Hence, research questions are answered from a triangulation approach providing nuanced and dynamic perspectives.

    From observations and time study it is concluded that in current situation, changeover in manufacturing is time-consuming due to the difference in complexity of product var- iants, along with a complex and inefficient setup process that is not responsive to a changeable environment. Findings imply that the barriers in both phases include lack of knowledge about reconfigurability, communication, current capabilities of CAD sys- tems as well as training and education. Enablers are found to be awareness of the needs of improvements, long-term mindset and working with product platforms. The benefits of implementing reconfigurable jigs include a reduction of setup time in manufacturing, better storage and sharing of information along with a better interpretation of that in- formation, a better structure in the organisation.

  • 11.
    Vijayakumar, Vivek
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Tom, Arun
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Industriell produktutveckling, produktion och design, JTH, Produktionsutveckling.
    Lead a concept proof to use RFID technology in tracing of bulky goods in logistics: Bring Logistics, Torsvik2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
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