Change search
Link to record
Permanent link

Direct link
BETA
Publications (10 of 108) Show all publications
Thajudeen, S., Lennartsson, M. & Elgh, F. (2020). Expanding the building system into a product platform for improved design and manufacture - A case study in Industrialised house building. Paper presented at 9th Swedish Production Symposium, SPS 2020, 21-24 April, 2020, Jönköping, Sweden.
Open this publication in new window or tab >>Expanding the building system into a product platform for improved design and manufacture - A case study in Industrialised house building
2020 (English)Manuscript (preprint) (Other academic)
National Category
Building Technologies
Identifiers
urn:nbn:se:hj:diva-48264 (URN)
Conference
9th Swedish Production Symposium, SPS 2020, 21-24 April, 2020, Jönköping, Sweden
Note

9th Swedish Production Symposium, SPS 2020. Accepted, to be published. 

Available from: 2020-05-05 Created: 2020-05-05 Last updated: 2020-05-11Bibliographically approved
Heikkinen, T., Stolt, R. & Elgh, F. (2020). Incorporating Design for Additive Manufacturing in Multidisciplinary Design Automation – Challenges Identified. Computer-Aided Design and Applications, 17(5), 936-947
Open this publication in new window or tab >>Incorporating Design for Additive Manufacturing in Multidisciplinary Design Automation – Challenges Identified
2020 (English)In: Computer-Aided Design and Applications, ISSN 1686-4360, Vol. 17, no 5, p. 936-947Article in journal (Refereed) Published
Abstract [en]

One interesting method to take advantage of the particular capabilities of Additive Manufacturing is to utilize a combination of lattice-structures and topology optimization. This paper presents the results and experiences from attempting to incorporate these in an existing multidisciplinary design automation system within the aerospace industry. A combined state of art and practice is outlined with discussions regarding challenges in current commercial CAD tools, multidisciplinary design automation, and with respect to aerospace requirements.

Place, publisher, year, edition, pages
C A D Solutions, 2020
Keywords
Design for Additive Manufacture, Multidisciplinary Design Automation, Lattice-based structural Topology Optimization
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-47384 (URN)10.14733/cadaps.2020.936-947 (DOI)2-s2.0-85078981837 (Scopus ID)
Available from: 2020-01-14 Created: 2020-01-14 Last updated: 2020-02-19Bibliographically approved
Stolt, R. & Elgh, F. (2020). Introducing design for selective laser melting in aerospace industry. Journal of Computational Design and Engineering
Open this publication in new window or tab >>Introducing design for selective laser melting in aerospace industry
2020 (English)In: Journal of Computational Design and Engineering, ISSN 2288-5048Article in journal (Refereed) Epub ahead of print
Abstract [en]

The selective laser melting (SLM) process has created new possibilities for the manufacture of new lightweight jet engine components with lattice structures replacing solid sections. Hopes are to reduce the density of the component and thereby saving weight. To introduce the new manufacturing process, the components need to be redesigned and verified to comply with an array of requirements concerning, for example, strength, aerodynamics, and manufacturing. To find out how a capability of designing and evaluating components for the SLM process can be built into an organization, an interview investigation has been conducted at an aerospace company finding the state of practice in technology and product development. The impact of introducing SLM is thereafter estimated. The result is that introducing a novel manufacturing process will primarily influence the methods used to predict product lifecycle performance. An important finding is that it is currently difficult to include a topology optimization step in the multiobjective design evaluation environment used at the company due to which the complexity would increase significantly.

Place, publisher, year, edition, pages
Oxford University Press, 2020
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-48179 (URN)10.1093/jcde/qwaa042 (DOI)
Note

Selected paper from the 25th ISTE International Conference on Transdisciplinary Engineering, 3–6 July 2018, Modena, Italy.

Available from: 2020-04-21 Created: 2020-04-21 Last updated: 2020-04-21Bibliographically approved
Heikkinen, T., Johansson, J. & Elgh, F. (2020). Multidisciplinary design automation – A conceptual framework for working with product model extensions. International Journal of Agile Systems and Management, 13(1), 28-47
Open this publication in new window or tab >>Multidisciplinary design automation – A conceptual framework for working with product model extensions
2020 (English)In: International Journal of Agile Systems and Management, ISSN 1741-9174, Vol. 13, no 1, p. 28-47Article in journal (Refereed) Published
Abstract [en]

Design automation can be used to support efficient information handling and knowledge processing in computer-based product modelling, as well as make possible new design exploration and optimisation capabilities. To be able to utilise and manage design automation systems over time, it is important to understand how the disciplinary methods and models are dependent on each other through the product model constituents and then how these relations should be built to support maintenance, leveraging and future reuse. Awareness of the concrete representation of relations could support the system's traceability and transparency, and depending on the chosen technique, comprehension and extendability can be affected. This paper presents a conceptual framework for how a set of product model constituents are, can and to some extent, should be extended to define relations in multidisciplinary design automation systems.

Place, publisher, year, edition, pages
InderScience Publishers, 2020
Keywords
multidisciplinary design automation, system relations, extended product model
National Category
Software Engineering
Identifiers
urn:nbn:se:hj:diva-48007 (URN)10.1504/IJASM.2020.105866 (DOI)2-s2.0-85082331624 (Scopus ID)PP JTH 2019 embargo 12 (Local ID)PP JTH 2019 embargo 12 (Archive number)PP JTH 2019 embargo 12 (OAI)
Available from: 2020-03-23 Created: 2020-03-23 Last updated: 2020-04-23Bibliographically approved
Thajudeen, S., Lennartsson, M., Elgh, F. & Persson, P.-J. (2020). Parametric modelling of steel connectors in a glulam-based post and beam building system - Towards a flexible product platform approach.
Open this publication in new window or tab >>Parametric modelling of steel connectors in a glulam-based post and beam building system - Towards a flexible product platform approach
2020 (English)Manuscript (preprint) (Other academic)
National Category
Building Technologies
Identifiers
urn:nbn:se:hj:diva-48265 (URN)
Note

27th International Conference on Transdisciplinary Engineering (TE2020). Accepted, to be published. 

Available from: 2020-05-05 Created: 2020-05-05 Last updated: 2020-05-11Bibliographically approved
Jansson, G., Mukkavaara, J., Elgh, F. & Lennartsson, M. (2019). Breakdown Structure in the Digitalization of Design Work for Industrialized House-Building: A Case Study of Systems Building Using Predefinition Levels of Product Platforms. In: Yaowu Wang, Ph.D., Mohamed Al-Hussein, Ph.D., and Geoffrey Q. P. Shen, Ph.D. (Ed.), ICCREM 2019: Innovative Construction Project Management and Construction Industrialization. Paper presented at Proceedings of the International Conference on Construction and Real Estate Management, 2019, Banff, Alberta, Canada, May 21–24, 2019 (pp. 49-57). American Society of Civil Engineers (ASCE)
Open this publication in new window or tab >>Breakdown Structure in the Digitalization of Design Work for Industrialized House-Building: A Case Study of Systems Building Using Predefinition Levels of Product Platforms
2019 (English)In: ICCREM 2019: Innovative Construction Project Management and Construction Industrialization / [ed] Yaowu Wang, Ph.D., Mohamed Al-Hussein, Ph.D., and Geoffrey Q. P. Shen, Ph.D., American Society of Civil Engineers (ASCE), 2019, p. 49-57Conference paper, Published paper (Refereed)
Abstract [en]

Industrialized house-building companies predefine parameters in platforms. In the strive to identify efficient information flow with automation and configuration, the design process requires a breakdown of the product structure of a building to digitally communicate between information systems. The level of predefinitions varies between industrialized house-builders according to market position, type of building processes, and maturity in business. The client decoupling point according to the predefinitions of house-building as a product is central for how and when production information is created. Bill of materials is a breakdown structure that visualize relations and the transformation between engineering, preparation, and production processes from a life cycle perspective. A case study at eight house-building companies was chosen with the aim to identify relations between the level of predefinitions and breakdown structures. House-building platforms with a high level of predefinition on layouts, components, and interfaces show a tendency to use less time in BIM-tools for engineering work and a high level of parameters in manufacturing configuration systems to prepare for production. Meanwhile, the opposite with low levels of predefinitions on components and interfaces focus on BIM-tools for engineering work with longer lead times. An interesting outcome is those with a high level of predefinitions in interfaces but lower levels on component dimensions. These companies have the ability to position their offer to a wide market with flexibility in the engineering work and need to communicate the high levels of interface parameters for the manufacturing sequence with a breakdown of the product together with architects.

Place, publisher, year, edition, pages
American Society of Civil Engineers (ASCE), 2019
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-45858 (URN)10.1061/9780784482308.006 (DOI)2-s2.0-85072934723 (Scopus ID)9780784482308 (ISBN)
Conference
Proceedings of the International Conference on Construction and Real Estate Management, 2019, Banff, Alberta, Canada, May 21–24, 2019
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-10-25Bibliographically approved
Thajudeen, S., Lennartsson, M. & Elgh, F. (2019). Challenges and critical success factors for the design phase in Swedish industrialised house building. In: Gorse & C. J. Neilson (Ed.), Proceedings of the 35th Annual ARCOM Conference, 2-4 September 2019, Leeds, UK: . Paper presented at 35th Annual ARCOM Conference, 2-4 September 2019, Leeds, UK (pp. 34-43). Association of Researchers in Construction Management (ARCOM)
Open this publication in new window or tab >>Challenges and critical success factors for the design phase in Swedish industrialised house building
2019 (English)In: Proceedings of the 35th Annual ARCOM Conference, 2-4 September 2019, Leeds, UK / [ed] Gorse & C. J. Neilson, Association of Researchers in Construction Management (ARCOM), 2019, p. 34-43Conference paper, Published paper (Refereed)
Abstract [en]

The house building industry has been characterised as less productive compared to the manufacturing industry with numerous and challenging activities including a complex integration process. For the last 20 years, industrialised house building has gained increased research and industry attention and is identified as a potential way to improve the overall house building productivity. In the overall process, the design phase has been identified as the bottleneck with several disciplines which have to be coordinated to generate a design solution that meets various customer and market requirements. Many aspects of a building's performance depend on the decisions taken in the early design process. These decisions can have a substantial impact on the overall design, lead time, cost and quality of the final product. However, there are many other important factors which need to be considered by designers during the design phase. Less attention has been paid to the identification of these factors within the design phase of the industrialised house building. Thus, the main purpose of this paper is to identify challenges and outline the critical success factors to be considered in the design phase of the Swedish industrialised house building. Qualitative research was conducted in combination with literature reviews and multiple case studies linking three Swedish house building companies. Empirical data were gathered from 20 semi-structured interviews. The study identified common challenges in the house building industry and 20 critical factors that should be addressed in the design phase from both literature and practitioners view. The result shows that fixed production is crucial for identifying the critical factors rather than a building system. Also, many challenges identified from this study could be managed by developing a platform-based approach with support tools and methods for critical factors in the design phase.

Place, publisher, year, edition, pages
Association of Researchers in Construction Management (ARCOM), 2019
Keywords
Critical success factors, Design challenges, Design management, Industrialised house building, Off-site construction
National Category
Building Technologies
Identifiers
urn:nbn:se:hj:diva-46559 (URN)2-s2.0-85077113248 (Scopus ID)9780995546349 (ISBN)
Conference
35th Annual ARCOM Conference, 2-4 September 2019, Leeds, UK
Projects
Prowood
Available from: 2019-10-15 Created: 2019-10-15 Last updated: 2020-05-05Bibliographically approved
Stolt, R., Elgh, F. & Jarfors, A. E. .. (2019). Challenges and Support when Introducing AM in HPDC Tooling. In: K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum (Ed.), K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum (Ed.), Transdisciplinary engineering for complex socio-technical systems: Proceedings of the 26th ISTE International Conference on Transdisciplinary Engineering, July 30 – August 1, 2019. Paper presented at 26th ISTE International Conference on Transdisciplinary Engineering, held at the University of Tokyo, Kashiwa Campus, July 30 – August 1, 2019, Japan (pp. 147-156). Amsterdam: IOS Press
Open this publication in new window or tab >>Challenges and Support when Introducing AM in HPDC Tooling
2019 (English)In: Transdisciplinary engineering for complex socio-technical systems: Proceedings of the 26th ISTE International Conference on Transdisciplinary Engineering, July 30 – August 1, 2019 / [ed] K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum, Amsterdam: IOS Press, 2019, p. 147-156Conference paper, Published paper (Refereed)
Abstract [en]

When manufacturing tooling inserts for HPDC (High Pressure Die Casting), several manufacturing steps such as milling, heat treatment, electro discharge machining and finally surface treatment are involved. By instead manufacturing the insert by SLM (Selective laser melting), the process is expected to be quicker and with less material waste compared to the traditional manufacturing. Examples of other expected advantages is higher product variant flexibility and the possibility of making conform cooling channels, extending the die life. However, the insert is part of a die system involving many components. The insert cannot be designed and manufactured without considering the complete die system. This paper seeks how to integrate the insert design in the die assembly design. This is done via an example component and in cooperation with die manufacturing firms. The result is that the printing is a minor step of the total manufacturing process and that special design considerations needs to be taken for an SLM insert. New die concepts are needed that will minimise the amount of material, reduce the tolerance and surface demand and support the subdivision of the die into several printed parts.

Place, publisher, year, edition, pages
Amsterdam: IOS Press, 2019
Series
Advances in Transdisciplinary Engineering, ISSN 2352-751X, E-ISSN 2352-7528 ; 10
Keywords
SLM, Additive Manufacturing, Design, Tooling, Modular
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-46843 (URN)10.3233/ATDE190118 (DOI)2-s2.0-85082536016 (Scopus ID)978-1-64368-020-0 (ISBN)978-1-64368-021-7 (ISBN)
Conference
26th ISTE International Conference on Transdisciplinary Engineering, held at the University of Tokyo, Kashiwa Campus, July 30 – August 1, 2019, Japan
Available from: 2019-11-18 Created: 2019-11-18 Last updated: 2020-04-24Bibliographically approved
Stolt, R., Elgh, F. & Heikkinen, T. (2019). Design and Evaluation of Aerospace Components for SLM. In: K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum (Ed.), K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum (Ed.), Transdisciplinary engineering for complex socio-technical systems: Proceedings of the 26th ISTE International Conference on Transdisciplinary Engineering, July 30 – August 1, 2019. Paper presented at 26th ISTE International Conference on Transdisciplinary Engineering, held at the University of Tokyo, Kashiwa Campus, July 30 – August 1, 2019, Japan (pp. 147-156). Amsterdam: IOS Press
Open this publication in new window or tab >>Design and Evaluation of Aerospace Components for SLM
2019 (English)In: Transdisciplinary engineering for complex socio-technical systems: Proceedings of the 26th ISTE International Conference on Transdisciplinary Engineering, July 30 – August 1, 2019 / [ed] K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum, Amsterdam: IOS Press, 2019, p. 147-156Conference paper, Published paper (Refereed)
Abstract [en]

Currently, the additive manufacturing process SLM (selective laser melting) is of high interest in the aerospace industry for the manufacture of jet engine components. This is driven by several factors such as reducing weight and minimizing the variation in the manufacturing process. In the paper, the state of practice in designing SLM parts is examined showing that there is plenty of opportunity to adapt designs to the process. However, this is often too time consuming in the early stages. By examining the state of art in SLM part design, the paper and identifies the variant specific cost drives that are proposed to be used to rank the manufacturability of different design alternatives for turbine frame aerospace components.

Place, publisher, year, edition, pages
Amsterdam: IOS Press, 2019
Series
Advances in Transdisciplinary Engineering, ISSN 2352-751X, E-ISSN 2352-7528 ; 10
Keywords
SLM, Additive Manufacturing, Aerospace, Design for Additive Manufacturing, DFAM, Manufacturability
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-46844 (URN)10.3233/ATDE190119 (DOI)2-s2.0-85082511882 (Scopus ID)978-1-64368-020-0 (ISBN)978-1-64368-021-7 (ISBN)
Conference
26th ISTE International Conference on Transdisciplinary Engineering, held at the University of Tokyo, Kashiwa Campus, July 30 – August 1, 2019, Japan
Available from: 2019-11-18 Created: 2019-11-18 Last updated: 2020-04-24Bibliographically approved
Raudberget, D., Elgh, F., Stolt, R., Johansson, J. & Lennartsson, M. (2019). Developing agile platform assets: exploring ways to reach beyond modularisation at five product development companies. International Journal of Agile Systems and Management, 12(4), 311-331
Open this publication in new window or tab >>Developing agile platform assets: exploring ways to reach beyond modularisation at five product development companies
Show others...
2019 (English)In: International Journal of Agile Systems and Management, ISSN 1741-9174, Vol. 12, no 4, p. 311-331Article in journal (Refereed) Published
Abstract [en]

The use of a product platform has been acknowledged as a strategic enabler for product family development and mass customisation. However, many companies struggle with adopting the common platform approach building upon pre-defined modules and components as it constrains the fulfilment of unique customer requirements and a rapid introduction of new technologies. These are the conditions under which manufacturing companies acting as suppliers operates, where unique solutions are delivered to different business customers, market segments or brands. This work reports the results from case studies of platform development conducted in collaboration with five product developing and manufacturing companies. The focus of this paper is on their initial states; including how they work with their product concept before a development project is started, the character of requirements and the adoption of product platforms. The main contribution of this work is a presentation of criteria on, and identification of, new platform elements termed design assets. These are introduced as a means to enable diverse types of resources to be reused in a company and a pragmatic way to bridge the gap between the physical products and the knowledge, tools and methods needed to realise these.

Place, publisher, year, edition, pages
InderScience Publishers, 2019
Keywords
modularisation, platform, customisation, supplier, design asset, platform element, industrial collaboration, case study, engineer-to-order, ETO.
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-47359 (URN)10.1504/IJASM.2019.104588 (DOI)2-s2.0-85078399603 (Scopus ID)
Available from: 2020-01-13 Created: 2020-01-13 Last updated: 2020-02-05Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-3677-8311

Search in DiVA

Show all publications