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Karlsson, Lennart
Publications (10 of 98) Show all publications
Lindström, J., Löfstrand, M., Kalhori, V., Helgoson, M., Nyström, M., Liljedahl, B., . . . Karlsson, L. (2016). A function innovation model for the manufacturing industry (ed.). Paper presented at . Journal of Multi Business Model Innovation and Technology, 3(1), 1-28, Article ID 1.
Open this publication in new window or tab >>A function innovation model for the manufacturing industry
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2016 (English)In: Journal of Multi Business Model Innovation and Technology, ISSN 2245-456X, Vol. 3, no 1, p. 1-28, article id 1Article in journal (Refereed) Published
Abstract [en]

The paper addresses the need for innovation in order to achieve sustainable growth and business development within the manufacturing industry, and further how that can be enabled by striving towards functions. Adopting an open perspective, the paper proposes a function innovation model involving academia, potential function providers and customers in order to create a long-term win-win situation between function providers and their customers.

National Category
Control Engineering Other Mechanical Engineering Mathematical Analysis
Identifiers
urn:nbn:se:ltu:diva-7038 (URN)10.13052/jmbmit2245-456X.311 (DOI)55c1af59-1506-49db-afe7-d02d087b8c9a (Local ID)55c1af59-1506-49db-afe7-d02d087b8c9a (Archive number)55c1af59-1506-49db-afe7-d02d087b8c9a (OAI)
Projects
Fastelaboratoriet - VINNEXC
Note
Godkänd; 2016; 20150417 (jlm)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-05-29Bibliographically approved
Lindström, J., Sas, D., Lideskog, H., Löfstrand, M. & Karlsson, L. (2015). Defining Functional Products through their constituents (ed.). Paper presented at . International Journal of Product Development, 20(1), 1-24, Article ID 1.
Open this publication in new window or tab >>Defining Functional Products through their constituents
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2015 (English)In: International Journal of Product Development, ISSN 1477-9056, E-ISSN 1741-8178, Vol. 20, no 1, p. 1-24, article id 1Article in journal (Refereed) Published
Abstract [en]

Based on empirical studies combined with a literature review, the paper proposes a comprehensive framework defining Functional Products (FP) through their constituents. The framework adds additional specificity to the literature by identifying and discussing existing and emerging constituents of FP, shedding further light on what is needed to create a long and trustful win-win situation between providers and customers in an FP context

National Category
Control Engineering Other Mechanical Engineering
Research subject
Control Engineering; Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-11812 (URN)10.1504/IJPD.2015.067273 (DOI)2-s2.0-84978140869 (Scopus ID)ad34d2ad-f476-482b-8786-83c7da7931a2 (Local ID)ad34d2ad-f476-482b-8786-83c7da7931a2 (Archive number)ad34d2ad-f476-482b-8786-83c7da7931a2 (OAI)
Projects
Fastelaboratoriet - VINNEXC
Note
Validerad; 2015; Nivå 1; 20140120 (jlm)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Karlsson, L. (2014). Computational Welding Mechanics (ed.). In: (Ed.), Richard Hetnarski (Ed.), Encyclopedia of Thermal Stresses: (pp. 630-637). Paper presented at . Dordrecht: Encyclopedia of Global Archaeology/Springer Verlag
Open this publication in new window or tab >>Computational Welding Mechanics
2014 (English)In: Encyclopedia of Thermal Stresses, Dordrecht: Encyclopedia of Global Archaeology/Springer Verlag, 2014, p. 630-637Chapter in book (Refereed)
Place, publisher, year, edition, pages
Dordrecht: Encyclopedia of Global Archaeology/Springer Verlag, 2014
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-21173 (URN)bfc70977-dab2-43ab-a1cd-91045add58f3 (Local ID)978-94-007-2738-0 (ISBN)bfc70977-dab2-43ab-a1cd-91045add58f3 (Archive number)bfc70977-dab2-43ab-a1cd-91045add58f3 (OAI)
Note
Godkänd; 2014; 20120926 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Karlsson, L., Karlberg, M. & Löfstrand, M. (2013). Editorial (ed.). Paper presented at . International Journal of Product Development, 18(1), 1-2
Open this publication in new window or tab >>Editorial
2013 (English)In: International Journal of Product Development, ISSN 1477-9056, E-ISSN 1741-8178, Vol. 18, no 1, p. 1-2Article in journal, Editorial material (Other academic) Published
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-3081 (URN)0daaf3fb-2478-45ad-9f11-f04fd2ca2052 (Local ID)0daaf3fb-2478-45ad-9f11-f04fd2ca2052 (Archive number)0daaf3fb-2478-45ad-9f11-f04fd2ca2052 (OAI)
Note
Godkänd; 2013; 20130312 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-05-29Bibliographically approved
Lindström, J., Plankina, D., Nilsson, K., Parida, V., Ylinenpää, H. & Karlsson, L. (2013). Functional Products: business model elements (ed.). In: (Ed.), Horst Meier (Ed.), Product-Service Integration for Sustainable Solutions: Proceedings of the 5th CIRP International Conference on Industrial Product-Service Systems, Bochum, Germany, March 14th - 15th, 2013. Paper presented at CIRP Conference on Industrial Product-Service Systems : 14/03/2013 - 15/03/2013 (pp. 251-262). : Springer Science+Business Media B.V.
Open this publication in new window or tab >>Functional Products: business model elements
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2013 (English)In: Product-Service Integration for Sustainable Solutions: Proceedings of the 5th CIRP International Conference on Industrial Product-Service Systems, Bochum, Germany, March 14th - 15th, 2013 / [ed] Horst Meier, Springer Science+Business Media B.V., 2013, p. 251-262Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2013
Series
Lecture Notes in Production Engineering, ISSN 2194-0525
National Category
Other Mechanical Engineering Business Administration Other Engineering and Technologies not elsewhere specified
Research subject
Computer Aided Design; Accounting and Control; Entrepreneurship and Innovation
Identifiers
urn:nbn:se:ltu:diva-39930 (URN)10.1007/978-3-642-30820-8_22 (DOI)edde3add-886a-457f-8e14-040d21996100 (Local ID)978-3-642-30819-2 (ISBN)978-3-642-30820-8 (ISBN)edde3add-886a-457f-8e14-040d21996100 (Archive number)edde3add-886a-457f-8e14-040d21996100 (OAI)
Conference
CIRP Conference on Industrial Product-Service Systems : 14/03/2013 - 15/03/2013
Projects
Fastelaboratoriet - VINNEXC
Note
Validerad; 2013; 20121213 (jlm)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-12-20Bibliographically approved
Reed, S., Löfstrand, M., Karlsson, L. & Andrews, J. (2013). Service support system modelling language for simulation-driven development of functional products (ed.). Paper presented at International Through-life Engineering Services Conference : 05/11/2013 - 06/11/2013. Procedia CIRP, 11, 420-424
Open this publication in new window or tab >>Service support system modelling language for simulation-driven development of functional products
2013 (English)In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 11, p. 420-424Article in journal (Refereed) Published
Abstract [en]

A functional product (FP) comprises of an integrated package of hardware and support services sold under a performance-based contract. A barrier to the adoption of FP is the lack of tools for obtaining predictions of availability and support costs during product development. A previous paper by the authors described a simulation-driven development strategy for designing FP that are optimised for functional availability and support costs. This iterative strategy involves representing the FP design in a modelling language; using a software code to automatically generate and analyse a simulation model from this representation to produce detailed performance predictions; and using these predictions as feedback to improve the design. The use of a modelling language facilitates the representation of the design details within the hardware and support system that influence availability and support costs. This includes the maintenance process design, maintenance strategy design and maintenance resource availability design. In this paper, an overview of a modelling language the authors have developed for this purpose is described.

National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-27575 (URN)10.1016/j.procir.2013.07.005 (DOI)000360705200077 ()84885711273 (Scopus ID)112e0565-947a-48e4-b788-83a2681bd3cc (Local ID)112e0565-947a-48e4-b788-83a2681bd3cc (Archive number)112e0565-947a-48e4-b788-83a2681bd3cc (OAI)
Conference
International Through-life Engineering Services Conference : 05/11/2013 - 06/11/2013
Note
Validerad; 2013; 20130930 (andbra); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
Lindström, J., Löfstrand, M., Karlberg, M. & Karlsson, L. (2012). A development process for Functional Products: hardware, software, service support system and management of operation (ed.). Paper presented at . International Journal of Product Development, 16(3/4), 284-303
Open this publication in new window or tab >>A development process for Functional Products: hardware, software, service support system and management of operation
2012 (English)In: International Journal of Product Development, ISSN 1477-9056, E-ISSN 1741-8178, Vol. 16, no 3/4, p. 284-303Article in journal (Refereed) Published
Abstract [en]

The development process for a Functional Product (FP) is complex and there is a need to coordinate, monitor, control and share information as well as to communicate properly among the parties involved in the process. This paper proposes a conceptual development process to manage the FP development, including development of hardware, software, service support system, and how to manage the operation of an FP. Further, challenges related to the integrated development of FPs are also discussed.

National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-7892 (URN)10.1504/IJPD.2012.049831 (DOI)2-s2.0-84866539230 (Scopus ID)6517d11e-9e5a-4866-86f4-ceae16ec5668 (Local ID)6517d11e-9e5a-4866-86f4-ceae16ec5668 (Archive number)6517d11e-9e5a-4866-86f4-ceae16ec5668 (OAI)
Projects
Fastelaboratoriet - VINNEXC
Note
Validerad; 2012; 20120510 (jlm)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Reed, S., Andrews, J., Dunnett, S., Kyösti, P., Backe, B., Löfstrand, M. & Karlsson, L. (2012). A modelling language for maintenance task scheduling (ed.). In: (Ed.), (Ed.), 11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012: PSAM11, ESREL 2012. Paper presented at European Safety and Reliability Conference : 25/06/2012 - 29/06/2012 (pp. 201-211). , 1
Open this publication in new window or tab >>A modelling language for maintenance task scheduling
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2012 (English)In: 11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012: PSAM11, ESREL 2012, 2012, Vol. 1, p. 201-211Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a modelling language for representing the details necessary to analyse and model the implementation of maintenance strategies for generic hardware. The maintenance strategy determines which, and when, restorations and inspections should take place whilst the scheduling of maintenance tasks implements these goals. The manner of maintenance strategy implementation therefore has important implications for maintenance cost and other performance metrics. Despite this, maintenance strategy optimisation models found in the literature lack detailed maintenance implementation models, which may lead to inaccurate and misleading results. The presented modelling language permits the representation of all common constraints and outcomes between maintenance tasks that influence task schedules. In doing so, it provides a platform for the future development of maintenance task schedule modelling, planning and decision support tools. The modelling language is demonstrated through application to part of a car braking system

National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-29770 (URN)3590f5dd-80be-4758-b4b3-e34aebfb2867 (Local ID)978-1-62276-436-5 (ISBN)3590f5dd-80be-4758-b4b3-e34aebfb2867 (Archive number)3590f5dd-80be-4758-b4b3-e34aebfb2867 (OAI)
Conference
European Safety and Reliability Conference : 25/06/2012 - 29/06/2012
Projects
Fastelaboratoriet - VINNEXC
Note
Godkänd; 2012; 20130212 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-29Bibliographically approved
Pahkamaa, A., Wärmefjord, K., Karlsson, L., Söderberg, R. & Goldak, J. (2012). Combining variation simulation with welding simulation for prediction of deformation (ed.). In: (Ed.), (Ed.), Proceedings of the ASME International Mechanical Engineering Congress and Exposition - 2010: presented at ASME 2010 International Mechanical Engineering Congress and Exposition, November 12 - 18, 2010, Vancouver, BC, Canada. Paper presented at ASME International Mechanical Engineering Congress & Exposition : 12/11/2010 - 18/11/2010 (pp. 81-88). New York: American Society of Mechanical Engineers, 11
Open this publication in new window or tab >>Combining variation simulation with welding simulation for prediction of deformation
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2012 (English)In: Proceedings of the ASME International Mechanical Engineering Congress and Exposition - 2010: presented at ASME 2010 International Mechanical Engineering Congress and Exposition, November 12 - 18, 2010, Vancouver, BC, Canada, New York: American Society of Mechanical Engineers , 2012, Vol. 11, p. 81-88Conference paper, Published paper (Refereed)
Abstract [en]

In most variation simulations, i.e. simulations of geometric variations in assemblies, the influence from the heating and cooling processes, generated when two parts are welded together, is not taken into consideration. In most welding simulations the influence from geometric tolerances on parts is not taken into consideration, i.e. the simulations are based on nominal parts. In this paper these two aspects, both crucial for predicting the final outcome of an assembly, are combined by linking two commercial software packages for variation simulation and for welding simulation together. Monte Carlo simulation is used to generate a number of different non-nominal parts in the variation simulation software. The translation and rotation matrices, representing the deviations from the nominal geometry due to positioning error, are exported to the welding simulation software, where the effects from welding are applied. Thereafter, the results from the welding simulation are exported back to the variation simulation software in order to compute and illustrate the deviations and variations of the final subassembly. The method is applied on a simple case, a T-weld joint, with available measurements of residual stresses and deformations. The effect of the different sources of deviation on the final outcome is analyzed and the difference between welding simulations applied to nominal parts and to disturbed parts is investigated.

Place, publisher, year, edition, pages
New York: American Society of Mechanical Engineers, 2012
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-35569 (URN)10.1115/IMECE2010-37369 (DOI)84881442285 (Scopus ID)a253a090-03ad-11e0-b767-000ea68e967b (Local ID)9780791844489 (ISBN)a253a090-03ad-11e0-b767-000ea68e967b (Archive number)a253a090-03ad-11e0-b767-000ea68e967b (OAI)
Conference
ASME International Mechanical Engineering Congress & Exposition : 12/11/2010 - 18/11/2010
Note
Godkänd; 2012; 20101209 (leka)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Pahkamaa, A., Wärmefjord, K., Karlsson, L., Söderberg, R. & Goldak, J. (2012). Combining variation simulation with welding simulation for prediction of deformation and variation of a final assembly (ed.). Paper presented at . Journal of Computing and Information Science in Engineering, 12(2)
Open this publication in new window or tab >>Combining variation simulation with welding simulation for prediction of deformation and variation of a final assembly
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2012 (English)In: Journal of Computing and Information Science in Engineering, ISSN 1530-9827, E-ISSN 1944-7078, Vol. 12, no 2Article in journal (Refereed) Published
Abstract [en]

In most variation simulations, i.e., simulations of geometric variations in assemblies, the influence from heating and cooling processes, generated when two parts are welded together, is not taken into consideration. In most welding simulations, the influence from geometric tolerances on parts is not taken into consideration, i.e., the simulations are based on nominal parts. In this paper, these two aspects, both crucial for predicting the final outcome of an assembly, are combined. Monte Carlo simulation is used to generate a number of different non-nominal parts in a software for variation simulation. The translation and rotation matrices, representing the deviations from the nominal geometry due to positioning error, are exported to a software for welding simulation, where the effects from welding are applied. The final results are then analyzed with respect to both deviation and variation. The method is applied on a simple case, a T-weld joint, with available measurements of residual stresses and deformations. The effect of the different sources of deviation on the final outcome is analyzed and the difference between welding simulations applied to nominal parts and to disturbed (non-nominal) parts is investigated. The study shows that, in order to achieve realistic results, variation simulations should be combined with welding simulations. It does also show that welding simulations should be applied to a set of non-nominal parts since the difference between deviation of a nominal part and deviation of a non-nominal part due to influence of welding can be quite large

National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
urn:nbn:se:ltu:diva-3262 (URN)10.1115/1.4005720 (DOI)000304816300002 ()2-s2.0-84857214269 (Scopus ID)1122e5b8-b681-4e78-92dc-cc815ea82150 (Local ID)1122e5b8-b681-4e78-92dc-cc815ea82150 (Archive number)1122e5b8-b681-4e78-92dc-cc815ea82150 (OAI)
Note
Validerad; 2012; Bibliografisk uppgift: Article number 021002 ; 20120308 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
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