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Lars Pejryd

Title: Senior Professor School/office: School of Science and Technology

Email:

Phone: +46 19 303861

Room: T2279

Lars Pejryd

Research subject

About Lars Pejryd

Lars Pejryd is a professor in Mechanical Engineering. For more than three decades he has been active in research and development of materials and manufacturing methods that are in use by mechanical industry. With empoyments both in industry and academia he has a broad experience of both worlds and since 2013 he is active at Örebro University building a research environment together with industrial partners.

Pejryds scientific productions contains more than 100 scientific papers and three patents. His publications are covering a broad field of manufacturing methods and materials.

At Örebro University the research is focused towards understanding of how material properties varies in/through the component given the geometry of the product, the manufacturing process used and the material used. This in order to improve the support for the mechanical design process. Manufacturning processes that are studied are e.g. additive manufacturing, wire drawing, forming and converting of package based material e.g. paper & carton board. The work also include development and use of computed tomography methods (CT).

Publications

Articles in journals |  Conference papers |  Manuscripts | 

Articles in journals

Larsson, J. , Karlsson, P. & Pejryd, L. (2020). The effect of bearing length on the surface quality of drawn wires. Wire Journal International, 53 (2), 50-55.
Zekavat, A. R. , Jansson, A. , Larsson, J. & Pejryd, L. (2019). Investigating the effect of fabrication temperature on mechanical properties of fused deposition modelling parts using X-ray computed tomography. The International Journal of Advanced Manufacturing Technology, 100 (1-4), 287-296.
El-Amine, K. , Larsson, J. & Pejryd, L. (2018). Experimental comparison of roller die and conventional wire drawing. Journal of Materials Processing Technology, 257, 7-14.
Jansson, A. , Hermanek, P. , Pejryd, L. & Carmignato, S. (2018). Multi-material gap measurements using dual-energy computed tomography. Precision engineering, 54, 420-426.
Larsson, J. , Jansson, A. & Pejryd, L. (2017). Process monitoring of the wire drawing process using a web camera based vision system. Journal of Materials Processing Technology, 249, 512-521.
Pejryd, L. , Larsson, J. & Olsson, M. (2017). Process monitoring of wire drawing using vibration sensoring. CIRP - Journal of Manufacturing Science and Technology, 18, 65-74.
Jansson, A. & Pejryd, L. (2016). A dual-energy approach for improvement of the measurement consistency in computed tomography. Measurement science and technology, 27 (11).
Beno, T. , Repo, J. & Pejryd, L. (2013). The use of machine tool internal encoders as sensors in a process monitoring system. International Journal of Automation Technology, 7 (4), 410-417.

Conference papers

Larsson, J. , Karlsson, P. , Ekengren, J. & Pejryd, L. (2021). Enhanced Cooling Design in Wire Drawing Tooling Using Additive Manufacturing. In: Mirko Meboldt, Christoph Klahn, Industrializing Additive Manufacturing Proceedings of AMPA2020. Paper presented at The 2nd International Conference on Additive Manufacturing for Products and Applications (AMPA 2020), Zürich, Switzerland, September 1-3, 2020. (pp. 426-436). Springer, Cham.
Jansson, A. & Pejryd, L. (2019). In-situ computed tomography investigation of the compression behaviour of strut, and periodic surface lattices. In: Rolf Diederichs, iCT 2019. Paper presented at 9th Conference on Industrial Computed Tomography (iCT) 2019, 13-15 Feb, 2019, Padova, Italy (pp. 221-227). NDT.net.
Larsson, J. , Karlsson, P. & Pejryd, L. (2019). The effect of bearing length on the surface quality of drawn wire. Paper presented at 89th Annual Convention of the Wire Association International, Atlanta, USA, May 13-16, 2019.
Larsson, J. , Jansson, A. & Pejryd, L. (2019). Wire 4.0. Paper presented at Wire & Cable, Verona, Italia, 21-22 October 2019 (pp. 185-198).
Pejryd, L. & Larsson, J. (2018). Additively manufactured tool holder for wire drawing processes. In: Euro PM 2018 Congress and Exhibition. Paper presented at Europe's Annual Powder Metallurgy Congress and Exhibition (EURO PM2018), Bilbao, Spain, October 14-18, 2018. EPMA.
Zekavat, A. R. , Pejryd, L. & Gundlach, C. (2018). Effect of X-Ray Computed Tomography Magnification on Porosity Analysis of Additively Manufactured Parts. In: World PM2018 Congress Proceedings. Paper presented at 2018 World Congress on Powder Metallurgy (WORLDPM2018), Beijing, China, September 16-20, 2018.
Zekavat, A. R. , Jansson, A. , Gundlach, C. & Pejryd, L. (2018). Effect of X-ray Computed Tomography Magnification on Surface Morphology Investigation of Additive Manufacturing Surfaces. In: 8th Conference on Industrial Computed Tomography. Paper presented at iCT conference 2018, Wels, Austria, 7 February, 2018.
Pejryd, L. (2018). Evaluation of internal defects in additive manufactured metallic network structures by Computed Tomography. Paper presented at 8th International Conference in Industrial Computed Tomography (iCT), Wels, Austria, February 6-9, 2018. N D T Internet Publishing.
Sadeghimeresht, E. , Karimi, P. , Zhang, P. , Peng, R. , Andersson, J. , Pejryd, L. & Joshi, S. (2018). Isothermal Oxidation Behavior of EBM-Additive Manufactured Alloy 718. In: Ott, E.; Liu, X.; Andersson, J.; Bi, Z.; Bockenstedt, K.; Dempster, I.; Groh, J.; Heck, K.; Jablonski, P.; Kaplan, M:, Nagahama, D.; Sudbrack, C, Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives Energy, Aerospace, and Industrial Applications. Paper presented at 9th International Symposium on Superalloy 718 and Derivatives - Energy, Aerospace, and Industrial Applications, Champion, PA, USA, September 17-21, 2000 (pp. 219-240). Springer.
Jansson, A. , Ekengren, J. & Pejryd, L. (2018). Numerical analysis of compression strength in network structures based on trusses, and periodic surfaces aimed for additive manufacturing. In: C.K. Chua, W. Y. Yeong, M. J. Tan, E. J. Liu, S. B. Tor, Proceedings of the International Conference on Progress in Additive Manufacturing. Paper presented at 3rd International Conference on Progress in Additive Manufacturing (PRO-AM 2018), Singapore, Singapore, May 14-17, 2018 (pp. 328-333). Singapore: Nanyang Technological University.
Jansson, A. & Pejryd, L. (2018). Surface vs Truss lattice networks, benefits and limitations. In: NAFEMS nordic Exploring the Design Freedom of Additive Manufacturing through Simulation. Paper presented at NAFEMS Nordic 2018, Göteborg, Sweden, 24-25 April, 2018 (pp. 217-218). NAFEMS.
Jansson, A. & Pejryd, L. (2017). Characterisation of additive manufacturing metal: carbon-fibre composite bond by dual-energy computed tomography. In: EUSPEN, Conference Proceedings, Special Interest Group Dimensional Accuracy and Surface Finish in Additive Manufacturing, Octrober 2017. Paper presented at EUSPEN, Conference Proceedings, Special Interest Group: Dimensional Accuracy and Surface Finish in Additive Manufacturing, Katholieke Universiteit Leuven, October 2017 (pp. 189-192). KU Leuven, Belgium: EUSPEN.
Karlsson, P. , Pejryd, L. & Oikonomou, C. (2017). Factors Influencing Mechanical Properties of Additive Manufactured Thin-Walled Parts. In: Euro PM2017 Congress Proceedings. Paper presented at Euro PM2017 Congress & Exhibition, Milan, Italy, October 1-5, 2017. European Powder Metallurgy Association (EPMA).
Surreddi, K. B. , Oikonomou, C. , Karlsson, P. , Olsson, M. & Pejryd, L. (2017). In-situ Micro-tensile Testing of Additive Manufactured Maraging Steels in the SEM: Influence of Build Orientation, Thickness and Roughness on the Resulting Mechanical Properties. Paper presented at Euro PM2017 Congress & Exhibition, Milan, Italy, October 1-5, 2017.
Hällgren, S. , Pejryd, L. & Ekengren, J. (2016). 3D data export for Additive Manufacturing - improving geometric accuracy. In: 26th CIRP Design Conference. Paper presented at 26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016 (pp. 518-523). Amsterdam: Elsevier.
Hällgren, S. , Pejryd, L. & Ekengren, J. (2016). Additive Manufacturing and High Speed Machining - Cost comparison of short lead time manufacturing methods. In: 26th CIRP Design Conference. Paper presented at 26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016 (pp. 384-389). Amsterdam: Elsevier.
Johansson, A. , Pejryd, L. & Christiernin, L. G. (2016). Consideration of market demand volatility risks, when making manufacturing system investments. In: 13th Global Conference on Sustainable Manufacturing - Decoupling Growth from Resource Use. Paper presented at 13th Global Conference on Sustainable Manufacturing - Decoupling Growth from Resource Use, Binh Dong New City, Vietnam, September 16-18, 2015 (pp. 307-311). Elsevier.
Jansson, A. , Ekengren, J. , Zekavat, A. R. & Pejryd, L. (2016). Effects of X-ray Penetration Depth on Multi Material Computed Tomography Measurements. In: iCT 2016. Paper presented at 6th Conference on Industrial Computed Tomography (iCT 2016), Wels, Austria, February 9-12, 2016 (pp. 143-150). NDT.net.
Johansson, A. , Christiernin, L. G. & Pejryd, L. (2016). Manufacturing system design for business value, a holistic design approach. In: 26th CIRP Design Conference. Paper presented at 26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016 (pp. 659-664). Amsterdam: Elsevier.
Pejryd, L. , Karlsson, P. , Hällgren, S. & Kahlin, M. (2016). Non-destructive evaluation of internal defects in additive manufactured aluminium. Paper presented at World PM 2016, Powder Metallurgy World Congress, Hamburg, Germany, October 9-13, 2016.
Pejryd, L. & Hällgren, S. (2016). Product- and knowledge centric Additive Manufacturing research in Sweden. In: 7th Swedish Production Symposium 2016. Paper presented at 7th Swedish Production Symposium 2016, Lund, 25-27 October, 2016.
Johansson, A. , Pejryd, L. & Christiernin, L. G. (2016). Production support model to manage market demand volatility risks. In: Westkamper, E; Bauernhansl, T, Factories of the Future in the digital environment Proceedings of the 49th CIRP Conference on Manufacturing Systems. Paper presented at 49th CIRP Conference on Manufacturing Systems (CIRP-CMS), Stuttgart, Germany, May 25-27, 2016 (pp. 664-668). Elsevier.
Hällgren, S. , Pejryd, L. & Ekengren, J. (2016). (Re)Design for Additive Manufacturing. In: 26th CIRP Design Conference. Paper presented at 26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016 (pp. 246-251). Amsterdam: Elsevier.
El-Amine, K. & Pejryd, L. (2016). Study and optimization of changeover procedures in wire drawing. In: 7th Swedish Production Symposium (SPS 16). Paper presented at 7th Swedish Production Symposium (SPS 16), Lund, Sweden, October 25-27, 2016.
Zekavat, A. R. & Pejryd, L. (2016). Surface characterization of additively manufactured Al10SiMg thin-walled structures. In: 7th Swedish Production Symposium. Paper presented at 7th Swedish Production Symposium, Lund, Sweden, October 25-27, 2016.
Jansson, A. , Zekavat, A. R. & Pejryd, L. (2015). Measurement of internal features in additive manufactured components by the use of computed tomography. Paper presented at Digital Industrial Radiology and Computed Tomography (DIR 2015), Ghent, Belgium, June 22-25, 2015. German Society for Non-Destructive Testing.
Larsson, J. & Pejryd, L. (2015). Preliminära resultat från jämförelse mellan konventionell dragning och dragning med Roller Dies. Paper presented at Nordisk trådteknisk förening (NTTF), Årsmöteskonferens, Ed, Sweden, September 24-25, 2015 (pp. 103-111). Linköping:
Zekavat, A. R. , Pejryd, L. & Ekengren, J. (2015). Tracking the shape deformation of voids from tensile loading by the use of computed tomography. In: Digital Industrial Radiology and Computed Tomography (DIR 2015). Paper presented at Digital Industrial Radiology and Computed Tomography (DIR 2015), Ghent, Belgium, June 22-25, 2015.

Manuscripts