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2024
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1. |
Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. Smart Control of Springback in Stretch Bending of a Rectangular Tube by an Artificial Neural Network. Journal of Manufacturing Science and Engineering 2024 NTNU
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2023
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2. |
Akram, Md Ali; Holthe, Ragnar; Ringen, Geir. Rapid Sorting of Post-consumer Scrap Aluminium Alloys Based on Laser-Induced Breakdown Spectroscopy (LIBS). IFIP Advances in Information and Communication Technology 2023 ;Volum 4. s. 241-255 NTNU
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3. |
Assuad, Carla Susana A; Øien, Christian Dalheim; Ringen, Geir. Circularity assessment of the effects of customer preferences towards sustainable development on producers for aluminum-based products in Norway. Procedia CIRP 2023 ;Volum 120. s. 804-809 NTNU
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4. |
Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. On Kinematics in Sequential Three-Dimensional Stretch Bending: Analytical Springback Model. International Manufacturing Science and Engineering Conference (MSEC 2023); 2023-06-12 - 2023-06-13 NTNU
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Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. On Kinematics in Sequential Three-Dimensional Stretch Bending: Analytical Springback Model. Journal of Manufacturing Science and Engineering 2023 ;Volum 145.(7) s. - NTNU
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6. |
Holthe, Ragnar; Ringen, Geir. Rapid Sorting of Post-consumer Scrap Aluminium Alloys Based on Laser-Induced Breakdown Spectroscopy (LIBS). IFIP International Conference on Advances in Production Management Systems; 2023-09-18 - 2023-09-20 NTNU
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7. |
Ringen, Geir. Case innen verdikjedebetraktninger i Industri 4.0. I: Industri 4.0 - digitalisering av prosesser i produksjon. Fagbokforlaget 2023 ISBN 9788245039931. s. 161-166 NTNU
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8. |
Ringen, Geir. Produktutvikling. I: Industri 4.0 - digitalisering av prosesser i produksjon. Fagbokforlaget 2023 ISBN 9788245039931. s. 23-36 NTNU
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9. |
Ringen, Geir; Furu, Trond. Aluminium long span suspension bridges - ambitions, opportunities and challenges. 15th International Aluminium Conference - INALCO; 2023-10-11 - 2023-11-13 NTNU
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10. |
Ringen, Geir; Sandnes, Lise; Welo, Torgeir; Rolle, R.. The effect of gap variations on the quality of thick-walled FSW joints. The 12th Aluminium Two Thousand World Congress; 2023-09-18 - 2023-09-22 NTNU
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11. |
Sariyarlioglu, Eren Can; Negozio, Marco; Ma, Jun; Welo, Torgeir; Ringen, Geir. Effect of Die Design on Charge Welds in Aluminium Extrusion. The 14th International Conference on the Technology of Plasticity; 2023-09-24 - 2023-09-29 NTNU
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12. |
Sariyarlioglu, Eren Can; Negozio, Marco; Ma, Jun; Welo, Torgeir; Ringen, Geir. Effect of Die Design on Charge Welds in Aluminium Extrusion. Springer 2023 (ISBN 978-3-031-41022-2) 11 s. NTNU
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13. |
Sarkar, Aritra; Razavi, Nima; Ringen, Geir; Welo, Torgeir. Assessing the fatigue behaviour of recycled Al-alloys: A critical review. Materialia 2023 ;Volum 32. NTNU
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14. |
Welo, Torgeir; Ringen, Geir. Factors impacting implementation of Lean in Engineering. Lean Six Sigma World Conference; 2023-03-15 - 2023-03-16 NTNU
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2022
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15. |
Elkjær, Aksel Sean; Ringen, Geir; Bjørge, Ruben; Hagen, Catalina Hoem Musinoi; Lædre, Sigrid; Magnusson, Niklas. Reliability of Bolted Aluminum Busbars for Battery Systems: Effect of Nickel Coating and Corrosive Environment. IEEE Transactions on Transportation Electrification 2022 ;Volum 9.(1) s. 1060-1071 NTNU SINTEF ENERGISINT
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16. |
Elkjær, Aksel Sean; Sørhaug, Jørgen A; Ringen, Geir; Bjørge, Ruben; Grong, Øystein. Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process. Journal of Manufacturing Processes 2022 ;Volum 79. s. 626-638 NTNU SINTEF
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17. |
Fragapane, Giuseppe; Schulte, Kjersti Øverbø; Eleftheriadis, Ragnhild; Reke, Eivind; Ringen, Geir. A Cross-disciplinary, cross-organizational approach to sustainable design and product innovation in the aluminum industry. Procedia CIRP 2022 ;Volum 107. s. 59-64 SRAUFOSS NTNU
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18. |
Kovalevskaya, Daria; Pedersen, Ann-Charlott; Holmen, Elsebeth; Kaloudis, Aris; Ringen, Geir. Triads in Lean Management: Analyzing Buyer–Supplier-Supplier and Buyer–Supplier-Supplier’s Supplier Relationships for Zero-Defect Manufacturing. Journal of the Knowledge Economy 2022 s. - NTNU
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19. |
Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Ringen, Geir. On Dimensional Control in Rotary Stretch Bending of Aluminum Profiles: Loading-Path Effects. Manufacturing Letters 2022 ;Volum 33. s. 242-248 NTNU
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20. |
Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. Towards a shared vision in innovation projects: Understanding actor involvement as a preventative approach against defensive routines for innovation capability. Procedia CIRP 2022 ;Volum 107. s. 34-39 NTNU
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21. |
Ringen, Geir. Value Chain Data Integrity and Quality - A Case Study. INCOSE International Symposium 2022 ;Volum 32.(S2) s. 90-98 NTNU
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22. |
Ringen, Geir; Landsem, Kristin Lorentzen; Holtskog, Halvor. Design for Excellence to Explore Complex Product Service Systems: A Case Study. Procedia CIRP 2022 ;Volum 109. s. 690-694 NTNU
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23. |
Ringen, Geir; Welo, Torgeir. Framework for Predicting Dimensional Accuracy of 3D-Formed Aluminum Profiles – Based on Industry 4.0 Principles. ET22 - Aluminum Extruders Council; 2022-05-03 - 2022-05-05 NTNU
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24. |
Ringen, Geir; Welo, Torgeir; Breivik, Sissel Marie. Rapid Manufacturing of Die-casting Tools - a Case Study. Procedia CIRP 2022 ;Volum 107. s. 1565-1570 NTNU
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25. |
Shafqat, Ali; Oehmen, Josef; Welo, Torgeir; Ringen, Geir. The role of risk mitigation actions in engineering projects: An empirical investigation. Systems Engineering 2022 ;Volum 25.(6) s. 584-608 NTNU
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2021
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26. |
Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. A computer vision-based, in-situ springback monitoring technique for bending of large profiles. 24th International Conference on Material Forming; 2021-04-14 - 2021-04-16 NTNU
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27. |
Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. A strategy for on-machine springback measurement in rotary draw bending using digital image-based laser tracking. The International Journal of Advanced Manufacturing Technology 2021 ;Volum 119. s. 705-718 NTNU
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28. |
Hansen, Irina-Emily; Mork, Ola Jon; Welo, Torgeir; Ringen, Geir. Bridging the ‘Valley of Death’: Can Agile Principles Be Applied in Industry-Academia Research and Innovation Projects?. Journal of the Knowledge Economy 2021 s. - NTNU
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29. |
Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Ringen, Geir. On Dimensional Control in Rotary Stretch Bending of Aluminum Profiles: Loading-Path Effects. 50th SME North American Manufacturing Research Conference (NAMRC 50, 2022); 2021-06-27 - 2021-07-01 NTNU
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30. |
Ma, Jun; Welo, Torgeir; Ringen, Geir. Efficient Prediction of Real-Time Forming Forces in Flexible Stretch Bending. 24th International Conference on Material Forming; 2021-04-14 - 2021-04-16 NTNU
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31. |
Ringen, Geir; Welo, Torgeir. Material substitution innovation - trajectories towards circular economy. XXXII ISPIM Innovation Conference - Innovating Our Common Future; 2021-06-20 - 2021-06-23 NTNU
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32. |
Ringen, Geir; Welo, Torgeir. Material substitution innovation - trajectories towards circular economy. I: Proceedings on the 2021 ISPIM innovation conference : Innovating our common future. ISPIM Lappeenranta University of Technology Press 2021 ISBN 9789523354678. NTNU
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2020
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33. |
Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. In-line Springback Measurement for Tube Bending Using a Laser System. 23rd International Conference on Material Forming; 2020-05-04 - 2020-05-08 NTNU
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34. |
Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. In-line Springback Measurement for Tube Bending Using a Laser System. Procedia Manufacturing 2020 ;Volum 47. s. 766-773 NTNU
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35. |
Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. A feasibility study of continuous grain refinement of sheet metal. 48th SME North American Manufacturing Research Conference; 2020-06-22 - 2020-06-26 NTNU
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36. |
Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. A feasibility study of continuous grain refinement of sheet metal. Procedia Manufacturing 2020 ;Volum 48. s. 379-387 NTNU
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37. |
Holtskog, Halvor; Ringen, Geir. The insufficiency of lean tradition - Lean meets kodak moments. Procedia CIRP 2020 ;Volum 93. s. 944-948 NTNU
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38. |
Ma, Jun; Ha, Taekwang; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Li, Heng. Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending. Procedia Manufacturing 2020 ;Volum 47. s. 774-780 NTNU
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39. |
Ma, Jun; Ha, Taekwang; Welo, Torgeir; Blindheim, Jørgen; Ringen, Geir. Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending. 23rd International Conference on Material Forming; 2020-05-04 - 2020-05-08 NTNU
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40. |
Ringen, Geir; Holtskog, Halvor; Welo, Torgeir. A Novel Value Driven Co-creation Framework. I: Advances in Production Management Systems : The Path to Digital Transformation and Innovation of Production Management Systems : IFIP WG 5.7 International Conference, APMS 2020, Novi Sad, Serbia, August 30 – September 3, 2020, Proceedings, Part I. Springer Nature 2020 ISBN 978-3-030-57992-0. s. 663-671 NTNU
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41. |
Ringen, Geir; Lodgaard, Eirin Anita. Interorganizational Learning in Manufacturing Networks. APMS 2020; 2020-08-30 - 2020-09-03 SRAUFOSS NTNU
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42. |
Ringen, Geir; Pålsrud, Frode Gulbrandsen; Lodgaard, Eirin Anita. Interorganizational Learning in Manufacturing Networks. I: Advances in Production Management Systems : The Path to Digital Transformation and Innovation of Production Management Systems : IFIP WG 5.7 International Conference, APMS 2020, Novi Sad, Serbia, August 30 – September 3, 2020, Proceedings, Part I. Springer Nature 2020 ISBN 978-3-030-57992-0. s. 680-686 NTNU SRAUFOSS
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43. |
Ringen, Geir; Welo, Torgeir. Material substitution innovation - trajectories towards circular economy. I: Proceedings of the 2020 ISPIM Innovation Conference (Virtual) Event : Innovating in Times of Crisis. ISPIM Lappeenranta University of Technology Press 2020 ISBN 9789523354661. NTNU
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44. |
Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir. Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study. Procedia Manufacturing 2020 ;Volum 50. s. 37-44 NTNU
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45. |
Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir. Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study. 18th International Conference on Metal Forming; 2020-09-13 - 2020-09-16 NTNU
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46. |
Welo, Torgeir; Ringen, Geir; Ma, Jun. An overview and evaluation of alternative forming processes for complex aluminium products. Procedia Manufacturing 2020 ;Volum 48. s. 82-89 NTNU
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47. |
Welo, Torgeir; Ringen, Geir; Rossi, Monica. Investigating Maturity of Lean Culture in Product Development Teams. Lecture Notes in Networks and Systems 2020 ;Volum 122. s. 375-384 NTNU
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2019
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48. |
Barua, Deep; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. An experimental study on interference friction welding process. Procedia Manufacturing 2019 ;Volum 41. s. 1149-1155 NTNU
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49. |
Beste, Carina; Welo, Torgeir; Ringen, Geir. Newness and Outcomes in Commodity-Driven New-Product Development Projects: A Survey in the Norwegian Manufacturing Industry. Procedia CIRP 2019 ;Volum 84.(29) s. 749-754 NTNU
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50. |
Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. Studying design thinking as a forthcoming source to innovation speed. Proceedings of the International Conference on Engineering Design 2019 ;Volum 1.(1) s. 2357-2366 NTNU
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