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  1. Employees

Språkvelger

Norsk

Geir Ringen

Geir Ringen

Professor
Department of Mechanical and Industrial Engineering

geir.ringen@ntnu.no
+4773593816 Verkstedteknisk, Gløshaugen
Publications Teaching Media

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2022

  • Elkjær, Aksel Sean; Ringen, Geir; Bjørge, Ruben; Hagen, Catalina Hoem Musinoi; Lædre, Sigrid; Magnusson, Niklas. (2022) Reliability of Bolted Aluminum Busbars for Battery Systems: Effect of Nickel Coating and Corrosive Environment. IEEE Transactions on Transportation Electrification. volum 9 (1).
    Academic article
  • Elkjær, Aksel Sean; Sørhaug, Jørgen A; Ringen, Geir; Bjørge, Ruben; Grong, Øystein. (2022) Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process. Journal of Manufacturing Processes. volum 79.
    Academic article
  • Fragapane, Giuseppe; Schulte, Kjersti Øverbø; Eleftheriadis, Ragnhild; Reke, Eivind; Ringen, Geir. (2022) A Cross-disciplinary, cross-organizational approach to sustainable design and product innovation in the aluminum industry. Procedia CIRP. volum 107.
    Academic article
  • Kovalevskaya, Daria; Pedersen, Ann-Charlott; Holmen, Elsebeth; Kaloudis, Aris; Ringen, Geir. (2022) Triads in Lean Management: Analyzing Buyer–Supplier-Supplier and Buyer–Supplier-Supplier’s Supplier Relationships for Zero-Defect Manufacturing. Journal of the Knowledge Economy.
    Academic article
  • Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Ringen, Geir. (2022) On Dimensional Control in Rotary Stretch Bending of Aluminum Profiles: Loading-Path Effects. Manufacturing Letters. volum 33.
    Academic article
  • Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. (2022) Towards a shared vision in innovation projects: Understanding actor involvement as a preventative approach against defensive routines for innovation capability. Procedia CIRP. volum 107.
    Academic article
  • Ringen, Geir. (2022) Value Chain Data Integrity and Quality - A Case Study. INCOSE International Symposium. volum 32 (S2).
    Academic article
  • Ringen, Geir; Landsem, Kristin Lorentzen; Holtskog, Halvor. (2022) Design for Excellence to Explore Complex Product Service Systems: A Case Study. Procedia CIRP. volum 109.
    Academic article
  • Ringen, Geir; Welo, Torgeir; Breivik, Sissel Marie. (2022) Rapid Manufacturing of Die-casting Tools - a Case Study. Procedia CIRP. volum 107.
    Academic article
  • Shafqat, Ali; Oehmen, Josef; Welo, Torgeir; Ringen, Geir. (2022) The role of risk mitigation actions in engineering projects: An empirical investigation. Systems Engineering. volum 25 (6).
    Academic article

2021

  • Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2021) A strategy for on-machine springback measurement in rotary draw bending using digital image-based laser tracking. The International Journal of Advanced Manufacturing Technology. volum 119.
    Academic article
  • Hansen, Irina-Emily; Mork, Ola Jon; Welo, Torgeir; Ringen, Geir. (2021) Bridging the ‘Valley of Death’: Can Agile Principles Be Applied in Industry-Academia Research and Innovation Projects?. Journal of the Knowledge Economy.
    Academic article
  • Ringen, Geir; Welo, Torgeir. (2021) Material substitution innovation - trajectories towards circular economy. Proceedings on the 2021 ISPIM innovation conference : Innovating our common future.
    Academic chapter/article/Conference paper

2020

  • Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) In-line Springback Measurement for Tube Bending Using a Laser System. Procedia Manufacturing. volum 47.
    Academic article
  • Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) A feasibility study of continuous grain refinement of sheet metal. Procedia Manufacturing. volum 48.
    Academic article
  • Holtskog, Halvor; Ringen, Geir. (2020) The insufficiency of lean tradition - Lean meets kodak moments. Procedia CIRP. volum 93.
    Academic article
  • Ma, Jun; Ha, Taekwang; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Li, Heng. (2020) Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending. Procedia Manufacturing. volum 47.
    Academic article
  • Ringen, Geir; Holtskog, Halvor; Welo, Torgeir. (2020) A Novel Value Driven Co-creation Framework. 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.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Pålsrud, Frode Gulbrandsen; Lodgaard, Eirin Anita. (2020) Interorganizational Learning in Manufacturing Networks. 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.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Welo, Torgeir. (2020) Material substitution innovation - trajectories towards circular economy. Proceedings of the 2020 ISPIM Innovation Conference (Virtual) Event : Innovating in Times of Crisis.
    Academic chapter/article/Conference paper
  • Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir. (2020) Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study. Procedia Manufacturing. volum 50.
    Academic article
  • Welo, Torgeir; Ringen, Geir; Ma, Jun. (2020) An overview and evaluation of alternative forming processes for complex aluminium products. Procedia Manufacturing. volum 48.
    Academic article
  • Welo, Torgeir; Ringen, Geir; Rossi, Monica. (2020) Investigating Maturity of Lean Culture in Product Development Teams. Lecture Notes in Networks and Systems. volum 122.
    Academic article

2019

  • Barua, Deep; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2019) An experimental study on interference friction welding process. Procedia Manufacturing. volum 41.
    Academic article
  • Beste, Carina; Welo, Torgeir; Ringen, Geir. (2019) Newness and Outcomes in Commodity-Driven New-Product Development Projects: A Survey in the Norwegian Manufacturing Industry. Procedia CIRP. volum 84 (29).
    Academic article
  • Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. (2019) Studying design thinking as a forthcoming source to innovation speed. Proceedings of the International Conference on Engineering Design. volum 1 (1).
    Academic article
  • Schjøtt-Pedersen, Nikolai; Welo, Torgeir; Ringen, Geir; Raknes, Christian Arne. (2019) Using set-based design for developing a 3D metal forming process. Procedia CIRP. volum 84.
    Academic article
  • Welo, Torgeir; Lycke, Atle; Ringen, Geir. (2019) Investigating the use of set-based concurrent engineering in product manufacturing companies. Procedia CIRP. volum 84.
    Academic article

2018

  • Holtskog, Halvor; Carayannis, Elias G.; Kaloudis, Aris; Ringen, Geir. (2018) Learning Factories: The Nordic Model of Manufacturing. Palgrave Macmillan. 2018. ISBN 978-3-319-41887-2.
    Academic monograph
  • Holtskog, Halvor; Lied, Lars Harald; Ringen, Geir. (2018) Coping with technology: A future of robots?. Coping with the Future: Rethinking Assumptions for Society, Business and Work.
    Academic chapter/article/Conference paper
  • Holtskog, Halvor; Ringen, Geir. (2018) Social mechanisms of performance systems. European Journal of Workplace Innovation. volum 4 (1).
    Academic article
  • Ringen, Geir; Welo, Torgeir. (2018) The product development learning process and its relation to performance indicators. Procedia Manufacturing. volum 26.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2018) Investigating Organizational Knowledge Transformation Capabilities in Integrated Manufacturing and Product Development Companies. Procedia CIRP. volum 70.
    Academic article

2017

  • Ringen, Geir; Schulte, Kjersti Øverbø. (2017) Continuous vs step change production process improvement as enablers for product redesign and new market opportunities. IFIP Advances in Information and Communication Technology. volum 514.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2017) Lean assessment and transformation strategies in product development: A longitudinal study. Proceedings of the International Conference on Engineering Design. volum 2 (87-2).
    Academic article

2016

  • Holtskog, Halvor; Martinsen, Kristian; Skogsrød, Torbjørn; Ringen, Geir. (2016) The Pivoting Problem of Lean. Procedia CIRP. volum 41.
    Academic literature review
  • Lodgaard, Eirin Anita; Ringen, Geir; Larsson, Catrine Eleonor. (2016) Viewing the engineering change process from a lean product development and a business perspective. Journal of the Knowledge Economy. volum 9 (4).
    Academic article
  • Ringen, Geir; Welo, Torgeir; Østerbø, Emma. (2016) Learning and Knowledge Systems in Product Development Environments. Procedia CIRP. volum 57.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2016) Beyond Waste Elimination: Assessing Lean Practices in Product Development. Procedia CIRP. volum 50.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2016) Customer-focused development practices in Systems Engineering companies A case study across industry sectors. 2016 IEEE International Systems Conference (SysCon 2016) Proceedings.
    Academic chapter/article/Conference paper

2015

  • Ringen, Geir; Welo, Torgeir. (2015) Knowledge Based Development Practices in Systems Engineering Companies: A Comparative Study. 2015 9th Annual IEEE International Systems Conference (SysCon 2015).
    Academic chapter/article/Conference paper
  • Welo, Torgeir; Ringen, Geir. (2015) Investigating lean development practices in SE companies: A comparative study between sectors. Procedia Computer Science. volum 44.
    Academic article

2014

  • Aschehoug, Silje Helene; Schulte, Kjersti Øverbø; Ringen, Geir. (2014) Early Innovation Leadership. Proceedings of NordDesign 2014.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Netland, Torbjørn H.; Ringen, Geir. (2014) Step changes in mature production systems. 2014.
    Report
  • Ingvaldsen, Jonas A; Ringen, Geir. (2014) Første verktøyskuff: Standardisering. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Ringen, Geir. (2014) Tredje verktøyskuff: Visualisering. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Ringen, Geir; Rolfsen, Monica. (2014) Lean på global vandring. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Aschehoug, Silje Helene; Holtskog, Halvor; Ingvaldsen, Jonas A. (2014) Integrating Quality and Lean into a Holistic Production System. Procedia CIRP. volum 17.
    Academic article
  • Ringen, Geir; Lodgaard, Eirin Anita. (2014) Fjerde verktøyskuff: Kontinuerlig forbedring. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Rolfsen, Monica. (2014) Lean blir norsk. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Rolfsen, Monica. (2014) Lean kommune. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Welo, Torgeir. (2014) Stabilizing new-product development processes – a prerequisite or a barrier to satisfy customer wants and needs?. Procedia CIRP. volum 21.
    Academic article

2013

  • Holtskog, Halvor; Ringen, Geir. (2013) Opportunities in the Wake of Crisis. Procedia CIRP. volum 7.
    Academic article
  • Ingvaldsen, Jonas A; Holtskog, Halvor; Ringen, Geir. (2013) Unlocking work standards through systematic work observation: implications for team supervision. Team Performance Management. volum 19 (5/6).
    Academic article
  • Ringen, Geir; Holtskog, Halvor. (2013) How enablers for lean product development motivate engineers. International journal of computer integrated manufacturing (Print). volum 26 (12).
    Academic article
  • Welo, Torgeir; Aschehoug, Silje Helene; Ringen, Geir. (2013) Assessing the Relationship between New Product Development Practices and Performance in the Norwegian Manufacturing Industry. Proceedings of the 23rd CIRP Design Conference, Bochum, Germany, March 11th–13th, 2013.
    Academic chapter/article/Conference paper

2012

  • Aschehoug, Silje Helene; Boks, Casper; Ringen, Geir; Aasland, Knut Einar. (2012) Investigating the importance of sustainability information in Product Development and Design. Proceedings of The Ninth Norddesign Conference, 2012.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Henriksen, Ottar; Myklebust, Odd. (2012) Raufoss Technology Globalization Straegies and Implementation. Proceedings of IWAMA 2012 - The Second International Workshop of Advanced Manufacturing and Automation.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Holtskog, Halvor; Martinsen, Kristian. (2012) User Friendly Framework for Measuring Product and Process Novelty in the Early Stages of Product Development. Procedia CIRP. volum 3.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2012) NPD Practices in the Norwegian Manufacturing Industry: Assessing the Relationship between Key Dimensions and Performance. The 5th ISPIM Innovation Symposium - Stimulating Innovation: Challenges for Management, Science & Technology.
    Other

2011

  • Lodgaard, Eirin Anita; Pellegård, Øystein; Ringen, Geir; Klokkehaug, Jon Andreas. (2011) Failure Mode and Effects Analysis in Combination with the Problem-Solving A3. Proceedings of the 18th International Conference on Engineering Design (ICED11), 15-18 Aug 2011.
    Other

2009

  • Fleten, Stein-Erik; Ringen, Geir. (2009) New renewable electricity capacity under uncertainty: The potential in Norway. Journal of Energy Markets. volum 2 (1).
    Academic article

2008

  • Ringen, Geir; Sørby, Knut; Martinsen, Kristian. (2008) High-pressure coolant chip control in boring of aluminium alloys. Proceedings of the Eight International Conference on Advanced Manufacturing Systems and Technology.
    Academic chapter/article/Conference paper

2006

  • Fleten, Stein-Erik; Ringen, Geir. (2006) New Renewable Electricity Capacity under Uncertainty: The Potential in Norway. 9th International Conference on Probabilistic Methods Applies to Power Systems, PMAPS 2006.
    Academic chapter/article/Conference paper

Journal publications

  • Elkjær, Aksel Sean; Ringen, Geir; Bjørge, Ruben; Hagen, Catalina Hoem Musinoi; Lædre, Sigrid; Magnusson, Niklas. (2022) Reliability of Bolted Aluminum Busbars for Battery Systems: Effect of Nickel Coating and Corrosive Environment. IEEE Transactions on Transportation Electrification. volum 9 (1).
    Academic article
  • Elkjær, Aksel Sean; Sørhaug, Jørgen A; Ringen, Geir; Bjørge, Ruben; Grong, Øystein. (2022) Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process. Journal of Manufacturing Processes. volum 79.
    Academic article
  • Fragapane, Giuseppe; Schulte, Kjersti Øverbø; Eleftheriadis, Ragnhild; Reke, Eivind; Ringen, Geir. (2022) A Cross-disciplinary, cross-organizational approach to sustainable design and product innovation in the aluminum industry. Procedia CIRP. volum 107.
    Academic article
  • Kovalevskaya, Daria; Pedersen, Ann-Charlott; Holmen, Elsebeth; Kaloudis, Aris; Ringen, Geir. (2022) Triads in Lean Management: Analyzing Buyer–Supplier-Supplier and Buyer–Supplier-Supplier’s Supplier Relationships for Zero-Defect Manufacturing. Journal of the Knowledge Economy.
    Academic article
  • Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Ringen, Geir. (2022) On Dimensional Control in Rotary Stretch Bending of Aluminum Profiles: Loading-Path Effects. Manufacturing Letters. volum 33.
    Academic article
  • Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. (2022) Towards a shared vision in innovation projects: Understanding actor involvement as a preventative approach against defensive routines for innovation capability. Procedia CIRP. volum 107.
    Academic article
  • Ringen, Geir. (2022) Value Chain Data Integrity and Quality - A Case Study. INCOSE International Symposium. volum 32 (S2).
    Academic article
  • Ringen, Geir; Landsem, Kristin Lorentzen; Holtskog, Halvor. (2022) Design for Excellence to Explore Complex Product Service Systems: A Case Study. Procedia CIRP. volum 109.
    Academic article
  • Ringen, Geir; Welo, Torgeir; Breivik, Sissel Marie. (2022) Rapid Manufacturing of Die-casting Tools - a Case Study. Procedia CIRP. volum 107.
    Academic article
  • Shafqat, Ali; Oehmen, Josef; Welo, Torgeir; Ringen, Geir. (2022) The role of risk mitigation actions in engineering projects: An empirical investigation. Systems Engineering. volum 25 (6).
    Academic article
  • Ha, Taekwang; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2021) A strategy for on-machine springback measurement in rotary draw bending using digital image-based laser tracking. The International Journal of Advanced Manufacturing Technology. volum 119.
    Academic article
  • Hansen, Irina-Emily; Mork, Ola Jon; Welo, Torgeir; Ringen, Geir. (2021) Bridging the ‘Valley of Death’: Can Agile Principles Be Applied in Industry-Academia Research and Innovation Projects?. Journal of the Knowledge Economy.
    Academic article
  • Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) In-line Springback Measurement for Tube Bending Using a Laser System. Procedia Manufacturing. volum 47.
    Academic article
  • Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) A feasibility study of continuous grain refinement of sheet metal. Procedia Manufacturing. volum 48.
    Academic article
  • Holtskog, Halvor; Ringen, Geir. (2020) The insufficiency of lean tradition - Lean meets kodak moments. Procedia CIRP. volum 93.
    Academic article
  • Ma, Jun; Ha, Taekwang; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Li, Heng. (2020) Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending. Procedia Manufacturing. volum 47.
    Academic article
  • Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir. (2020) Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study. Procedia Manufacturing. volum 50.
    Academic article
  • Welo, Torgeir; Ringen, Geir; Ma, Jun. (2020) An overview and evaluation of alternative forming processes for complex aluminium products. Procedia Manufacturing. volum 48.
    Academic article
  • Welo, Torgeir; Ringen, Geir; Rossi, Monica. (2020) Investigating Maturity of Lean Culture in Product Development Teams. Lecture Notes in Networks and Systems. volum 122.
    Academic article
  • Barua, Deep; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2019) An experimental study on interference friction welding process. Procedia Manufacturing. volum 41.
    Academic article
  • Beste, Carina; Welo, Torgeir; Ringen, Geir. (2019) Newness and Outcomes in Commodity-Driven New-Product Development Projects: A Survey in the Norwegian Manufacturing Industry. Procedia CIRP. volum 84 (29).
    Academic article
  • Mitcheltree, Christina Marie; Holtskog, Halvor; Ringen, Geir. (2019) Studying design thinking as a forthcoming source to innovation speed. Proceedings of the International Conference on Engineering Design. volum 1 (1).
    Academic article
  • Schjøtt-Pedersen, Nikolai; Welo, Torgeir; Ringen, Geir; Raknes, Christian Arne. (2019) Using set-based design for developing a 3D metal forming process. Procedia CIRP. volum 84.
    Academic article
  • Welo, Torgeir; Lycke, Atle; Ringen, Geir. (2019) Investigating the use of set-based concurrent engineering in product manufacturing companies. Procedia CIRP. volum 84.
    Academic article
  • Holtskog, Halvor; Ringen, Geir. (2018) Social mechanisms of performance systems. European Journal of Workplace Innovation. volum 4 (1).
    Academic article
  • Ringen, Geir; Welo, Torgeir. (2018) The product development learning process and its relation to performance indicators. Procedia Manufacturing. volum 26.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2018) Investigating Organizational Knowledge Transformation Capabilities in Integrated Manufacturing and Product Development Companies. Procedia CIRP. volum 70.
    Academic article
  • Ringen, Geir; Schulte, Kjersti Øverbø. (2017) Continuous vs step change production process improvement as enablers for product redesign and new market opportunities. IFIP Advances in Information and Communication Technology. volum 514.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2017) Lean assessment and transformation strategies in product development: A longitudinal study. Proceedings of the International Conference on Engineering Design. volum 2 (87-2).
    Academic article
  • Holtskog, Halvor; Martinsen, Kristian; Skogsrød, Torbjørn; Ringen, Geir. (2016) The Pivoting Problem of Lean. Procedia CIRP. volum 41.
    Academic literature review
  • Lodgaard, Eirin Anita; Ringen, Geir; Larsson, Catrine Eleonor. (2016) Viewing the engineering change process from a lean product development and a business perspective. Journal of the Knowledge Economy. volum 9 (4).
    Academic article
  • Ringen, Geir; Welo, Torgeir; Østerbø, Emma. (2016) Learning and Knowledge Systems in Product Development Environments. Procedia CIRP. volum 57.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2016) Beyond Waste Elimination: Assessing Lean Practices in Product Development. Procedia CIRP. volum 50.
    Academic article
  • Welo, Torgeir; Ringen, Geir. (2015) Investigating lean development practices in SE companies: A comparative study between sectors. Procedia Computer Science. volum 44.
    Academic article
  • Ringen, Geir; Aschehoug, Silje Helene; Holtskog, Halvor; Ingvaldsen, Jonas A. (2014) Integrating Quality and Lean into a Holistic Production System. Procedia CIRP. volum 17.
    Academic article
  • Ringen, Geir; Welo, Torgeir. (2014) Stabilizing new-product development processes – a prerequisite or a barrier to satisfy customer wants and needs?. Procedia CIRP. volum 21.
    Academic article
  • Holtskog, Halvor; Ringen, Geir. (2013) Opportunities in the Wake of Crisis. Procedia CIRP. volum 7.
    Academic article
  • Ingvaldsen, Jonas A; Holtskog, Halvor; Ringen, Geir. (2013) Unlocking work standards through systematic work observation: implications for team supervision. Team Performance Management. volum 19 (5/6).
    Academic article
  • Ringen, Geir; Holtskog, Halvor. (2013) How enablers for lean product development motivate engineers. International journal of computer integrated manufacturing (Print). volum 26 (12).
    Academic article
  • Ringen, Geir; Holtskog, Halvor; Martinsen, Kristian. (2012) User Friendly Framework for Measuring Product and Process Novelty in the Early Stages of Product Development. Procedia CIRP. volum 3.
    Academic article
  • Fleten, Stein-Erik; Ringen, Geir. (2009) New renewable electricity capacity under uncertainty: The potential in Norway. Journal of Energy Markets. volum 2 (1).
    Academic article

Books

  • Holtskog, Halvor; Carayannis, Elias G.; Kaloudis, Aris; Ringen, Geir. (2018) Learning Factories: The Nordic Model of Manufacturing. Palgrave Macmillan. 2018. ISBN 978-3-319-41887-2.
    Academic monograph

Part of book/report

  • Ringen, Geir; Welo, Torgeir. (2021) Material substitution innovation - trajectories towards circular economy. Proceedings on the 2021 ISPIM innovation conference : Innovating our common future.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Holtskog, Halvor; Welo, Torgeir. (2020) A Novel Value Driven Co-creation Framework. 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.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Pålsrud, Frode Gulbrandsen; Lodgaard, Eirin Anita. (2020) Interorganizational Learning in Manufacturing Networks. 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.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Welo, Torgeir. (2020) Material substitution innovation - trajectories towards circular economy. Proceedings of the 2020 ISPIM Innovation Conference (Virtual) Event : Innovating in Times of Crisis.
    Academic chapter/article/Conference paper
  • Holtskog, Halvor; Lied, Lars Harald; Ringen, Geir. (2018) Coping with technology: A future of robots?. Coping with the Future: Rethinking Assumptions for Society, Business and Work.
    Academic chapter/article/Conference paper
  • Welo, Torgeir; Ringen, Geir. (2016) Customer-focused development practices in Systems Engineering companies A case study across industry sectors. 2016 IEEE International Systems Conference (SysCon 2016) Proceedings.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Welo, Torgeir. (2015) Knowledge Based Development Practices in Systems Engineering Companies: A Comparative Study. 2015 9th Annual IEEE International Systems Conference (SysCon 2015).
    Academic chapter/article/Conference paper
  • Aschehoug, Silje Helene; Schulte, Kjersti Øverbø; Ringen, Geir. (2014) Early Innovation Leadership. Proceedings of NordDesign 2014.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Ringen, Geir. (2014) Første verktøyskuff: Standardisering. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Ringen, Geir. (2014) Tredje verktøyskuff: Visualisering. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ingvaldsen, Jonas A; Ringen, Geir; Rolfsen, Monica. (2014) Lean på global vandring. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Lodgaard, Eirin Anita. (2014) Fjerde verktøyskuff: Kontinuerlig forbedring. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Rolfsen, Monica. (2014) Lean blir norsk. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Rolfsen, Monica. (2014) Lean kommune. Lean blir norsk : Lean i den norske samarbeidsmodellen.
    Academic chapter/article/Conference paper
  • Welo, Torgeir; Aschehoug, Silje Helene; Ringen, Geir. (2013) Assessing the Relationship between New Product Development Practices and Performance in the Norwegian Manufacturing Industry. Proceedings of the 23rd CIRP Design Conference, Bochum, Germany, March 11th–13th, 2013.
    Academic chapter/article/Conference paper
  • Aschehoug, Silje Helene; Boks, Casper; Ringen, Geir; Aasland, Knut Einar. (2012) Investigating the importance of sustainability information in Product Development and Design. Proceedings of The Ninth Norddesign Conference, 2012.
    Academic chapter/article/Conference paper
  • Ringen, Geir; Henriksen, Ottar; Myklebust, Odd. (2012) Raufoss Technology Globalization Straegies and Implementation. Proceedings of IWAMA 2012 - The Second International Workshop of Advanced Manufacturing and Automation.
    Academic chapter/article/Conference paper
  • Welo, Torgeir; Ringen, Geir. (2012) NPD Practices in the Norwegian Manufacturing Industry: Assessing the Relationship between Key Dimensions and Performance. The 5th ISPIM Innovation Symposium - Stimulating Innovation: Challenges for Management, Science & Technology.
    Other
  • Lodgaard, Eirin Anita; Pellegård, Øystein; Ringen, Geir; Klokkehaug, Jon Andreas. (2011) Failure Mode and Effects Analysis in Combination with the Problem-Solving A3. Proceedings of the 18th International Conference on Engineering Design (ICED11), 15-18 Aug 2011.
    Other
  • Ringen, Geir; Sørby, Knut; Martinsen, Kristian. (2008) High-pressure coolant chip control in boring of aluminium alloys. Proceedings of the Eight International Conference on Advanced Manufacturing Systems and Technology.
    Academic chapter/article/Conference paper
  • Fleten, Stein-Erik; Ringen, Geir. (2006) New Renewable Electricity Capacity under Uncertainty: The Potential in Norway. 9th International Conference on Probabilistic Methods Applies to Power Systems, PMAPS 2006.
    Academic chapter/article/Conference paper

Report

  • Ingvaldsen, Jonas A; Netland, Torbjørn H.; Ringen, Geir. (2014) Step changes in mature production systems. 2014.
    Report

Teaching

Courses

  • TØL4015 - Project work
  • TØL4007 - Product Development
  • TMM4960 - Engineering Design and Materials, Master's Thesis
  • IØ6571 - Introduction to Future Digital Organizations
  • TMM4540 - Industrial ICT Engineering Design and Materials, Specialization Project
  • TMM4560 - Engineering Design and Materials, Specialization Project
  • TMM4285 - Lifecycle Performance of Aluminum Products
  • TMM4280 - Advanced Product Development
  • TMM4935 - Industrial ICT, Master's Thesis
  • TMM4182 - Fundamentals of Metal Forming and Sustainable Manufacturing Processes
  • IDS4100 - Master thesis

Media

2022

  • Academic lecture
    Ringen, Geir; Welo, Torgeir. (2022) Framework for Predicting Dimensional Accuracy of 3D-Formed Aluminum Profiles – Based on Industry 4.0 Principles. ET22 - Aluminum Extruders Council . AEC; 2022-05-03 - 2022-05-05.

2021

  • Academic lecture
    Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2021) A computer vision-based, in-situ springback monitoring technique for bending of large profiles. 24th International Conference on Material Forming . Liege Univeristy; Liege. 2021-04-14 - 2021-04-16.
  • Academic lecture
    Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Ringen, Geir. (2021) On Dimensional Control in Rotary Stretch Bending of Aluminum Profiles: Loading-Path Effects. 50th SME North American Manufacturing Research Conference (NAMRC 50, 2022) . Purdue University; West Lafayette. 2021-06-27 - 2021-07-01.
  • Academic lecture
    Ma, Jun; Welo, Torgeir; Ringen, Geir. (2021) Efficient Prediction of Real-Time Forming Forces in Flexible Stretch Bending. 24th International Conference on Material Forming . Liege Univeristy; Liege. 2021-04-14 - 2021-04-16.
  • Academic lecture
    Ringen, Geir; Welo, Torgeir. (2021) Material substitution innovation - trajectories towards circular economy. XXXII ISPIM Innovation Conference - Innovating Our Common Future . ISPIM; Berlin. 2021-06-20 - 2021-06-23.

2020

  • Academic lecture
    Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) In-line Springback Measurement for Tube Bending Using a Laser System. 23rd International Conference on Material Forming . European Scientific Association for Materials Forming; 2020-05-04 - 2020-05-08.
  • Academic lecture
    Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen. (2020) A feasibility study of continuous grain refinement of sheet metal. 48th SME North American Manufacturing Research Conference . SME; 2020-06-22 - 2020-06-26.
  • Academic lecture
    Ma, Jun; Ha, Taekwang; Welo, Torgeir; Blindheim, Jørgen; Ringen, Geir. (2020) Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending. 23rd International Conference on Material Forming . European Scientific Association for Materials Forming; 2020-05-04 - 2020-05-08.
  • Academic lecture
    Ringen, Geir; Lodgaard, Eirin Anita. (2020) Interorganizational Learning in Manufacturing Networks. APMS 2020 . APMS; Novi Sad. 2020-08-30 - 2020-09-03.
  • Academic lecture
    Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir. (2020) Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study. 18th International Conference on Metal Forming . AGH University of Science and Technology; 2020-09-13 - 2020-09-16.

2018

  • Academic lecture
    Holtskog, Halvor; Ringen, Geir; Ennals, Richard. (2018) The insufficiency of Lean thinking and how to build an alternative powerful and persuasive thinking. Coping with the Future - conference . UiA and NTNU; Kristiansand. 2018-10-08 - 2018-10-10.
  • Academic lecture
    Huang, Lizhen; Martinsen, Kristian; Holtskog, Halvor; Ringen, Geir. (2018) Data driven recycling: products as plastic bank. Coping with the future . Univerisity i Agder; Kristansand. 2018-10-08 - 2018-10-10.

2014

  • Academic lecture
    Aschehoug, Silje Helene; Schulte, Kjersti Øverbø; Ringen, Geir. (2014) Early Innovation Leadership. NordDesign 2014 . The Design Society 2014; Espoo. 2014-08-27 - 2014-08-29.

2013

  • Academic lecture
    Aschehoug, Silje Helene; Ringen, Geir. (2013) Open Innovation and Idea Generation in SMEs. ICED 13 . The Design Society; Seoul. 2013-08-19 - 2013-08-22.
  • Academic lecture
    Ingvaldsen, Jonas A; Holtskog, Halvor; Ringen, Geir. (2013) The Ambivalence of Super­visors in Industry Revisited: Bosses or Primus Inter Pares?. INTERNATIONAL WORKSHOP ON TEAMWORKING 17 . IWOT; Leiden. 2013-09-12 - 2013-09-13.
  • Academic lecture
    Welo, Torgeir; Ringen, Geir. (2013) Implementing an Event-Driven NPD Process: A Case Study of Absorptive Capacity of the Concept within Project Teams. ICED 13 . The Design Society; Seoul. 2013-08-19 - 2013-08-22.

2012

  • Popular scientific lecture
    Aschehoug, Silje Helene; Ringen, Geir; Schulte, Kjersti Øverbø. (2012) Lean produktutvikling i Tine. Miniseminar . Tine FoU; Oslo. 2012-11-23 - 2012-11-23.
  • Academic lecture
    Welo, Torgeir; Ringen, Geir. (2012) NPD Practices in the Norwegian Manufacturing Industry: Assessing the Relationship between Key Dimensions and Performance. 5th ISPIM Innovation Symposium - Stimulating Innovation: Challenges for Management, Science & Technology . The International Society for Professional Innovation Manage; Seoul. 2012-12-09 - 2012-12-12.

2011

  • Academic lecture
    Lodgaard, Eirin Anita; Pellegård, Øystein; Ringen, Geir; Klokkehaug, Jon Andreas. (2011) Failure Mode and Effects Analysis in Combination with the Problem-Solving A3. International Conference on Engineering Design, ICED11 ; København. 2011-08-15 - 2011-08-18.

2009

  • Academic lecture
    Ringen, Geir; Lodgaard, Eirin Anita; Langeland, Camilla. (2009) Continuous Improvement in a Product Development Environment. 2nd Nordic Conference on Product Lifecycle Management . Chalmers University of Technology; Gøteborg. 2009-01-28 - 2009-01-29.
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