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