Jun Ma

Associate Professor

Department of Mechanical and Industrial Engineering Faculty of Engineering

jun.ma@ntnu.no +47 92238152 +47 93996542

Verkstedteknisk, P315, Gløshaugen

Jun Ma is an Associate Professor at NTNU – Department of Mechanical and Industrial Engineering. He joined NTNU as a postdoctoral fellow in Sept 2019 and was promoted to a faculty member in Sept 2021. Before he joined NTNU, Jun studied at Northwestern Polytechnical University, China, The Hong Kong Polytechnic University, and University of Erlangen-Nuremberg, Germany, and received his PhD in mechanical engineering. Jun's research endeavour is more on exploring advanced manufacturing processes, in particular flexible forming of lightweight and sustainable products, seeking the epistemological understanding of the physical essence in the entire production chain as well as developing Industry 4.0-based control strategies towards an improvement in dimensional accuracy and mechanical properties of products, productivity, and sustainability.

Professional Experiences

Associate Professor, NTNU - Department of Mechanical and Industrial Engineering, Trondheim, Norway, 09/2021 - present
Postdoctoral Fellow, NTNU - Department of Mechanical and Industrial Engineering, Trondheim, Norway, 09/2019 - 09/2021
Research Assistant, Hong Kong PolyU - Department of Mechanical Engineering, Hong Kong, China, 05/2018 - 05/2019

Research Interests

Design and development of value-added, sustainable products.
Advanced manufacturing processes: metal forming, flexible and hybrid manufacturing, ...
Model-based adaptive control of manufacturing processes and chains.
Sustainable manufacturing, remanufacturing of aluminium products.

Courses

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

2022

Wan, Di; Guan, Shuai; Wang, Dong; Lu, Xu; Ma, Jun. (2022) Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy. Corrosion Science. vol. 195.

2021

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.
Ma, Jun; Li, H; Chen, GY; Welo, Torgeir; Li, GJ. (2021) Machine Learning (ML)-Based Prediction and Compensation of Springback for Tube Bending. Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity.
Ma, Jun; Welo, Torgeir. (2021) Analytical springback assessment in flexible stretch bending of complex shapes. International journal of machine tools & manufacture. vol. 160.
Ma, Jun; Welo, Torgeir; Blindheim, Jørgen; Ha, Taekwang. (2021) Effect of Stretching on Springback in Rotary Stretch Bending of Aluminium Alloy Profiles. Key Engineering Materials. vol. 883.
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.
Ma, Jun; Welo, Torgeir; Wan, Di. (2021) The impact of thermo-mechanical processing routes on product quality in integrated aluminium tube bending process. Journal of Manufacturing Processes. vol. 67.
Zhou, Xianyan; Welo, Torgeir; Ma, Jun; Tronvoll, Sigmund A.. (2021) Deformation characteristics in a stretch-based dimensional correction method for open, thin-walled extrusions. Metals. vol. 11 (11).

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. 23rd International Conference on Material Forming . European Scientific Association for Materials Forming; 2020-05-04 - 2020-05-08.
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. vol. 47.
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. vol. 47.
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.
Raknes, Christian Arne; Ma, Jun; Welo, Torgeir; Paulsen, Frode. (2020) A new mechanical calibration strategy for U-channel extrusions. The International Journal of Advanced Manufacturing Technology. vol. 110.
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.
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. vol. 50.
Welo, Torgeir; Ringen, Geir; Ma, Jun. (2020) An overview and evaluation of alternative forming processes for complex aluminium products. Procedia Manufacturing. vol. 48.

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