Projects per year
Personal profile
Teaching
Manufacturing Technology
Material Characterisation
Mathematics
Curriculum
12/2020 - 09/2025 chief engineer Manufacturing Technology
05/2019 - 12/2025 scientific assistant at the Institute for Production Technology and Systems (IPTS), Leuphana University Lüneburg
04/2019 Master of Science "Product Development, Materials and Production", Hamburg University of Technology (TUHH)
08/2017-01/2018 Study visit to Linköping University, Sweden
12/2016 DVS-IIW/EWF International Welding Engineer
07/2016 Bachelor of Science "Mechanical Engineering", Technical University Hamburg (TUHH)
Education/Academic qualification
Product Development, Materials and Production, Hamburg University of Technology
Award Date: 24.04.2019
Mechanical Engineering, Hamburg University of Technology
Award Date: 12.07.2016
Keywords
- Engineering
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 9 Industry, Innovation, and Infrastructure
Fingerprint
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Research collaborations from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Projects
- 5 Finished
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Functionally Graded Materials: Continuous Casting and Forming of Electric Copper Conductors
Ben Khalifa, N. (Project manager, academic), Volk, W. (Project manager, academic), Lehmann, J. (Project staff) & Thiery, S. (Project staff)
01.06.23 → 31.05.25
Project: Research
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OptUm-MagNa: Optimierte Umformbarkeit von Magnesium-Nanokompositen – Teilvorhaben Umformtheorie (Bundesministerium für Wirtschaft und Klimaschutz)
Ben Khalifa, N. (Project manager, academic), Lehmann, J. (Project staff) & Kruse, M. (Project staff)
Federal Ministry for Economic Affairs and Energy
01.02.22 → 31.12.24
Project: Research
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FerNaPro: Fertigungstechnik für innovative und nachhaltige Produkte
Ben Khalifa, N. (Project manager, academic) & Lehmann, J. (Project staff)
15.07.21 → 30.09.23
Project: Research
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10 MN Extrusion Press
Ben Khalifa, N. (Project manager, academic) & Lehmann, J. (Project staff)
01.04.21 → 01.03.25
Project: Research
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Reduction of anisotropic material properties during extrusion through additively manufactured extrusion dies
Ben Khalifa, N. (Project manager, academic), Bohlen, J. (Project manager, academic), Lehmann, J. (Project staff) & Esterl, F. (Project staff)
01.02.21 → 31.03.26
Project: Research
Research output
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Increased Robustness of Residual Stress Measurements Using Two-Axis ESPI Hole-Drilling
Lehmann, J., Scheer, J. & Schajer, G. S., 19.05.2026, (E-pub ahead of print) In: Experimental Mechanics. 7 p.Research output: Journal contributions › Journal articles › Research › peer-review
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Analysis of tailored residual stress fields of deep rolled AA2024 sheets
Lehmann, J., Pöltl, D., Esterl, F., Kashaev, N. & Ben Khalifa, N., 09.2025, In: International Journal of Material Forming. 18, 3, 12 p., 66.Research output: Journal contributions › Journal articles › Research › peer-review
Open Access1 Citation (Scopus) -
Deep Rolling for Tailoring Residual Stresses of AA2024 Sheet Metals
Lehmann, J., Keller, S., Esterl, F., Kashaev, N., Klusemann, B. & Ben Khalifa, N., 2024, Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity: ICTP 2023 - Volume 3. Mocellin, K., Bouchard, P.-O., Bigot, R. & Balan, T. (eds.). Cham: Springer International Publishing, Vol. 3. p. 352-362 11 p. (Lecture Notes in Mechanical Engineering).Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
3 Citations (Scopus) -
EFFECT OF DIFFERENT RESIDUAL STRESS ENGINEERING TECHNIQUES ON THE RESIDUAL STRESS AND FATIGUE CRACK GROWTH BEHAVIOUR IN AA7075
Lehmann, J., Ventzke, V., Dorn, F., Knothe-Horstmann, C., Klusemann, B., Kashaev, N. & Ben Khalifa, N., 2024, European Conference on Fracture 2024: Book of Abstracts. Bozic, Z., Domazet, Z., Basan, R., Vrdoljak, M. & Andric, M. (eds.). Zagreb: University of Zagreb, p. 410-410 1 p.Research output: Contributions to collected editions/works › Published abstract in conference proceedings › Research
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Flow Behavior Investigation during Miniaturized Extrusion of Aluminum (AA6082) and Magnesium (AZ31)
Nienaber, M., Esterl, F., Lehmann, J., Bohlen, J. & Ben Khalifa, N., 2024, Partnership by Design: Alumium Extrusion & Sustainability: Proceedings of Thirteenth International Aluminum Extrusion Technology Seminar (ET'24). Extrusion Technology for Aluminum Profiles Foundation, Vol. 1. p. 1-7 7 p. RD469Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
Activities
- 1 Conference Presentations
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EFFECT OF DIFFERENT RESIDUAL STRESS ENGINEERING TECHNIQUES ON THE RESIDUAL STRESS AND FATIGUE CRACK GROWTH BEHAVIOUR IN AA7075
Lehmann, J. (Speaker)
29.08.2024Activity: Talk or presentation › Conference Presentations › Research