Professorship for materials mechanics

Organisational unit: Professoship

Organisation profile

The professorship for materials mechanics with a focus on process simulation is a shared professorship carried out in cooperation with the Helmholtz-Zentrum hereon GmbH. In particular, this is concerned with the digital modelling of technological production processes and materials, whereby considerable focus is placed on local modification processes, solid state joining processes and forming processes. The modelling approaches which are used for these range from micromechanics (e.g. crystal plasticity and phase field simulations), to continuum mechanics for describing material behaviour, to approaches for complex process simulations.

Main research areas

At the same time, one of the main focuses of the activities carried out by the professorship at the Leuphana is the development and application of mathematical models (material models) for describing microstructure development and the deformation behaviour of various metallic materials across multiple length scales. These developments often take place in close conjunction with the experimental work being carried out at the hereon. The length scale and timescale on which the relevant processes in the material take place or on which these are modelled depends on the material, the process and the component. Over the past few years, the work group has built up a vast wealth of experience when it comes to modelling many material systems such as these. In addition to carrying out intense studies on deformation processes in metallic materials, the work group has also dealt with additional material systems such as metallic glasses and polymers.

At the Helmholtz-Zentrum hereon, the professorship deals specifically with the experimental study and process modelling of solid state joining processes and manufacturing processes which act on a local level. Some named examples of these are joining processes such as friction stir welding and laser welding, as well as additive manufacturing processes such as friction welding and laser deposition welding. This is accompanied by local modification processes for the targeted adjustment of residual stresses (residual stress engineering), such as laser shock peening and hammer peening. One of the fundamental goals of these research activities is to investigate the entire system of process, microstructure and property through a combination of experimental and simulation-based approaches in order to achieve an improved physical understanding thereof. By adapting the process parameters in a targeted manner, the insights gained can be used to optimise material or structural behaviour, e.g. with regard to deformation and failure behaviour.

The professorship plays an active role in various national and international organisations such as the GAMM (International Association of Applied Mathematics and Mechanics) or the ZHM (Centre for Advanced Materials).

Key teaching focuses are in the fields of applied mechanics and material modelling, as well as in the provision of additional engineering basics.

  1. 2023
  2. Published

    Refill friction stir spot welding of thermoplastic composites: Case study on Carbon-fiber-reinforced polyphenylene sulfide

    Schäfer, H., Blaga, L. A., Stöver, E. & Klusemann, B., 01.10.2023, In: Thin-Walled Structures. 191, 111037.

    Research output: Journal contributionsJournal articlesResearch

  3. Published

    Correlation of Microstructure and Local Mechanical Properties Along Build Direction for Multi-layer Friction Surfacing of Aluminum Alloys

    Kallien, Z., Hoffmann, M., Roos, A. & Klusemann, B., 10.2023, In: JOM: Journal of The Minerals, Metals & Materials Society. 75, 10, p. 4212-4222 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  4. Published

    Microstructural development of as-cast AM50 during Constrained Friction Processing: grain refinement and influence of process parameters

    de Castro, C. C., Shen, J., dos Santos, J. F. & Klusemann, B., 01.09.2023, In: Journal of Materials Processing Technology. 318, 11 p., 118018.

    Research output: Journal contributionsJournal articlesResearch

  5. Published

    Rapid grain refinement and compositional homogenization in a cast binary Cu50Ni alloy achieved by friction stir processing

    Escobar, J., Gwalani, B., Silverstein, J., Ajantiwalay, T., Roach, C., Bergmann, L., dos Santos, J. F., Maawad, E., Klusemann, B. & Devaraj, A., 01.08.2023, In: Materials Characterization. 202, 10 p., 112999.

    Research output: Journal contributionsJournal articlesResearch

  6. Published

    Semi-stationary shoulder bobbin-tool: A new approach in tailoring macrostructure and mechanical properties of bobbin-tool friction stir welds in magnesium alloy

    Li, G., Chen, T., Fu, B., Shen, J., Bergmann, L., Zhou, L., Chen, K., Santos, J. F. D. & Klusemann, B., 01.08.2023, In: Journal of Materials Processing Technology. 317, 117984.

    Research output: Journal contributionsJournal articlesResearch

  7. Published

    Fatigue behaviour of multi-spot joints of 2024-T3 aluminium sheets obtained by refill Friction Stir Spot Welding with polysulfide sealant

    Bernardi, M., Suhuddin, U. F. H., Fu, B., Gerber, J. P., Bianchi, M., Ostrovsky, I., Sievers, B., Faes, K., Maawad, E., Lazzeri, L., dos Santos, J. F. & Klusemann, B., 01.07.2023, In: International Journal of Fatigue. 172, 107539.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  8. Published

    Fatigue crack propagation in AA5083 structures additively manufactured via multi-layer friction surfacing

    Kallien, Z., Knothe-Horstmann, C. & Klusemann, B., 01.07.2023, In: Additive Manufacturing Letters. 6, 7 p., 100154.

    Research output: Journal contributionsComments / Debate / ReportsResearch

  9. Published

    Quasi-in-situ observation of microstructure at the friction interface: Shear deformation, dynamic recrystallization and mechanical responses during friction welding process

    Jin, F., Fu, B., Shen, J., Li, J., Li, W., Santos, J. F. D. & Klusemann, B., 01.06.2023, In: Materials Characterization. 200, 112911.

    Research output: Journal contributionsJournal articlesResearch

  10. Published

    Friction Riveting of FR4 substrates for printed circuit boards: Influence of process parameters on process temperature development and joint properties

    Rodrigues, C. F., Blaga, L. & Klusemann, B., 01.05.2023, In: Journal of Materials Research and Technology. 24, p. 4639-4649 11 p.

    Research output: Journal contributionsJournal articlesResearch

  11. Published

    On anisotropic tensile mechanical behavior of Al-Cu-Li AA2198 alloy under different ageing conditions

    Examilioti, T. N., Li, W., Kashaev, N., Ventzke, V., Klusemann, B., Tiryakioğlu, M. & Alexopoulos, N. D., 01.05.2023, In: Journal of Materials Research and Technology. 24, p. 895-908 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

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