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Faculty of Mechanical Engineering
TRR 188/B01

Damage interaction on macrostructural scale

The CRC/Transregio 188 Damage Controlled Forming Processes is a joint long-term research project with participation of RWTH Aachen, BTU Cottbus-Senftenberg, TU Dortmund University and the Max-Planck-Institut für Eisenforschung. The overall objective is to investigate damage nucleation and evolution in hot and cold forming on multi-process and multi-scale level by merging of competences in the areas of forming technology (A-projects), materials science (B-projects) and mechanical material modeling (C-projects). Strategies are developed to permanently improve the performance of components produced by shaping technology by adjustment of damage profiles through optimization of load paths.

Duration: 2017 until 2024

Consortium: 3 universities, 1 research institute

Subproject: B01 Measurement of interaction of ductile and cyclic damage mechanisms at macroscopic level

The purpose of the project is the development and validation of a short-time testing method based on instrumented uniaxial cyclic deformation tests of 16MnCrS5 and DP800 specimens, in order to evaluate the impact of ductile damage on the operating performance and fatigue life of cold- and hot-worked material. Due to the measurement of damage evolution on macroscopic scale, a fundamental insight into the interaction of single forming processes and load paths with regard to achievable material and component performance will be generated. The methods developed are utilized by the consortium for process analysis and calibration of newly developed material models in order to achieve the proposed advance in design and manufacturing of high-performance forming parts.