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Load optimisation applied to air bending is used to optimise the damage state in the formed component. In [1], elastomer bending is presented, where superposed stresses due to the reaction forces of the elastomer cushion lead to reduced damage growth. Replacing the elastomer cushion with compressive loads allows for optimisation of these loads such that the damage, estimated with the stress triaxiality,...
Radial stress superposed bending is a sheet metal bending process, which superposes predetermined radial stresses. Stress superposition is mandatory to enable the reduction of the triaxiality in bending, resulting in delayed damage evolution and an improved product performance. The knowledge of the stress state is essential for damage-controlled bending as the triaxiality is the driving force for...
Damage is caused in the microstructure of metals during forming. Damage is not a failure, but affects the mechanical properties of the component under service loads. This paper explores experimentally the effect of metal forming process parameters on the evolution of damage and the resulting product properties. As a representative for bulk forming processes, cold forging is investigated. It is shown...
A deficient access to experimental equipment leads to the usage of remote labs to improve engineering education and open experiments for every student location — and time — independent. The usage of a tele-operative controlled industrial bending process in lecture combines theoretical learning contents with practical experiences. Lecturers can make experiments in interaction with the students, who...
A remote controlled cupping test for sheet metal as material characterization for forming technology is presented. This formability test is included in a tele-operative testing cell consisting of an additional testing machine, an industrial robot, and other necessary components for the automation and execution of experiments. First, a methodology is introduced explaining how the remote cupping test...
In engineering courses, it is more and more important to combine theory with practice. Therefore, at the Institute of Forming Technology and Lightweight Construction of TU Dortmund University a tele-operative testing cell for material characterization was developed. This remote lab was successfully integrated to different scenarios. On the one hand, the remote lab was integrated to forming technology...
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