Beschreibung
In the manufacturing of massive high performance components demands such as lightweight
and increasing functional integration become more important. Through the use of different material,
for example high-strength steel or aluminum, hybrid massive components, whose properties are specially
adapted to the respective application can be manufactured. One of the challenges is to measure induced
residual stress gradients in the joining zone, which directly influence the cohesion of the material compound.
The residual stresses are specifically influenced by machining, for example turning, milling or grinding [1].
To investigate the residual stresses before and after machining and analyze the influence of these residual
stress gradients on the service life of the composite, a non-destructive method of measuring depth-resolved
residual stress is necessary. But the current standard sin²-method with angular dispersive residual stress
measurement does not allow a non-destructive depth-resolved residual stress measurement. Therefore the
sin²-method is used with an innovative energy dispersive measurement technique in the collaborative research
center 1153 (CRC 1153). Energy dispersive residual stress measurements allow the non-destructive
and depth-resolved measurement of residual stresses in the hybrid transition zone with lesser workload and,
consequently, lower costs compared to angle dispersive measurment technique. However, this measurement
method has not yet been explored in terms of ensuring high quality and reproducible results. Therefore, the
accuracy and reproducibility of energy dispersive measurement method is examined by comparing with
qualified measuring methodologies such as angle dispersive residual stress measurement methodology.
