Residual stress analyses

© Photo Fraunhofer IWM

A component’s operational behavior is often strongly dependent on the residual stress state in areas close to the surface, as this is where corrosion, wear and mechanical and thermal stresses are usually the greatest. We use non-destructive x-ray diffraction techniques or partially destructive techniques such as the hole-drilling method to determine residual stresses. A combination of both makes it possible to economically and conclusively assess a component’s boundary layers, even for large components, either on site or with high spatial resolution in a laboratory. The techniques are constantly being refined and complemented by new developments.

Schweizer, F.; Dickele, M.; Luke, M; Application of the incremental hole-drilling method for the determination of residual stresses in glass-fiber reinforced composites; Advanced Materials Research 996 (2014) 262-268; 1282/2014

Pfeiffer, W.; Wenzel, J.; Shot peening of brittle materials – Status and outlook, Material Science Forum 638-642 (2010) 799-804; Full Text

Pfeiffer, W.; Characterization of shot peened components by X-ray diffraction: a method on its way from the laboratory into industrial product development; in Proc. of the 9th international Conference on shot peening. Technology Transfer Series, IITT-International, France (2005) 414-419, ISBN 2-907669-37-0

Pfeiffer, W.; Residual Stresses in bulk ceramics, Handbook on Residual Stress 1; Lu,K. (Ed.) Society for Experimental Mechanics, Bethel, CT , USA (2005) 274-285, Link

Hackemann, S.; Pfeiffer, W.; Domain switching in process zones of PZT: Characterization by microfiffraction and fracture mechanical methods; Journal European Ceramics Society 23 (2003) 141-151