STRENGTH OF FRICTION WELDED CERAMIC-METAL JOINTS

In preceding theoretical examinations, the friction welding process of ceramics to metals was investigated by the finite element method and statistical fracture mechanics. The influence of residual stresses on the resulting joint strength was of special interest. It was found tha t, besides material combination, interface geometry does strongly infl uence the residual stress distributions and therefore has a strong inf luence on joint strength. In the framework of this examination, these theoretical findings have been experimentally verified. Furthermore, t he influence of surface preparation and welding parameters have been e xamined.