Method for testing the strength of heterogeneous mechanical joints especially glue or solder seams by use of focussed shock waves, which are easier to use than existing mechanical methods

摘要

Method in which glued or soldered areas on a test-piece are subjected to focussed shock waves that are delivered to the test areas via sound conducting media. The shock waves are generated in thermo-hydraulic manner and have amplitudes of at least 10 MPa and diameters of less than 4 mm, ideally 2 mm. The shock waves are transmitted through oil, water or alcohol. The invention also relates to a device for generation and focussing of shock waves for use in testing the strength of heterogeneous joint seams.