A method for non-destructive testing of a joint, such as a resistor point welding compounds and material defects such as cracks in components by means of induction - thermography and arrangement for carrying out the method

摘要

A method for non-destructive testing of joint connections, such as a resistor point welding compounds and material defects such as cracks (13) in components (8) by means of induction - thermography, wherein the thermoplastic excitation of a component (8) by means of an inductor (1) thermal pulse generated takes place and the resulting temperature profile of the component (8) with a within (11) is detected, in that between the coil cores (5) of the inductor (1) an opening (6) is formed which, on a test zone (10) of the excitation surface (9) of the component (8) is aligned, in which the joining connection of the component (8), into the test zone (10) of the excitation surface (9) of the component (8) by means of the inductor (1) of the thermal pulse is introduced, the one transverse flow of heat is generated and flows off in the direction of thickness of the component (8), the test zone (10) of the component (8) in this case, and at the same time the heated homogeneously within (11) on the side of the excitation surface (9) of the component (8) for opening (6) oriented in the inductor (1) is positioned so that a clear view of the within (11) through the opening (6) of the inductor (1) to the homogeneously heated test area (10) of the component (8) and the radiated temperature profile of the component (8) of the within (11) through the opening (6) of the inductor (1), and subsequently detected by means of a with the within (11), which is coupled to the computer (19) is evaluated, according to the german patent 10 2012 008 531,the artist characterized in thatas an inductor (1) a rotary current inductor (1) with an even number of 2 × n ferromagnetic columnar coil cores (5) is used, each of which an induction coil (7), where n = 2, 3,.., p is, the ferromagnetic columnar coil cores (5) running parallel to one another with their end surface on a ..