Method and device for non-destructive testing of a joint of a component by means of induction - thermography

摘要

A method for non-destructive testing of a joint of a component by means of induction - thermography, in which the component in a test zone of the component with an inductor, the same direction and at the wound coils with a ferromagnetic coil core, is excited and used by the inductive excitation of the component temperature profile caused in the testing zone of the component with a detected within and by means of a coupled with the computer is evaluated within and between the ferromagnetic coil cores the same direction and at the wound coils of the inductor a forming within a viewing window for the opening is formed which, on the excitation surface of the component in the testing zone of the latter is oriented in the excitation surface of the component of the inductor is introduced a thermal pulse a transverse heat flow in the excitation surface is produced and the test area of the component heated homogeneously, and, at the same time, thermographic camera on the side of the excitation surface of the component is positioned and to the forming of the viewing window opening of the inductor is aligned, whereby a within the point of view of the unobstructed through the opening of the inductor to the homogeneously heated test area of the component is produced, according to the german patent 10 2012 008 531, characterized by the combination of the following process steps:as the inductor, a rotary current inductor with an even number of 2 × n ferromagnetic columnar coil cores of the same length, which each carry an induction coil, where n = 2, 3,.., p is, ..