METHOD FOR DETECTING SURFACE BREAKING DEFECTS IN THE HARDENED SURFACE OF A BEARING COMPONENT, ESPECIALLY OF A BEARING OF A WIND TURBINE

摘要

Method for detecting surfaces breaking defects in the hardened surface of a bearing component (2), especially of a bearing of a wind turbine, whereby the surface (2) is scanned with a detecting device (1) comprising an array (8) of coils (9, 9a, 9b) with at least one coil (9, 9a, 9b) being controlled as a transmitting coil T generating a magnetic field inducing an eddy current in the surface (2) and at least one coil (9, 9a, 9b) being controlled as a receiving coil (R) measuring a magnetic field generated by the eddy current and providing respective measurement signals, and a control device (6) for processing the measurement signals.