Wall thickness inspection method, the calibration tool and eddy current detection system

摘要

PROBLEM TO BE SOLVED: To more easily inspect the position of a hole provided in a turbine blade.;SOLUTION: An eddy current probe 120 is calibrated by inserting a rod-like magnetic body 200 into a groove to perform eddy current detection of the rod-like magnetic body 200 through a plate 320 having wall thickness determination reference thickness of the turbine blade 900 before an eddy current detection process for inserting the rod-like magnetic body 200 into a cooling hole 910 of the turbine blade 900 and scanning the eddy current probe from the surface of the turbine blade 900 to perform eddy current detection. Thus, an inspector can more easily inspect the position of the cooling hole 910 by performing eddy current detection to perform easy determination.;COPYRIGHT: (C)2013,JPO&INPIT