Method for effecting a surface examination of coated components

Details Method for effecting a surface examination of coated components Method for effecting a surface examination of coated components

G - Physics

01

N

324/50

G01N 27/90 (2006.01)

Patent

CA 1178661

METHOD FOR EFFECTING A SURFACE EXAMINATION OF COATED COMPONENTS ABSTRACT OF THE DISCLOSURE A method of effecting an examination by eddy current means (24) of the surface of a coated component (58) for cracks having at least a preset minimal dimension. The subject method can be used to detect such cracks in the surface of metal components (58) that are coated or covered with a nonmetallic material. Further, through the use of the subject method such cracks are detectable without necessitating the removal of the nonmetallic coating or covering from the surface of the metal component (58). The subject method encompasses the steps of establishing calibration readings for cracks of the desired dimension utilizing the eddy current means (24) with which the desired surface examination of the given component (58) is to be effected, performing a preexamination validation of the operativeness of the eddy current means (24), and conducting with the eddy current means (24) the surface examination of the given metal component (58) that is coated or covered with a nonmetallic material.

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