Patent ID: 8901515

Claim:
A method for nondestructive testing of a workpiece surface by a fluorescent penetration test, comprising the steps of: a) cleaning an area of the workpiece surface that is to be inspected; b) applying a fluorescent liquid penetrant to the area of the workpiece surface that is to be inspected, wherein a first portion of the penetrant penetrates into a recess in the workpiece surface; c) removing a second portion of the penetrant from the workpiece surface that does not penetrate into the recess; d) applying a developer to the area of the workpiece surface that is to be inspected and drawing out a portion of the first portion of the penetrant from the recess by the developer; e) bleaching the portion of the first portion of the penetrant drawn out from the recess by the developer by a beam of light; and f) visually evaluating a remaining portion of the first portion in the recess.