Abstract: Quantitative characterization of a crack detection analysis method is achieved by determining the detection sensitivity and background noise produced by the analysis method by suitably processing images obtained from one or more control specimens prepared by the method and subjected to appropriate and optimized conditions of illumination. In addition, the crack detection analysis method is optimized by looking for the parameters which influence the method and determining the value thereof which maximizes detection sensitivity and minimizes background noise.

Abstract: An apparatus for characterizing an analysis method based on fluorescent crack detection. The surface defects in articles to be checked are revealed by using a visible radiation around an excitation wavelength. The apparatus includes an illumination device, a camera and an image processor. The illumination device includes an ultraviolet light source, a monochromator and a light guide to focus the ultraviolet radiation.