By lossless crack detection characteristic
LULU SONG
0501 Electrical automation
Abstract: The lossless crack detection is the use is uses the beam photosensitive material (usually with beam light sensitive film), places is accepted by perspective behind from after event's different intensity distributed beam. Because of the beam intensity and the film emulsion's photographic function, is proportional under the normal condition. Therefore the film forms under the actinism dives the shade, after darkroom processing, will demonstrate the object the structure image. According to the negative on the phantom shape and can the blackness non-uniform degree, whether there is evaluate is tested the flaw and the flaw nature, the shape, the size and the position.
Key words: Lossless crack detection; Beam crack detection; Turbulent flow crack detection
