Shearography device and method for non-destructive material testing by shearography

摘要

Shearography device 2 comprising a coherent beam source 6, an optical diffraction device 12 for diffracting the radiation 8 emitted by the beam source 6 and reflecting a measurement object 4, and a recording device 18 for detecting the radiation transmitted by the diffraction device from the beam source, between the diffraction device 12 and the receiving device 18, a shear element 14 is arranged such that at least a first part of the transmitted by the diffraction device 12, detected by the receiving device 18 radiation of the beam source 6 at less than four interfaces of the shear element 14 is broken.