Display device, by holographic interferometry, of the deformations of structures deformable

摘要

P the invention relates to the display of the deformation of deformable structures by interferometry holographic. It relates to a display device in which the interferogram of the object, obtained by double exposure for a periodic deformation or by exposure to the long period of vibration for a vibrating object, is recorded in a crystal electro - optic and photoconductor to which is applied an electric field is substantially orthogonal to the mean direction of the fringes. The interferogram is observed in a plane image or recorded in a memory in the case where one wishes to keep the information for the reading is destructive, the information. / p & & p & the invention applies to the non-destructive testing of mechanical parts placed under stress. / p