Patent ID: 6279404
Filing Date: 2001-08-28
Classification: G01B,G01N

Abstract:
A device for measuring the deformation of a mechanical test specimen, characterized by comprising:a supporting means (14, 21, 24) for supporting said specimen (16); said specimen being generally flat and being defined by at least a substantially flat first face (16b);a pressing member (3) movable by actuating means (54) with respect to said supporting means (14, 21, 24) for stressing said specimen (16) in a controlled manner and exerting a controlled concentrated force on the face of the specimen (16) deforming mainly the portion of the specimen where said concentrated force is applied; andan interferometer (9) comprising a branch (9d) defined optically by said first face (16b) of said specimen (16) and for generating interference images related to the deformation of said specimen (16).