REVERSIBLE PIEZOCHROME COATING WITH POLYMERIC MATRIX FOR DETECTION OF IMPACTS ON COMPOSITE SUBSTRATES

摘要

The present invention relates to a piezosensitive coating (12) for the detection of impacts (121, 122, 123, 124) on a substrate (10), comprising a matrix in which at least one piezochromic pigment is dispersed, said matrix is a polymeric matrix, the piezochromic pigment is chosen so that said coating changes color from a determined pressure threshold, corresponding to a pressure, or of transition of said piezochromic pigment in said matrix between two polymorphic forms of different colors , or spin transition of said pigment in said matrix. The invention also relates to a method of producing such a piezosensitive coating.