Multilayered dynamic strain gauge using of piezoelectric PVDF films

Abstract

The strain gauge made of a piezoelectric film is proposed. The operation of the gauge is based on the piezoelectric effect: the deformation of the gauge causes an electric potential proportional to the deformation. The gauge consists of piezoelectric layers, covered by metal electrodes and adhesive layers that connect the film layers to a multilayer rectangular bar. Since the piezoelectric film has a small modulus of elasticity, the strain gauge can be used to measure the deformation of structures from soft materials.