The invention relates to a piezoelectric actuation micro-
tensile testing device and belongs to the field of test of mechanical properties of materials under
micro nano dimension in a
micro nano electromechanical
system. The device comprises a piezoelectric actuation unit, a micro tension sensor, a micro displacement detection unit, a position adjustment unit, an optical
microscopic imaging unit and a base. Compared with the prior art, the device has the advantages that the
axial deformation and the axial tension of a sample can be simultaneously and directly measured, and the elasticity modulus, the yield strength, the
breaking strength and other
mechanical property parameters of the sample under the micro dimension can be measured. According to the piezoelectric actuation micro-
tensile testing device, the piezoelectric actuation unit, the micro tension sensor, the micro displacement detection unit, the position adjustment unit and the optical
microscopic imaging unit are designed by adopting the modularization thought, wherein the commercialized and high-precision micro tension sensor and a high-precision
capacitance type displacement sensor are adopted to ensure the measurement accuracy of the axial tension and
axial deformation of the sample; the device is simple in structure, low in cost, high in precision and good in smooth upgrading performance.