Micromechanics experimental study for the interphase of composite materials

Microscopic digital image metrology system, which is a combination of a long-focus microscope and a digital image measuring device, is developed for study in the mechanics behavior of the interphase of bimaterials. The natural texture of a specimen's surface is though as a carrier of deformation information and is analyzed to obtain the displacement field in each step, strain field and their real-time variation of the interphase. The resolution of the micro-metrology system is 10 nm. In this paper, the micro- metrology system is employed to investigate the mechanics behavior of the interphase under thermal impulsing. The experimental results that the interphase are the main factors of affecting the mechanics characteristic of the whole composite structure.