Study of Microplasticity of Solids by Laser Interferometry Method

Abstract

The laser interferometry method has a considerable opportunity for nondestructive characterization of materials. The advantages of this method are: inertialessness, high stability to external action (magnetic or electric fields, radiation), absence of mechanical contacts with measured subject, remote measuring, i.e. all components of device except one reflector may be placed at the large distance from measured subject; it may combine large range of registered displacement (from one tenth of micron up to 1 meter) with a constant division of deformation scale. The method is precise and absolute, calibration is not needed. and the main advantage is its high sensitivity and very small deformation base of measurements.