Laser Speckle Interferometric Thermoelasticity

摘要

This report presents the theory for using laser speckle interferometry for making measurements in thermoelasticity problems. General thermoelastic theory, laser speckle interferometric theory, thermal stress deformation of thin plates, and numerical approximations to the thermostress equations are all projected. Two experimental examples are presented which involve the heating of a circular flat plate and the uniform heating of a metallic bar. Interferometrically obtained temperature measurements are compared with thermocouple data. (Author)