Thermal-stress Analysis of Beam Loaded by 3 Point Bending

This paper describes investigation of experimental thermal stress analysis of stainless steel which was loaded by three-point bending. Loading took place cyclically with constant amplitude. The measurements were performed using as contactless scanning of infrared radiation emitted during loading from the face of specimen. The results were evaluated according to the theory of thermoelasticity. After evaluation of the results we get stress distribution of first invariant on the front face of the specimen.