MATERIAL TO BE MEASURED FOR STRESS ANALYSIS, COATING LIQUID FOR FORMING COATING FILM LAYER ON THE MATERIAL TO BE MEASURED, AND STRESS-INDUCED LUMINESCENT STRUCTURE

摘要

On the surface of a material to be measured for stress analysis which has a stress-induced luminescent material layer formed thereon, a distortion energy is transmitted from a base material of a stress-induced luminescent material to the stress-induced luminescent material with high efficiency. The material to be measured for stress analysis has, formed on its surface, a coating film layer, which emits light upon exposure to a change in distortion energy. The coating film layer is formed of a synthetic resin layer containing stress-induced luminescent particles, and the modulus of elasticity of a base material is not less than 1.0 GPa. The thickness of the coating film layer is preferably 1 µm to 500 µm.