Abstract
When the stress acts on the object, a minute temperature change is caused in proportion to the volume change. This phenomenon is called the effect of thermo elasticity. In this research, the temperature change of a metallic foil according to the load stress was measured by using this effect as an application of infrared stress measurement method. The material of the foil used three kinds (the advance, aluminum, and copper). As a result, temperature change could be caught from 0.03[x] to 0.13[x]. In addition, the temperature change of all the foils was proportional to the load stress.
