応力発光体と計測応用(<特集>次世代先進センサーを拓く単結晶材料)

抄録

Mechanoluminescence is the phenomenon of luminescence induced by a form of mechanical energy, such as compression, tension, torsion, friction, or mechanical shock. In the second half of 1990, we have revealed that certain materials showed a strong light emission repeatedly in small response to stress applied in elastic region, and then this phenomenon was named elasticoluminescence. The elasticoluminescence material provides an effective tool for a non-destructive inspection method, such as a visualization of internal fatigue crack of pressure vessel, a dynamical stress distribution of inside the structure, and so on. This article gives an outline of the developed elasticoluminescence materials, their luminescence properties, and the typical applications for innovative non-destructive inspection method.