Development of monitoring technique for element with internal defects using mechanoluminescence materials

Abstract

There are many defects found in a non-destructive inspection at areas of stress concentration like a corners of the welded materials and so on. However, the mainstreams of the inspection are ultrasonic inspection, radiographic testing and magnetic particle testing, and they need an ability to find crack, defect and so on. Therefore, we will develop technology for non-destructive inspection using mechanoluminescence materials as a simple method to find internal defects. We apply the mechanoluminescence materials on the test piece which has defects. It proves that mechanoluminescence materials can find out the defects and stress concentration.