Proposal of noninvasive and noncontact optical measurement technology for flaw detection.

Noninvasive and noncontact optical measurement apparatus capable of detecting surface flaw is demonstrated. It is based on an optical interference technology transferred by Prof. Shioda of Saitama University.
The outstanding feature is high speed sampling system and it can realize a high-speed imaging processing and make it possible to measure at strict state that received around 100Hz vibration.