OPPA 振動分布計を用いた自動車のボディとエンジンヘッドの振動分布計測

抄録

We have developed one-pitch phase analysis method (OPPA method) that measures the three-dimensional shape of a planar object at high speed. Using this, we constructed a system for measuring changes in 3D shape at high speed, and developed an OPPA vibration distribution meter for measuring vibrations of 3D objects. This system allows frequency analysis for each pixel of the camera. Each pixel of the camera is perfectly synchronized sensors without contact to an object. And it is quite easy to use. An accurate vibration distribution measuring device can be constructed. As an application example, the vibration of the body of a car, engine head, etc. is measured. The vibration mode analysis is also performed. The measurement principle and application examples are shown.