ダブルパルスレーザによる衝撃波の三次元計測 : 第1報, 超音速気流中を飛翔する物体から発生する衝撃波形状の三次元計測と画像処理

概要

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It is extremely important to obtain basic knowledge of shock waves formed in turbo machines rotating at supersonic speed. The main purpose of this research is to develop an advanced 3-dimensional visualization technique using double-pulsed holographic interferometry with diffused laser light. As the initial step of this research, this technique was applied to observation of the oblique shock waves generated at a "U" -shaped pin, which was utilized in order to get better understanding of the 3-dimensionality of an object flying counter to the supersonic flow in this 1st report. The oblique shock waves generated at each edge could be visualized by the interference fringes and clearly separated in the reconstructed real image. Also by employing the reconstructed process coupled with a spatial filter, it could be verified that this diffused double-pulsed holography is effectively applicable to the 3-dimensional measuring technique of the shock wave. Furthermore, the algorithm for real-time data processing was developed.
一般社団法人日本機械学会の論文
1990-09-25