用数字化ESPI系统观测物面振型分布

Using Digital Electronic Pattern Interferometry ESPI System for Vibration Analysis

本文剖析了模拟ESPI测振的原理,给出了一种利用数字化ESPI系统观测物面振型分布的新方法,推出了计算公式,并通过实验用这一方法获得了铝板振型分布条纹图。

This paper has given a new method for vibration analysis with the digital Electronic Speckle Pattern Interfermetry(ESPI).The maps of the vibration characteristics of a rough aluminium plate have been got from experiment using this new method.