光弹条纹图像的全场相移技术

本文详细分析了光弹性条纹图像的特点，利用图像处理技术，结合相移法及Ｔａｒｄｙ补偿法，实现了等倾线和等差线的全场相移，使得模型中任一点的主应力差值及第一主应力方向值可由计算机自动判读，实现了光弹性实验数据的自动处理。

Whole-field Phase Shifting for Isoclinic and Isochromatic Patterns

In this parer,the properties of the photoelastic fringe patterns are analysed in detail.With the help of digital image processing technology,the whole-field phase shifting is achieved for either isochromatic or isoclinic pattern.Thus,the angle of the first principal stress and the difference between the first and the second principal stress can be obtained directly from the phase images by computer.This technique may lead to automatic processing for photoelastic data.