介绍了数字散斑法、光弹性贴片法和云纹干涉法三种测量方法的发展现状,这三种方法都可用于正确测定混凝土断裂参数和观测混凝土失稳断裂前裂缝扩展过程。通过对三种方法的优劣对比分析表明数字散斑法对太多数混凝土断裂实验研宄有更好的适用性。
This paper introduces the development of three kinds of methods of digital speckle, photo-- elastic patch and moire interferometry, which can be used to determine the correct parameters and the observating the crack propagation process before concrete fracture and unstable fracture. Through comparative analysis of advantages and disadvantages of the three methods, it shows that the digital speckle method has a better applicability for majority concrete fracture experiment.