岩石变形破坏局部化的白光数字散斑相关方法研究(英文)

Study on deformation localization of rock by white light digital speckle correlation method

介绍了白光数字散斑法的基本原理 ,并采用白光数字散斑相关方法研究了煤岩的变形局部化 ,通过实验测定了煤岩变形局部化的开始时刻、演化过程 ,首次获得了局部化带的宽度 ,为研究岩石非均匀变形的演化过程。

The principle of white light digital speckle correlation method (DSCM) is presented in this paper, and deformation localization of rock and coal is discussed by using white light DSCM. The starting point of deformation localization is gauged, and the evolution process of localization is demonstrated, and for the first time, the width of deformation localization is obtained by experiment. By experimental and theoretic analysis, the results of investigation indicate that the white light digital speckle correlation method is very useful in studying the non homogenous evolution process of rock, and by this method, the microscopic parameter of rock can be gauged.