Experiment Techniques of Mechanical Properties of Brittle Materials with Pre-Existing Cracks
Rock mass is a multi-fractured body. Regardless of the size of these flaws, they can reduce the strength of rock materials . As rock is not a transparent material, the process of deformation to failure is difficult to observe. Transparent brittle materials are able to solve this problem. This paper provides a production method of prefabricated defects. And the results prove that the frozen PMMA and glass are very similar with rocks in breaking process and mechanical properties.
M. L. Wang and X. Yang, "Experiment Techniques of Mechanical Properties of Brittle Materials with Pre-Existing Cracks", Applied Mechanics and Materials, Vols. 130-134, pp. 3908-3911, 2012