Measurement on Impact-induced Elastic-plasticity by Laser Interferometer System

This paper designs a material impact elastoplastic scheme for the lack of impact elastoplastic experiments in the teaching of material mechanics in safety and mining. It was carried out using an impact gas gun and a fast laser interferometer. The sample in the experiment was a brittle rock material. The experimental results show that the particle velocity of the rock surface under the specific impact will show two stages of elastoplasticity. With the increase of the impact strength, the development of the surface particle velocity in the elastoplastic phase changes significantly, and the overall impact elastic strength increases with the increase of the impact velocity. Practice shows that the completion and implementation of the experimental program enriches the practical teaching links of material mechanics.