超声法研究混凝土动态损伤实验

Researches on dynamic damage test of concrete by the supersonic method

动态损伤的量化是混凝土破坏机制研究的难点。文章提出了结合SHPB实验技术，定量测量混凝土冲击损伤的超声方法，并用该法进行了动态损伤量化研究，对实验数据进行了拟合比较。研究证明该方法适用于应变率在10～40 s^-1范围内的动态损伤研究。

To quantify dynamic damage is difficult in the study of the failure mechanism of concrete. The supersonic method combined with the SHPB technology is presented to quantitatively measure impacting damage and quantify the dynamic damage. Test data are compared with the fitted results. The method is proved to be applicable for the study of dynamic damage as the strain rate is between 10 s^-1 and 40 s^-1.