Dynamic Fracture Under Mixed-Mode Loading

本研究项目是研究一般面内加载条件下固体的动态断裂问题。目的是为了更好地理解复合型动态加载下裂纹萌生、裂纹路径演化和裂纹扩展的机理。实验将在Homelite 100上进行，这是一种脆性聚酯，在力学行为方面已经有了很好的特征，特别是在开放模式加载下的动态断裂。动态断裂事件将使用高速分幅相机以阴影方式进行监视，以确定应力强度因子以及裂纹扩展的历史。

This research project is for a study of the dynamic fracture of solids under conditions of general in-plane loading. The aim is to better understand the mechanics of crack initiation, crack path evolution, and crack growth under mixed mode dynamic loading. Experiments will be performed on Homelite 100, a brittle polyester that has been well characterized in terms of mechanical behavior, particularly dynamic fracture under opening mode loading. The dynamic fracture events will be monitored using a high speed framing camera in a shadowgraph arrangement to determine the stress intensity factor as well as the history of crack extension.