Ultra High speed imaging of dynamic fracture in transparent Spinel ceramic

Ultra High speed imaging of dynamic fracture in transparent Spinel ceramic. The videos where film at frame rate of 2,5,7.5 and 8 milion frame per second. The Spinel bar, 3mm thick, is standing upright and unsupported. It is shock-loaded by a steel bar (Hopkinson) on the right hand side. The crack is initiated at the opposite left side, which is in tension.对透明氧化镁陶瓷中动态断裂的超高速成像研究。视频以每秒2,500,000、5,000,000、7,500,000及8,000,000帧的帧率进行拍摄。厚度为3mm的氧化镁棒竖直放置，且未进行支撑。通过右侧的钢棒（霍普金森装置）进行冲击加载。裂纹从相对的左侧开始，该侧处于拉伸状态。