Three dimensionally compressed and monitored Hopkinson bar

三维压缩和监测霍普金森棒：三维压缩和监测霍普金森棒允许确定材料在这种约束下的动态机械性能和断裂行为。了解材料在动态荷载下的行为对于处理许多工程问题，如开挖、破碎、地震、爆破和结构设计是至关重要的。在岩土工程和结构工程中，材料经常受到现有的围压应力的影响。全场光学技术以超高速、高分辨率摄像机为核心，旨在辅助对脆性材料破坏引起的小应变等变形场的定量测量和本构参数的识别。

3D compressed and monitored Hopkinson bar: The 3D compressed and monitored Hopkinson bar allows determination of the dynamic mechanical properties and fracturing behaviour of materials under such confinement. Understanding material behaviour under dynamic loading is essential in dealing with many engineering problems as excavation, fragmentation, earthquake, blasting, and structure design. In geotechnical and structure projects, materials are often subjected to existing confining stresses. The full-field optical techniques, with an ultra-high speed and resolution camera in the system, aims to assist the quantitative measurement of deformation fields including small strain induced in brittle material's failure and identification of constitutive parameters.