岩土工程学报2012，Vol.34Issue(10)：1939-1943,5.
岩石破坏动态变形场观测系统及应用
Dynamic deformation field measurement system for rock failure and its application
摘要
Abstract
A dynamic deformation field measurement system based on high-speed image capturing devices and digital speckle correlation method (DSCM) is established to measure the dynamic deformation of rock specimens. The principle and elements of the system are introduced. Among them, the choice of special light sources, the setting of the imaging acquisition rate and the triggering techniques for high-speed camera capturing are described as the key techniques for dynamic deformation measurement of rock. The dynamic deformation field measurement system can accurately capture the high-speed images and then obtain the quantitative deformation fields for a rock specimen subjected to either quasi-static or dynamic loadings. Two experiments, a Brazilian disc test and a dynamic mode-I crack fracture test, are performed to verify the feasibility and effectiveness of the measurement system. The quantitative dynamic deformation fields during the failure procedure of brittle rock obtained by the dynamic deformation field measurement system may provide solid experimental support for intensive study of rock failure mechanism.关键词
动态变形场/高速/数字散斑相关方法/岩石破坏Key words
dynamic deformation field/high speed/digital speckle correlation method/rock failure分类
建筑与水利引用本文复制引用
曹彦彦,马少鹏,严冬,郭文婧,马沁巍..岩石破坏动态变形场观测系统及应用[J].岩土工程学报,2012,34(10):1939-1943,5.基金项目
国家自然科学基金项目 （）
地震动力学国家重点实验室资助项目 （）
