基于数字散斑相关法的岩石材料力学性能的测试  

Rock mechanical behaviors testing by digital speckle correlation method

作　　者：米红林[1] 

机构地区：[1]上海应用技术学院机械工程学院,上海201418

出　　处：《应用光学》2013年第1期123-127,共5页Journal of Applied Optics

基　　金：上海市教育委员会一般项目(060Z028);上海应用技术学院教学改革资助项目(1020T100036)

摘　　要：岩石在外力作用下会发生形变,发现和了解岩石材料的形变、应力分布等对避免灾害会起到重要的预警作用。采用高精度的数字散斑相关技术,对岩石材料形变、应力和应变进行了非接触式测量。为验证实验结果的有效性,电阻应变计贴附于采集区附近并且实验结果与电测结果吻合较好。表明数字散斑相关测量技术能够用于岩石等材料的形变检测,预报变形信息,结果可以定量和定性显示。Rock subjected to external force can produce deformation. Discovery and knowledge of the deformation information and stress distributions of rock play important roles in warning and avoiding the catastrophic failure. Digital speckle correlation method （DSCM） was used to measure the deformation, stress and strain of rock material by non-contact mode. In order to verify the validity of the experimental results, electronic resistance gauge （ERG） was adhered to the near picking area and the experiment results and ERG results agreed well. Through studying the mechanical behaviors of rock by DSCM, it indicates that DSCM technique can be used to measure the deformation of rock and forecast deformation information. The results can be given by quantitative or qualitative method.

关 键 词：光学测量 数字散斑相关技术 岩石材料 形变 

分 类 号：TN241[电子电信—物理电子学] O348.11[理学—固体力学]