频闪激光散斑散焦照相法测量板结构动态变形  

Stroboscopic Laser Speckle Defocused Photography for Measuring Dynamic Deformation of Plate Form Structures

作　　者：何玉明[1] 谭玉山[1] 

机构地区：[1]西安交通大学,华中理工大学力学系

出　　处：《华中理工大学学报》1996年第3期102-104,共3页Journal of Huazhong University of Science and Technology

摘　　要：提出了用频闪激光散斑散焦照相法分析结构动态特性的新技术．应用该技术可获得优质的全场散斑条纹图，并可用逐点滤波法进行精确定量分析．讨论了如何选择激光脉冲宽度的方法．给出了频闪激光散斑散焦照相法的实验结果．Stroboscopic laser speckle defocused photography,a new technique for measuring the dynamic behavior of a plate form structure,is put forward.A high quality of whole field speckle fringe pattern can be obtained and the point-by-point filtering method can also be used to analyse the deformation more accurately.The method of choosing the laser pulse width is discussed.Experimental results using the stroboscopic speckle de focused photography arc given.

关 键 词：频闪激光 散斑照相法 动态变形 板结构 

分 类 号：O348.11[理学—固体力学] O342[理学—力学]