%0 Journal Article
%T Shearography: An Optical Measurement Technique and Applications<br>剪切散斑:一种光学测量技术及其应用
%A YY Hung
%A HP Ho
%A XY He
%A <br>洪友仁
%A 何浩培
%A 何小元
%J 实验力学
%D 2006
%I 
%X This article reviews shearography and its applications. Shearography is a laser based technique for full-field, non-contacting measurement of surface deformation (displacement or strain). It was developed to overcome several limitations of holography by eliminating the reference beam. It does not require special vibration isolation; hence, it is a practical tool that can be used in a field/factory environment. Shearography has already received considerable industrial acceptance, in particular, for nondestructive testing. In nondestructive testing, shearography reveals defects in an object by identifying defect-induced deformation anomalies. Other applications of shearography include strain measurement, material characterization, residual stress evaluation, leak detection, vibration studies and 3-D shape measurement.
%K shearography
%K interferometry
%K speckle pattern
%K phase determination
%K nondestructive testing
%K deformation measurement
%K residual stress measurement
%K vibration study
%K leakage detection
%K surface profiling
%K 3-D shape measurement<br>剪切散斑
%K 干涉术
%K 散斑
%K 位相识别
%K 无损检测
%K 变形测量
%K 残余应力测量
%K 振动分析
%K 泄漏探测
%K 表面轮廓术
%K 三维形貌测量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=8DE89B9226AAA75C&yid=37904DC365DD7266&vid=659D3B06EBF534A7&iid=B31275AF3241DB2D&sid=06DAE5E1DF7D0B6A&eid=2A22E972FD97071B&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=36