%0 Journal Article
%T DISPLACEMENT MEASUREMENT BY ULTRASONIC SPECKLE DIGITAL INTERFEROMETRY<br>超声散斑数字干涉法测量物体位移的研究
%A ZHENG Weihua
%A ZHU Hongmao
%A <br>郑伟花
%A 朱鸿茂
%J 力学与实践
%D 2008
%I 
%X This paper proposes a method of measuring displacement by ultrasonic speckle interferometry. Base on the digital interferometry method and phase-shift-frequency-shift principle, formulas for the ultrasonic speckle digital interferential measurement are deduced. In order to verify the theoretical results, an experiment of measuring in-plane and out-of-plane displacements of an aluminous specimen is performed. The experimental results indicate that the theoretical analyses are correct and the method can be applied in measuring displacements and deformations.
%K ultrasonic speckles
%K digital interferometry
%K displacement measurement<br>超声散斑
%K 数字干涉
%K 位移测量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=01E695BC0EB6FAE3047BE0B26B5D752F&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=CA4FD0336C81A37A&sid=80A07035DF96B0C4&eid=46CB27789995047D&journal_id=1000-0879&journal_name=力学与实践&referenced_num=0&reference_num=6