%0 Journal Article
%T The Technique of Displacement Separation in ESPI and Its Application in 3-D Displacement Measurement<br>电子散斑干涉位移场分离技术及其在三维测量中的应用
%A 孙平
%A 张丽
%A 陶春先
%J 光子学报
%D 2005
%I 
%X A novel method for 3-D displacement measurement is presented in the paper by using isolating out-of-plane displacement from in-plane displacement. A reference is added to the dual-beam symmetrical illumination system and shared by the two illumination beams, which are separately used to illuminate the test object. With the help of phase-shifting techniques, two phase maps that include out-of-plane and inplane displacement can he obtained. Theoretical analysis shows that out-of-plane displacement can be separated from in-plane displacement only by simple calculation of phase. In perpendicular the in-plane displacement can he measured directly by dual-beam symmetrical illumination system. When the technique is applied to an oil pump in diesel engine, 3-D displacement fields of the pump are successfully measured. It shows that this technique provides a new effective approach to 3-D displacement measurement and a new method for intensity and rigid of diesel engine elements analysis.
%K Physics optics
%K Electronic Speckle Pattern Interferometry (ESPI)
%K Phase-shifts
%K Displacement measurement
%K Oil pump<br>物理光学
%K 电子散斑干涉
%K 相移
%K 位移场测量
%K 油泵
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=C8C56CF71DE474B0&yid=2DD7160C83D0ACED&vid=339D79302DF62549&iid=DF92D298D3FF1E6E&sid=CD794621A184DC14&eid=E6E6318AC4BCBFDB&journal_id=1004-4213&journal_name=光子学报&referenced_num=6&reference_num=12