光子学报, 2005, 34 (7): 1074, 网络出版: 2006-06-12   

电子散斑干涉位移场分离技术及其在三维测量中的应用

The Technique of Displacement Separation in ESPI and Its Application in 3-D Displacement Measurement
作者单位
山东师范大学,物理与电子科学学院,济南,250014
摘要
提供了一种可将离面位移与面内位移分离的三维位移场测量方法.在双光束电子散斑干涉中增加参考光,使这一路参考光为两光束所共用.两束光各自独立地对变形物体进行测量,结合相移技术,可分别得到包含离面和面内位移信息的二幅位相图.只需简单的位相运算就能够将面内位移场与离面位移场分离.在竖直方向上,采用两光束对称照明被测物,直接测量面内位移竖直方向分量.本文将该技术应用到柴油机油泵测量上,得到了油泵的三维位移场.该技术为三维位移场的测量提供了一种新的有效途径,也为柴油机零部件的强度和刚度分析评价提供了新的方法.
Abstract
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 in-plane displacement can be 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 be 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.

孙平, 张丽, 陶春先. 电子散斑干涉位移场分离技术及其在三维测量中的应用[J]. 光子学报, 2005, 34(7): 1074. 孙平, 张丽, 陶春先. The Technique of Displacement Separation in ESPI and Its Application in 3-D Displacement Measurement[J]. ACTA PHOTONICA SINICA, 2005, 34(7): 1074.

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