面内和离面位移场的电子散斑（ESPI）自动检测技术研究  

Automatic Measurement of 3-D Displacement Field Using ESPI

作　　者：张东升[1] 佟景伟[1] 李鸿琦[1] 

机构地区：[1]国防科技大学,天津大学

出　　处：《实验力学》1995年第4期356-365,共10页Journal of Experimental Mechanics

摘　　要：本文采用频域同态滤波技术，减少了电子散斑的噪声，得到高质量的条纹图，并介绍一种自行设计的新型相移器，它结构简单、性能稳定、测试精度高和操作方便。此外，应用以上两种技术，以承受均布载荷周边固定的圆板为例，实现了电子散斑三维位移场的自动测量，实验与理论值吻合良好。in this paper,a Fourier filteration algoritham technique is presented for reducingthe noiSe of ESPI and obtaining high quality fringe pattern.A self-designed new type of phaseShifter is also introduced to carry out the automatic measurement of 3-D displacement field.Theadvantages of this phase shifter are simple in its structure; hash in itS stability and accuracy;andeasy to operate.An experiment is made to determine 3-D diSPlacement field of a circularrestrained plate subjected to uniform load. The experimental results are in good agreement withthose from theoretical analysis.

关 键 词：散斑 相移技术 三维 位移测量 

分 类 号：O348.12[理学—固体力学]