| 面内和离面位移场的电子散斑（ESPI）自动检测技术研究 |
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| 引用本文： | 张东升 佟景伟. 面内和离面位移场的电子散斑（ESPI）自动检测技术研究[J]. 实验力学, 1995, 10(4): 356-365 |
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| 作者姓名： | 张东升 佟景伟 |
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| 作者单位： | 国防科技大学，天津大学 |
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| 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。
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| 关 键 词： | 散斑 相移技术 三维 位移测量 |
Automatic Measurement of 3-D Displacement Field Using ESPI |
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| Zhang Dongsheng,Tong Jinwei,Li Hongqi. Automatic Measurement of 3-D Displacement Field Using ESPI[J]. Journal of Experimental Mechanics, 1995, 10(4): 356-365 |
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| Authors: | Zhang Dongsheng Tong Jinwei Li Hongqi |
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| Affiliation: | Zhang Dongsheng;Tong Jinwei;Li Hongqi(National University of Defense Technology)(Tianjin Unversity) |
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| Abstract: | 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. |
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| Keywords: | ESPI digital image processing phase shifting 3-D displacementmeasurement automatic measuring. |
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