Mode-shape measurement of piezoelectric plate using temporal speckle pattern interferometry and temporal standard deviation

被引：7
|
作者：
Chang, Ching-Yuan [1 ]
Ma, Chien-Ching [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mech Engn, Taipei 10617, Taiwan
来源：
OPTICS LETTERS | 2011年 / 36卷 / 21期
关键词：
D O I：
10.1364/OL.36.004281
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This study proposes an image processing method to improve the quality of interference fringes in mode-shape measurement using temporal speckle pattern interferometry. A vibrating piezoelectric plate at resonance was investigated, and the full-field optical information was saved as a sequence of images. According to derived statistical properties, an algorithm was developed to remove noise from both the background and disturbance, resulting in high-resolution images of excellent quality. In addition, the resonant frequency and mode shape obtained using the proposed algorithm demonstrate excellent agreement with theoretical results obtained by the finite element method. (C) 2011 Optical Society of America
引用
收藏
页码：4242 / 4244
页数：3
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