Mode-shape measurement of piezoelectric plate using temporal speckle pattern interferometry and temporal standard deviation |
| |
Authors: | Chang Ching-Yuan Ma Chien-Ching |
| |
Affiliation: | Department of Mechanical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan. |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|