Mode-shape measurement of piezoelectric plate using temporal speckle pattern interferometry and temporal standard deviation
Journal
Optics Letters
Journal Volume
36
Journal Issue
21
Pages
4281-4283
Date Issued
2011
Author(s)
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.
SDGs
Type
journal article