| 激光刀口法声表面波分布图像化系统 |
| |
| 引用本文： | 文继国,张玉兴. 激光刀口法声表面波分布图像化系统[J]. 电子科技大学学报(自然科学版), 2008, 37(4): 578-581 |
| |
| 作者姓名： | 文继国 张玉兴 |
| |
| 作者单位： | 电子科技大学电子工程学院,成都,610054;千叶大学工学部,日本,千叶,2638522;电子科技大学电子工程学院,成都,610054 |
| |
| 摘 要： | 介绍了激光刀口法声表面波(SAW)分布图像化高速测量系统的原理和系统构成,并进行了测试验证。通过将声表面波传播时引起的被测件表面微变转换为入射到光电二极管的光量变化,转换出的电信号下变频到中频进行检波和鉴相后输入到高速数据采集器,实现了约20 min测试2 620(x)×410(y)点阵,获取的声表面波振幅和相位数据重构声表面波分布的图像。
|
| 关 键 词： | 正交检波 激光刀口法 声表面波 波数域分析 |
| 收稿时间： | 2007-11-22 |
Visualization System for SAW Distribution Based on Knife-Edge Laser Probe |
| |
| WEN Ji-guo,ZHANG Yu-xing. Visualization System for SAW Distribution Based on Knife-Edge Laser Probe[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(4): 578-581 |
| |
| Authors: | WEN Ji-guo ZHANG Yu-xing |
| |
| Affiliation: | 1.School of Electronic Engineering,University of Electronic Science and Technology of China Chengdu 610054;2.Department of Electronics and Mechanical Engineering,Chiba University Chiba Japan 638522 |
| |
| Abstract: | This paper focuses on the theory, setup, and experiment of a visualization system for surface acoustic wave (SAW) distribution based on knife-edge laser probe. The surface micro-bend caused by the SAW leads to variations of incident light to an optical detector. The converted electrical signal is down-converted to intermediate frequency for detection, and the output signals including both the amplitude and phase are fed to the high-speed data-logger. Data acquisition of 2 620(x)×410(y) points in 20 min is realized, then image can be formed from the data. |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子科技大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《电子科技大学学报(自然科学版)》下载全文 |
|
