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Proceedings Paper

A novel laser ultrasonic sensor for testing thickness
Author(s): Rongqing Xu; Rui Zhao; Xiao Chen; Zhonghua Shen; Jian Lu; Xiaowu Ni
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Paper Abstract

A new laser ultrasonic sensor for testing samples' thickness is developed. This sensor has high-frequency response and high sensitivity. Furthermore it is easy to adjust. When the sensor is used to focus on polished iron plate, well-defined longitude-wave and its echo waves can be obtained. Based on the experimental results, the sample’s thickness can be deduced. The theoretical and experimental results are in good agreement with relative error of 0.5%.

Paper Details

Date Published: 14 February 2005
PDF: 6 pages
Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.573052
Show Author Affiliations
Rongqing Xu, Nanjing Univ. of Science and Technology (China)
Jiangsu Univ. of Science and Technology (China)
Rui Zhao, Nanjing Univ. of Science and Technology (China)
Xiao Chen, Nanjing Univ. of Science and Technology (China)
Zhonghua Shen, Nanjing Univ. of Science and Technology (China)
Jian Lu, Nanjing Univ. of Science and Technology (China)
Xiaowu Ni, Nanjing Univ. of Science and Technology (China)
Xuzhou Normal Univ. (China)


Published in SPIE Proceedings Vol. 5634:
Advanced Sensor Systems and Applications II
Yun-Jiang Rao; Osuk Y. Kwon; Gang-Ding Peng, Editor(s)

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