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Proceedings Paper

Implementation of nondestructive Young’s modulus measurement by miniature optical sensors
Author(s): Xingwei Wang; Juncheng Xu; Bing Yu; Kristie L. Cooper; Anbo Wang
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Paper Abstract

Accurate real time nondestructive modulus measurement is one of the principal requirements in service life monitoring of smart structures. However, most current measurement methods, such as tension and/or compression testing are inappropriate for such applications. For one thing, the force load may damage the casting. For another, the test process is not trivial and inconvenient for real-time modulus monitoring. This paper describes an acoustic-based measurement mechanism using two separated miniature optical sensors. The sensor features miniature size (<500μm), high resolution and accuracy, high temperature and pressure survivability, electromagnetic interference immunity (EMI), electrically non- conductivity, and chemical erosion inertness. This technique offers future potential for real-time measurement for in-service monitoring, particularly in applications involving such environments as high temperatures or high pressure.

Paper Details

Date Published: 5 November 2005
PDF: 8 pages
Proc. SPIE 5998, Sensors for Harsh Environments II, 599805 (5 November 2005); doi: 10.1117/12.631037
Show Author Affiliations
Xingwei Wang, Virginia Polytechnic Institute and State Univ. (United States)
Juncheng Xu, Virginia Polytechnic Institute and State Univ. (United States)
Bing Yu, Virginia Polytechnic Institute and State Univ. (United States)
Kristie L. Cooper, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5998:
Sensors for Harsh Environments II
Anbo Wang, Editor(s)

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