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Proceedings Paper

High-temperature fiber optic strain sensors in fatigue-loading conditions
Author(s): Jennifer L. Elster; Tuan A. Tran; Adam E. Barnes; Jack E. Coate; Michael F. Gunther; Russell G. May; Richard O. Claus
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Paper Abstract

Optical fiber sensors are used to monitor strain at elevated temperatures on modern high- temperature alloys during cyclic loading. Presented are the application and operation of metal coated silica-based fibers and extrinsic Fabry-Perot strain sensors monitoring fatigue tests at high-temperatures. The resultant strains from varying fatigue cycles and temperatures, from ambient to 2070 degrees F (1132 degrees Celsius), were monitored with surface-attached, short gage length, low finesse Fabry-Perot interferometric optical fiber sensor elements. The results demonstrate that the fiber optic strain sensors are able to withstand extreme temperatures, while maintaining a high level of performance. The capabilities of the fiber optic strain sensors make it possible to monitor material property changes during high- temperature fatigue loading.

Paper Details

Date Published: 30 May 1996
PDF: 7 pages
Proc. SPIE 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation, (30 May 1996); doi: 10.1117/12.240858
Show Author Affiliations
Jennifer L. Elster, Fiber and Sensor Technologies, Inc. (United States)
Tuan A. Tran, Fiber and Sensor Technologies, Inc. (United States)
Adam E. Barnes, Fiber and Sensor Technologies, Inc. (United States)
Jack E. Coate, Air Force Wright Lab. (United States)
Michael F. Gunther, Virginia Polytechnic Institute and State Univ. (United States)
Russell G. May, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2718:
Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation
Kent A. Murphy; Dryver R. Huston, Editor(s)

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