Materials, Photonic Devices, and Sensors

Strain monitoring of bismaleimide composites using embedded microcavity sensor

[+] Author Affiliations
Amardeep Kaur, Steve E. Watkins

Missouri University of Science and Technology, Applied Optics Laboratory, 301 West 16th Street, Rolla, Missouri 65409-0040, United States

Sudharshan Anandan, K. Chandrashekhara

Missouri University of Science and Technology, Composites Research Laboratory, 231 Toomey Hall, Rolla, Missouri 65409, United States

Lei Yuan, Hai Xiao

Clemson University, Photonics Technology Laboratory, 209 Riggs Hall, 205 AMRL, Clemson, South Carolina 29634-0915, United States

Nam Phan

Naval Air Systems Command, Patuxent River, Maryland 20670-1906, United States

Opt. Eng. 55(3), 037102 (Mar 08, 2016). doi:10.1117/1.OE.55.3.037102
History: Received October 23, 2015; Accepted February 12, 2016
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Abstract.  A type of extrinsic Fabry–Perot interferometer (EFPI) fiber optic sensor, i.e., the microcavity strain sensor, is demonstrated for embedded, high-temperature applications. The sensor is fabricated using a femtosecond (fs) laser. The fs-laser-based fabrication makes the sensor thermally stable to sustain operating temperatures as high as 800°C. The sensor has low sensitivity toward the temperature as compared to its response toward the applied strain. The performance of the EFPI sensor is tested in an embedded application. The host material is carbon fiber/bismaleimide (BMI) composite laminate that offer thermally stable characteristics at high ambient temperatures. The sensor exhibits highly linear response toward the temperature and strain. Analytical work done with embedded optical-fiber sensors using the out-of-autoclave BMI laminate was limited until now. The work presented in this paper offers an insight into the strain and temperature interactions of the embedded sensors with the BMI composites.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Topics

Composites ; Sensors

Citation

Amardeep Kaur ; Sudharshan Anandan ; Lei Yuan ; Steve E. Watkins ; K. Chandrashekhara, et al.
"Strain monitoring of bismaleimide composites using embedded microcavity sensor", Opt. Eng. 55(3), 037102 (Mar 08, 2016). ; http://dx.doi.org/10.1117/1.OE.55.3.037102


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