Translator Disclaimer
Paper
21 July 1998 Simultaneous strain and temperature measurement using an integrated fiber Bragg grating/extrinsic Fabry-Perot sensor
Author Affiliations +
Abstract
This paper reports on a novel optical fiber sensor configuration for conducting simultaneous strain and temperature measurements. The sensor consisted of an optical fiber-based extrinsic Fabry-Perot interferometer (EFPI) with an integrated fiber Bragg grating (FBG). The FBG was located within a glass capillary which housed the EFPI sensor and was thus in a strain-free condition. The FBG is primarily sensitive to temperature, while the EFPI was sensitive to both strain and temperature. The integrated FBG/EFPI sensor was embedded in a carbon fiber reinforced composite and evaluated. The standard deviation of strain measurement was 36 (mu) e in the range 0 to 1200 (mu) e, and the temperature measurement had a standard deviation of 3.5 degrees C in the range 30 degrees to 70 degrees C. The thermal expansion of the cross-ply composite was investigated and was found approximately 4.05 X 10-6 degrees C.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tonguy Liu, Gerard Franklyn Fernando, Lin Zhang, Ian Bennion, Yun-Jiang Rao, and David A. Jackson "Simultaneous strain and temperature measurement using an integrated fiber Bragg grating/extrinsic Fabry-Perot sensor", Proc. SPIE 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (21 July 1998); https://doi.org/10.1117/12.316988
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
Back to Top