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Proceedings Paper

Thermal strain along optical fiber in lightweight composite FOG : Brillouin-based distributed measurement and finite element analysis
Author(s): Shu Minakuchi; Teruhisa Sanada; Nobuo Takeda; Shinji Mitani; Tadahito Mizutani; Yoshinobu Sasaki; Keisuke Shinozaki
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Paper Abstract

Thermal strain significantly affects stability of fiber optic gyroscope (FOG) performance. This study investigates thermal strain development in a lightweight carbon fiber reinforced plastic (CFRP) FOG under thermal vacuum condition simulating space environment. First, we measure thermal strain distribution along an optical fiber in a CFRP FOG using a Brillouin-based high-spatial resolution system. The key strain profile is clarified and the strain development is simulated using finite element analysis. Finally, several constituent materials for FOG are quantitatively compared from the aspect of the maximum thermal strain and the density, confirming the clear advantage of CFRP.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572H (2 June 2014); doi: 10.1117/12.2059717
Show Author Affiliations
Shu Minakuchi, The Univ. of Tokyo (Japan)
Teruhisa Sanada, The Univ. of Tokyo (Japan)
Nobuo Takeda, The Univ. of Tokyo (Japan)
Shinji Mitani, Japan Aerospace Exploration Agency (Japan)
Tadahito Mizutani, Japan Aerospace Exploration Agency (Japan)
Yoshinobu Sasaki, Japan Aerospace Exploration Agency (Japan)
Keisuke Shinozaki, Japan Aerospace Exploration Agency (Japan)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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