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Proceedings Paper

Structural health monitoring of CFRP airframe structures using fiber-optic-based strain mapping
Author(s): I. Takahashi; K. Sekine; M. Kume; H. Takeya; Y. Iwahori; S. Minakuchi; N. Takeda; K. Enomoto
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Paper Abstract

This paper proposes structural health monitoring technology based on the strain mapping of composite airframe structures through their life cycles by FBG sensors. We carried out operational load tests of small-sized mockup specimens of CFRP pressure bulkhead and measured the strain by FBG sensors. In addition, we confirmed strain change due to stiffener debondings. Moreover, debonding detectability of FBG sensors were investigated through the strain monitoring test of CFRP skin-stiffener panel specimens. As a result, the strain distribution varied with damage configurations. Moreover, the change in strain distribution measured by FBG sensors agrees well with numerical simulation. These results demonstrate that FBG sensors can detect stiffener debondings with the dimension of 5mm in composite airframe structures.

Paper Details

Date Published: 6 April 2012
PDF: 11 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834531 (6 April 2012); doi: 10.1117/12.914226
Show Author Affiliations
I. Takahashi, Mitsubishi Electric Corp. (Japan)
K. Sekine, Mitsubishi Electric Corp. (Japan)
M. Kume, Mitsubishi Electric Corp. (Japan)
H. Takeya, Mitsubishi Electric Corp. (Japan)
Y. Iwahori, Japan Aerospace Exploration Agency (Japan)
S. Minakuchi, The Univ. of Tokyo (Japan)
N. Takeda, The Univ. of Tokyo (Japan)
K. Enomoto, The Materials Process Technology Ctr. (Japan)

Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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