Health monitoring of optical-fiber-embedded composite structure using slope-assisted BOCDR

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外文摘要：Slope-assisted Brillouin optical correlation-domain reflectometry (SA-BOCDR) is a recently developed structural health monitoring technique for measuring strain and temperature distributions along optical fibers. Although its fundamental operations have been demonstrated with some unique features, no measurement using optical fibers embedded in actual structures has been reported yet. In this work, as a first step to such practical applications, we present an example of SA-BOCDR-based structural diagnosis using composite structure comprising carbon fiber reinforced plastics. The system output well agrees the actual strain distributions. We also detect the breakage of the embedded fiber, showing the potential usefulness of SA-BOCDR in practical fields.

外文关键词：

Brillouin scatteringDistributed strain measurementCarbon fiber reinforced plastics (CFRP)Vacuum-assisted resin transfer molding (VaRTM)

作者：

Heeyoung LEE、Sonoko HAGIWARA、Yutaka OCHI、Takahiro MATSUI、Yukihiro MATSUMOTO、Yosuke TANAKA、Hitoshi NAKAMURA、Yosuke MIZUNO、Kentaro NAKAMURA

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作者单位：

Institute of Innovative Research, Tokyo Institute of Technology

First Advanced Composites Technical Department / Advanced Composites Center, Toray Industries, Inc.

Department of Architecture and Civil Engineering, Toyohashi University of Technology

Institute of Engineering, Tokyo University of Agriculture and Technology

Department of Civil and Environmental Engineering, Tokyo Metropolitan University

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出版年：

2017

電子情報通信学会技術研究報告

ISSN：0913-5685

年,卷(期)：2017.117(434)