Bearing Failure Monitoring of C/C Composites with an Attached Optical Fiber.
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- TAKAHASHI Jun
- National Institute of Materials and Chemical Research
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- NOMURA Masato
- Science University of Tokyo
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- TSUDA Hiroshi
- National Institute of Materials and Chemical Research
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- KITADE Shintaro
- Ishikawajima-Harima Heavy Industries Co., Ltd.
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- NAGAI Hideki
- University of Tokyo
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- KEMMOCHI Kiyoshi
- National Institute of Materials and Chemical Research
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- HAYASHI Ryuichi
- National Institute of Materials and Chemical Research
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- FUKUDA Hiroshi
- Science University of Tokyo
Bibliographic Information
- Other Title
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- 光ファイバによるC/C複合材料の面圧破壊モニタリング
- ヒカリ ファイバ ニヨル CC フクゴウ ザイリョウ ノ メンアツ ハカイ モ
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Abstract
To realize future transport such as SST (HSCT), HST and space plane, we have to develop drastic technologies for lightening weight and assuring reliability of composite structures. In this connection, authors have studied damage monitoring techniques for composite structures by using fiber optic methods. In this paper, we investigated a possibility of bearing failure monitoring of the bolted joints of C/C composites by detecting the breaking of an attached optical fiber. Results obtained are summarized as follows: (1) Damage cannot be detected unless the plastic coating of optical fibers is stripped. (2) When attaching the stripped optical fiber longitudinally to the loading direction, bearing and net tension failure can be detected though shear-out failure cannot be detected. (3) When attaching the stripped optical fiber transversely to the loading direction, both bearing and shear-out failure can be always detected. There is a proportional correlation between the distance from the optical fiber to hole edge and the pin displacement at optical fiber breaking. This attached type fiber optics is effective to apply to the practical structure monitoring, i.e., not only high temperature composite structures but also some kinds of infrastructures.
Journal
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- Journal of the Japan Society for Composite Materials
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Journal of the Japan Society for Composite Materials 23 (3), 100-107, 1997
The Japan Society for Composite Materials
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Details 詳細情報について
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- CRID
- 1390001204623708416
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- NII Article ID
- 10002465037
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- NII Book ID
- AN00196748
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- ISSN
- 18848559
- 03852563
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- NDL BIB ID
- 4214798
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed