FBGセンサを用いたCFRP積層板中の非軸対称熱残留ひずみの測定 Measurement of Non-Axisymmetric Thermal Residual Strain in CFRP Laminates Using FBG Sensors

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著者

    • 岡部 洋二 OKABE Yoji
    • 東京大学大学院工学研究科航空宇宙工学専攻 Department of Aeronautics and Astronautics, The University of Tokyo
    • 辻 良平 TSUJI Ryohei
    • (株)豊田自動織機共和工場技術開発センター研究開発部 Technology Development Center, Kyowa Plant, Toyota Industries Corporation
    • 武田 展雄 TAKEDA Nobuo
    • 東京大学大学院新領域創成科学研究科先端エネルギー工学専攻 Department of Advanced Energy, Graduate School of Frontier Sciences, The University of Tokyo

抄録

Fiber Bragg grating (FBG) sensors are usually used for the measurement of axial strain. However, when a non-axisymmetric transverse strain is applied to the FBG sensor, the reflection spectrum from the sensor splits into two peaks because of the birefringence effect. Using this phenomenon, in this research, the FBG sensor was applied to the measurement of transverse thermal residual strain in CFRP laminates. First, the FBG sensor was compressed transversely in order to investigate the deformation of the reflection spectrum due to the birefringence effect. The wave-length shifts of the two peaks in the spectrum agreed with those calculated theoretically. Then, the FBG sensor was embedded into a CFRP cross-ply laminate, and the wavelength shifts of the two peaks were measured as the temperature of the laminate was changed. From the peak wavelengths, the non-axisymmetric component of the thermal residual strain in the laminate could be obtained in consideration of the birefringence effect and the strain transfer from the laminate to the optical fiber. Furthermore, the effect of the fiber coating on the measurement sensitivity was clarified theoretically.

収録刊行物

  • 日本複合材料学会誌 = Journal of the Japan Society for Composite Materials

    日本複合材料学会誌 = Journal of the Japan Society for Composite Materials 30(5), 199-206, 2004-09-15

    一般社団法人 日本複合材料学会

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各種コード

  • NII論文ID(NAID)
    10013665945
  • NII書誌ID(NCID)
    AN00196748
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03852563
  • NDL 記事登録ID
    7092291
  • NDL 雑誌分類
    ZM16(科学技術--科学技術一般--工業材料・材料試験)
  • NDL 請求記号
    Z14-655
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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