GFRP一方向板の電気抵抗に及ぼす負荷履歴の効果 Effects of Loading History in Electric Resistance in CFRP Unidirectional Composites

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著者

    • 黄木 景二 OGI Keiji
    • 愛媛大学工学部機能材料工学科 Department of Materials Science and Engineering, Faculty of Engineering, Ehime University

抄録

The effect of loading history on the electric resistance in CFRP unidirectional composites was experimentally investigated. First, monotonic tensile tests were conducted for on-axis and off-axis unidirectional specimens to measure the change in the electric resistance together with strain up to failure. The initial gage factor was theoretically derived from piezoresistivity as a function of the off-axis angle and was compared with the experimental results. Next, loading/unloading tensile tests as well as fatigue tests at low load levels were performed to measure the change in the electric resistance due to loading history. It was found that the electric resistance-strain curves for monotonic tensile loading exhibit nonlinear behavior after the linear region, and that the gage factor becomes negative at high strains for some off-axis directions. The initial gage factor becomes the maximum at the angle of 12 degrees according to the present model, and the predicted gage factors are in reasonably good agreement with the experimental ones. The permanent change in the electric resistance, which is not always ascribed to damage, was observed in all the directions after the loading/unloading as well as the fatigue loading.

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 29(6), 217-225, 2003-11-15

    JAPAN SOCIETY FOR COMPOSITE MATERIALS

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被引用文献:  3件中 1-3件 を表示

各種コード

  • NII論文ID(NAID)
    10012517559
  • 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
    6764796
  • 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  CJP引用  NDL  J-STAGE 
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