白浜砂岩の疲労破壊特性に及ぼす応力速度の影響に関する実験的研究 Effect of Stress Rate on Fatigue Failure Characteristics of Shirahama Sandstone

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In order to clarify the influence of stress rate on fatigue failure characteristics of Shirahama sandstone, loading and unloading on the rock specimens were repeated between lower (about 0.5MPa) and upper stresses under a constant stress rate. In addition, the behavior of P-wave velocity and the AE occurrence in the process of fatigue failure were investigated.<BR>As stress rate is slower, failure at the same upper stress ratio (upper stress/compressive strength at each constant stress rate) occurs at the smaller number of the cycles. Then, the number of the cycles to failure increases exponentially as the upper stress ratio decreases.<BR>In the fatigue process, tangent deformation modulus and lateral/axial strain ratio are significantly affected near the upper stress level by stress rate. Also, AE behavior is different with stress rate, but the effect of the stress rate doesn't appear on the behavior of P-wave velocity.<BR>The relation between the number of cycles to failure and upper stress ratio differs in stress rate. Then, to predict rock failure in fatigue test, we should utilize the shortest elapsed time to failure estimated from the relation between upper stress and time to failure at various stress rates.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 119(10), 647-654, 2003-11-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10012540254
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    6774935
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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