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AE Activities and Fatigue Limits on Rocks under Cyclic Compressive Loading

Research Project

Project/Area Number 05452315
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 資源開発工学
Research InstitutionAkita University

Principal Investigator

YAMASHITA Shigeru  Akita University, Mining College, Professor, 鉱山学部, 教授 (90001213)

Co-Investigator(Kenkyū-buntansha) SUGIMOTO Fumio  Akita University, Mining College, Associate Professor, 鉱山学部, 助教授 (80124585)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1994: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1993: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsRock / Fatigue test / Fatigue limit / Uniaxial compression test / Acoustic emission / Yielding stress / 載荷・除荷一軸圧縮試験 / 繰り返し載荷試験
Research Abstract

In this study, fatigue and uniaxial compression tests were done on OGINO tuff, Akiyoshi marble and Kimachi sandstone with monitoring AE (acoustic emission) activity.
The yieldind stresses of three kinds of rocks are determined by Kaizer's effect, based on the results obtained with the uniaxial compression tests. Also, the fatigue limits of the rocks are estimated from the results obtained with the fatigue tests where the maximum stress takes a prescribed percentage of the uniaxial compressive strength of the rock and the minimum stress alwasys keeps about 1MPa. From the comparison of the fatigue limit with the yielding stress on each rock, it is found that the fatigue limit of the rock doesn't always correspond to its yielding stress. Accordingly, it is necessary to perform the fatigue tests in order to determine the fatigue limit of a rock.
The behavior of the upper strain during fatigue tests is similar to that during creep test and is classified into three regions that correspond to primary, secondary and tertiary creep regions in creep.
On the other hand, as the maximum stress is higher, the cumulative number of AE events is proportional to the number of the loading cycles and then specimen is failed. In case that the maximum stress is lower, AE activity becomes vigorous just prior to the failure of the specimen. The increasing point of the cumulative number of AE events doesn't correspond to the transitional point from secondary to tertiary region, and is found out in tertiary region.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 山下秀、杉本文男、赤羽茂: "疲労過程における岩石の強度・変形特性とAEの発生挙動" 資源と素材(投稿予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 杉本文男、山下秀、赤羽茂: "圧縮疲労過程における岩石の力学的性挙動について" 1995年資源・素材学会春季大会研究・業績発表講演会. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 山下秀、杉本文男、山内優、川辺金光: "大谷石のクリープ特性とクリープ過程について" 資源と素材. 110. 875-882 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] S.Yamashita,F.Sugimoto,M.Yamauchi and S.Mori: "Studies on Creep Process and Mechanism of Rock" Proc. of MMIJ/AusImm Joint Symposium,Ube. 341-350 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 山下秀、杉本文男、山内優、デンベレル・ナムスライ、山崎貴博: "堆積岩の変形破壊過程と微視的構造" 1995年資源・素材学会春季大会研究・業績発表講演会. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] S.Yamashita, F.Sugimoto and S.Akahane: "-deformation characteristics and AE activities on Rocks during Compressive Fatigue Process" Journal of the Mining and Materrial Processing of Japan. (To be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] F.Sugimoto, S.Yamashita and S.Akahane: "Mechanical Behavior of rocks during Compressive Fatigue Process" The 1995.Spring Meeting of the Mining and Material Processing Institute of Jpn.(to be publish).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] S.Yamashita, F.Sugimoto, M.Yamauchi and K.Kawabe: "Creep Behavior and Creep Process of 'ohya-stone'" Journal of the Mining and Material Processing Institute of Japan. 110-11. 875-882 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] S.Yamashita, F.Sugimoto, M.Yamauchi and S.Mori: "Studies on Creep Process and Mechanism of Rock" Proc.of MMIJ/AusIMM Joint Sym. 341-350 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] S.Yamashita, F.Sugimoto et al.: "Observation on the Micro-fracturing in Compressive Load" The 1995 Spring Meeting of the Mining and Material Processing Institute of Jpn.(to be publish).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 杉本文男、山下 秀、赤羽 茂: "圧縮疲労過程における岩石の力学的性挙動について" 1995年資源・素材学会春季大会研究・業績発表講演会. (発表予定).

    • Related Report
      1994 Annual Research Report
  • [Publications] 山下 秀、杉本文男、山内 優、デンベレル・ナムスライ、山崎貴博: "堆積岩の変形破壊過程と微視的構造" 1995年資源・素材学会春季大会研究・業績発表講演会. (発表予定).

    • Related Report
      1994 Annual Research Report
  • [Publications] 山下 秀、杉本文男、山内 優、川辺金光: "大谷石のクリープ特性とクリープ過程について" 資源と素材. 110. 875-882 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Yamashita,F.Sugimoto,M.Yamauchi and S.Mori: "Studies on Creep Process and Mechanism of Rock" Proc.of MMIJ/AusImm Joint Symposium,Ube,. 341-350 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山下 秀、杉本文男、山内 優、森 聡: "岩石のクリープ破壊過程における内部破壊の進行状況について" 1994年資源・素材学会春季大会研究・業績発表講演会. 105-106 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 杉本文男、山下 秀、赤羽 茂: "損傷を受けた砂岩の疲労特性" 1994年資源・素材学会春季大会研究・業績発表講演会. 115-116 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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