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首页> 外文期刊>Journal of Applied Physics >A method to measure fracture toughness using indentation in REBa_2Cu_3_O_(7-δ) superconductor single crystals
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A method to measure fracture toughness using indentation in REBa_2Cu_3_O_(7-δ) superconductor single crystals

机译:REBa_2Cu_3_O_(7-δ)超导体单晶中压痕法测量断裂韧性的方法

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摘要

A method is proposed to estimate indentation fracture toughness based on the critical load for crack nucleation calculated by the derivative of the loading curve. This method is applied to REBa_2Cu_3O_(7-δ) superconductor single crystals based on xenotime, where is difficult to observe well defined radial crack lengths due to its lamellar structure. The indentation fracture toughness agrees well with that obtained from the traditional method based on radial crack propagation. The proposed procedure is an alternative technique to estimate indentation fracture toughness without the necessity of measuring radial cracks lengths while keeping the advantages of the traditional method.
机译:提出了一种基于载荷曲线导数计算出的裂纹成核的临界载荷来估算压痕断裂韧性的方法。该方法适用于基于Xenotime的REBa_2Cu_3O_(7-δ)超导体单晶,由于其层状结构,很难观察到清晰的径向裂纹长度。压痕断裂韧度与基于径向裂纹扩展的传统方法获得的压痕断裂韧度非常吻合。所提出的程序是一种替代方法,可以在不保留传统方法优点的情况下,无需测量径向裂纹长度即可估计压痕断裂韧性。

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  • 来源
    《Journal of Applied Physics》 |2011年第10期|p.103504.1-103504.5|共5页
  • 作者单位

    Universidade Federal de Santa Catarina, Centro de Engenharia da Mobilidade, Campus Universitdrio, Bairro Bom Retiro, Caixa Postal 246, 89.219-905, Joinville, Santa Catarina, Brazil;

    Universidade Estadual de Ponta Grossa, Departamento de Fisica, Av. Gen. Carlos Cavalcanti 4748, Campus de Uvaranas, 84.030-000, Ponta Grossa, Parana, Brazil;

    Universidade Estadual de Ponta Grossa, Departamento de Fisica, Av. Gen. Carlos Cavalcanti 4748, Campus de Uvaranas, 84.030-000, Ponta Grossa, Parana, Brazil;

    Universidade Estadual de Ponta Grossa, Departamento de Fisica, Av. Gen. Carlos Cavalcanti 4748, Campus de Uvaranas, 84.030-000, Ponta Grossa, Parana, Brazil;

    Universidade Federal do Parana, Departamento de Fisica, Caixa Postal 19044, 81531-990, Curitiba, Parana, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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