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The Transverse Crack Tension test revisited: An experimental and numerical study

机译:重新探讨横向裂纹拉伸试验:实验和数值研究

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摘要

Several problems arise when measuring the mode II interlaminar fracture toughness using a Transverse Crack Tension specimen; in particular, the fracture toughness depends on the geometry of the specimen and cannot be considered a material parameter. A preliminary experimental campaign was conducted on TCTs of different sizes but no fracture toughness was measured because the TCTs failed in an unacceptable way, invalidating the tests. A comprehensive numerical and experimental investigation is conducted to identify the main causes of this behaviour and a modification of the geometry of the specimen is proposed. It is believed that the obtained results represent a significant contribution in the understanding of the TCT test as a mode II characterization procedure and, at the same time, provide new guidelines to characterize the mode II crack propagation under tensile loads. (C) 2016 Elsevier Ltd. All rights reserved.
机译:使用横向裂纹拉伸试样测量II型层间断裂韧性时会出现一些问题。特别是,断裂韧性取决于样品的几何形状,不能视为材料参数。对不同尺寸的TCT进行了初步的试验,但未测量到断裂韧性,因为TCT以无法接受的方式失败,使测试无效。进行了全面的数值和实验研究,以确定这种现象的主要原因,并提出了对试样几何形状的修改。据信,所获得的结果代表了对作为模式II表征程序的TCT测试的理解的重大贡献,同时,为表征在拉伸载荷下的模式II裂纹扩展提供了新的指导原则。 (C)2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Composite Structures》 |2016年第12期|144-159|共16页
  • 作者单位

    Univ Palermo, DICAM, Viale Sci, I-90128 Palermo, Italy;

    Univ Palermo, DICGIM, Viale Sci, I-90128 Palermo, Italy;

    INEGI, Rua Dr Roberto Frias,400, P-4200465 Oporto, Portugal|Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT9 5AH, Antrim, North Ireland;

    Delft Univ Technol, Fac Civil Engn & Geosci, Sect Struct Mech, POB 5048, NL-2600 GA Delft, Netherlands;

    Univ Palermo, DICAM, Viale Sci, I-90128 Palermo, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Delamination; Fracture toughness; Numerical analysis; Experimental methods;

    机译:脱层断裂韧性数值分析实验方法;

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