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An experimental study on the Charpy impact response of cracked aluminum plates repaired with GFRP or CFRP composite patches

机译:GFRP或CFRP复合片修复裂纹铝板的夏比冲击响应实验研究。

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摘要

In this study, edge-cracked aluminum plates repaired with one-sided composite patches were investigated experimentally for their response to Charpy impact test. Two different materials were used for composite patches, in one the reinforcement was woven glass-fibres while the other had woven carbon fibres as the reinforcement. Further, in each case, two lay-ups were used, viz. 3-ply and 5-ply. Also, the aluminum specimens had edge-cracks of three different lengths. In each case, the energy absorbed during the impact test, when the specimen had a crack of known length and reinforced with patches, was determined and compared with the energy absorbed during impact of the corresponding specimen without crack. It was observed that for a given crack length, the 5-ply patch of carbon fibres performed better than all other patches. For example, when the ratio of the crack length to the specimen width, i.e. 1/w is 0.5, the percentage of the absorbed energy for the specimen repaired with 5-ply carbon fibre patch is 2-times as compared to the specimen repaired with 5-ply glass-fibre reinforced patch.
机译:在这项研究中,实验研究了用单面复合贴片修复的边缘裂纹铝板对夏比冲击试验的响应。两种不同的材料用于复合材料贴片,一种是增强材料,是玻璃纤维编织布,另一种是碳纤维编织材料。此外,在每种情况下,使用两个叠层,即。 3层和5层。而且,铝样品具有三种不同长度的边缘裂纹。在每种情况下,当试样具有已知长度的裂纹并用补片加固时,确定在冲击试验过程中吸收的能量,并将其与相应的无裂纹试样的冲击过程中吸收的能量进行比较。观察到,对于给定的裂纹长度,碳纤维的5层贴片的性能优于所有其他贴片。例如,当裂纹长度与样品宽度之比即1 / w为0.5时,用5层碳纤维补片修复的样品的吸收能量的百分比是用5层碳纤维补片修复的样品的2倍。 5层玻璃纤维加固贴片。

著录项

  • 来源
    《Composite Structures》 |2009年第2期|270-274|共5页
  • 作者单位

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineenig, K.N. Toosi University of Technology, Pardis Street, Molasadra Avenue, Vanak Square, Tehran, Iran Faculty of Engineering, Kingston University, London, UK;

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineenig, K.N. Toosi University of Technology, Pardis Street, Molasadra Avenue, Vanak Square, Tehran, Iran;

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineenig, K.N. Toosi University of Technology, Pardis Street, Molasadra Avenue, Vanak Square, Tehran, Iran;

    Applied Mechanics Department, I.I.T., New Delhi, India;

  • 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

    composite patch; crack length; impact test; aluminum plate; energy absorption;

    机译:复合补丁裂纹长度碰撞测试;铝板能量吸收;

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