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Evaluation of CFRP panels with scarf repair patches

机译:带有围巾修复贴的CFRP面板评估

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摘要

The scarf patch repair of CFRP panels has been evaluated using a test rig to statically load the panels in a square frame, clamped at the edges and loaded diagonally through pin joints. Three repair systems were used, two wet lay-ups and one prepreg system. The most consistent results were obtained with one of the wet lay-up repairs whilst the prepreg system appears to offer the greatest potential increase in load to failure. The failure load appears to be governed by the amount of buckling the repair is subjected to. Because of the buckling it was not possible to predict the failure load of repaired panels using standard test coupons. Studies on unrepaired panels containing a central hole indicated that buckling identified using photoelastic and strain gauge techniques could be predicted using finite element and empirical methods.
机译:已使用测试设备对CFRP面板的围巾修补进行了评估,以将面板静态加载到方形框架中,并夹紧在边缘并通过销钉对角线加载。使用了三种修复系统,两个湿铺层和一个预浸料系统。使用湿法上铺修补中的一种可获得最一致的结果,而预浸料系统似乎提供了最大的潜在失效载荷增加。失效负载似乎取决于维修所承受的屈曲量。由于屈曲,无法使用标准测试样板来预测修复后的面板的失效载荷。对包含中心孔的未修复面板的研究表明,可以使用有限元和经验方法预测使用光弹性和应变仪技术确定的屈曲。

著录项

  • 来源
    《Composite Structures》 |1995年第4期|p.115-122|共8页
  • 作者

    M. S. Found; M. J. Friend;

  • 作者单位

    Department of Mechanical and Process Engineering, University of Sheffield, PO Box 600, Sheffield S1 4DU, UK;

  • 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 工程材料学;
  • 关键词

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