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Effect of hygrothermal aging on the quasi-static behaviour of CFRP joints varying the overlap length

机译:湿热老化对CFRP接头重叠长度的准静态行为的影响

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摘要

Adhesively bonded joints with composite substrates are crucial for the manufacture of lightweight structural components for the automotive industry. However, the safety of the vehicles must still be ensured after hygrothermal aging of both composite substrates and adhesive, as adverse conditions such as moisture and temperature will be a constant during a vehicle lifecycle. This work studies the influence of hygrothermal aging and temperature on the quasi-static behaviour of adhesive joints made with unidirectional composite substrates and a crash resistant adhesive using different overlap lengths. A complementary numerical simulation was performed to model both the water uptake processes and the failure process of moisture affected materials. Both the simulation and the experimental data showed increased susceptibility to delamination failure induced by water absorption in the composite and changes in the adhesive properties.
机译:具有复合基材的胶粘接头对于制造汽车行业的轻质结构部件至关重要。然而,在复合基材和粘合剂都经过湿热老化之后,仍必须确保车辆的安全性,因为不利条件(例如水分和温度)在车辆生命周期中将保持恒定。这项工作研究了湿热老化和温度对使用单向复合基材和抗撞粘合剂的重叠长度不同的粘合剂接头的准静态行为的影响。进行了补充的数值模拟,以对水分吸收材料的吸水过程和破坏过程进行建模。仿真和实验数据均表明,复合材料中的吸水和粘合性能的变化导致对分层破坏的敏感性增加。

著录项

  • 来源
    《Composite Structures》 |2019年第4期|451-462|共12页
  • 作者单位

    Inst Ciencia & Inovacao Engn Mecan & Engn Ind INE, Rua Dr Roberto Frias, P-4200465 Porto, Portugal;

    Inst Ciencia & Inovacao Engn Mecan & Engn Ind INE, Rua Dr Roberto Frias, P-4200465 Porto, Portugal;

    Inst Ciencia & Inovacao Engn Mecan & Engn Ind INE, Rua Dr Roberto Frias, P-4200465 Porto, Portugal;

    Univ Porto, Fac Engn FEUP, Dept Engn Mecan, Rua Dr Roberto Frias, P-4200465 Porto, Portugal;

  • 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

    Hygrothermal aging; CFRP; Quasi-static; Numerical simulation; Overlap length;

    机译:湿热老化;CFRP;拟静态;数值模拟;重叠长度;

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