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Low-temperature effect on the impact and flexural behaviour of basalt composite laminates

机译：对玄武岩复合层压板的冲击和弯曲行为的低温影响

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摘要

Epoxy based laminates reinforced with woven basalt fibres have been manufactured and characterized by quasi-static mechanical tests and low-velocity impact tests. Samples were prepared by infusion of 16 plies of basalt under pre-optimized conditions. All the interlaminar shear strength, flexural and impact tests were carried out at room temperature, -25 degrees C and -50 degrees C to investigate the effect of temperature on the mechanical characteristics and the impact damage onset and propagation. Ultrasonic technique were adopted to provide information on the shape and the extent of the internal damage. The final aim was to be able to predict impact energy and delamination under different temperature conditions and to assess the influence of the resin matrix stiffening at low temperature on the composite behaviour. Results show that at low temperature due to the stiffening of the resin matrix, the composite tested is more resistant and less deformable. It is interesting since, at low temperatures, it is more straightforward the damage propagation. In particular, ILSS and flexural tests show a maximum increase of 39% and 12.78% respectively at T = -50 degrees C compared to the value at room temperature. A delamination area increase of wholly 40% at T = -50 degrees C, is detected.
机译：通过准合成玄武岩纤维增强的环氧基础层压材料已经制造，并通过准静态机械测试和低速冲击试验表征。通过在预优化条件下输注16层玄武岩制备样品。所有层间剪切强度，弯曲和冲击试验在室温下进行 - 25摄氏度和-50℃，以研究温度对机械特性的影响和冲击损伤发作和繁殖。采用超声波技术提供了关于内部损伤的形状和范围的信息。最终目的是能够在不同温度条件下预测冲击能量和分层，并评估在低温下对复合行为的影响下树脂基质加固的影响。结果表明，由于树脂基质的加强，在低温下，复合材料测试更耐耐力，更可变形。它很有趣，因为在低温下，它更加直接地损坏传播。特别地，与室温下的值相比，ILSS和弯曲试验显示在T = -50℃下的最大增加39％和12.78％。检测到在T = -50摄氏度下增加40％的分层区域。

著录项

  • 来源
    《Composite Structures》 |2020年第10期|112607.1-112607.8|共8页
  • 作者

    Ricciardi M. R.; Papa I; Impero F.; Langella A.; Lopresto V; Antonucci V;

  • 作者单位

    CNR Inst Polymers Composites & Biomat I-80078 Naples Italy;

    Univ Naples Federico II Dept Chem Mat & Prod Engn I-80125 Naples Italy;

    Univ Naples Federico II Dept Chem Mat & Prod Engn I-80125 Naples Italy;

    Univ Naples Federico II Dept Chem Mat & Prod Engn I-80125 Naples Italy;

    Univ Naples Federico II Dept Chem Mat & Prod Engn I-80125 Naples Italy;

    CNR Inst Polymers Composites & Biomat I-80078 Naples 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

    Basalt; Low-velocity impact; Flexural tests; Composite laminates; Low temperature;

    机译：玄武岩;低速冲击;弯曲试验;复合层压板;低温;

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