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首页> 外文期刊>Bulletin of materials science >Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures
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Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures

机译：SMA增强剂对不同温度下GFRP复合材料层合板抗冲击性能的影响。

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Plain glass fibre-reinforced polymeric (GFRP) laminates and GFRP reinforced with randomly oriented short strips of shape memory alloy (SMA) were prepared by hand lay-up method. The SMA strip reinforcement was placed at 0.75 $ imes$ thickness of the laminate with weight fractions of 2, 4 and 6%. The specimens were exposed to drop weight impact test and the experiments were conducted at a constant impact velocity of 2.80 m s$^{a?’1}$ with different test temperatures such as 303, 333 and 363 K. The impact damage area was evaluated using lighting technique and fracture response was analysed using scanning electron microscopic (SEM) images. Absorption of impact energyand damage area due to low velocity impact were calculated. It was observed that with the higher temperature, the SMA/GFRP laminates exhibit marginally-enhanced damage resistance compared to the plain GFRP laminates. Also, addition of SMA reinforcement was not contributing much to the impact resistance at higher temperature.
机译：通过手工铺层法制备了普通玻璃纤维增​​强聚合物（GFRP）层压板和形状记忆合金（SMA）随机定向的短条增强的GFRP。将SMA条增强材料放置在层压材料的厚度为0.75％，重量分数为2、4和6％的层压板上。将样品置于落锤冲击试验中，并在2.80 ms $ ^ {a？'1} $的恒定冲击速度下，在303、333和363 K等不同测试温度下进行实验。评估了冲击破坏面积使用照明技术，并使用扫描电子显微镜（SEM）图像分析断裂响应。计算了低速冲击引起的冲击能量吸收和损伤面积。观察到，在较高温度下，与普通GFRP层压板相比，SMA / GFRP层压板显示出略微增强的抗损伤性。另外，添加SMA增强剂对高温下的抗冲击性没有太大贡献。

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