• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >Compression after Impact Behaviour and Failure Analysis of Nanosilica-Toughened Thin Epoxy/GFRP Composite Laminates
【2h】

Compression after Impact Behaviour and Failure Analysis of Nanosilica-Toughened Thin Epoxy/GFRP Composite Laminates

机译：纳米二氧化硅增韧的薄环氧树脂/ GFRP复合层压板的冲击行为后的压缩和失效分析

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Nanosilica particles were utilized as secondary reinforcement to enhance the strength of the epoxy resin matrix. Thin glass fibre reinforced polymer (GFRP) composite laminates of 3 ± 0.25 mm were developed with E-Glass mats of 610 GSM and LY556 epoxy resin. Nanosilica fillers were mixed with epoxy resin in the order of 0.25, 0.5, 0.75 and 1 wt% through mechanical stirring followed by an ultrasonication method. Thereafter, the damage was induced on toughened laminates through low-velocity drop weight impact tests and the induced damage was assessed through an image analysis tool. The residual compression strength of the impacted laminates was assessed through compression after impact (CAI) experiments. Laminates with nanosilica as secondary reinforcement exhibited enhanced compression strength, stiffness, and damage suppression. Results of Fourier-transform infrared spectroscopy revealed that physical toughening mechanisms enhanced the strength of the nanoparticle-reinforced composite. Failure analysis of the damaged area through scanning electron microscopy (SEM) evidenced the presence of key toughening mechanisms like damage containment through micro-cracks, enhanced fiber-matrix bonding, and load transfer.
机译：纳米二氧化硅颗粒被用作辅助增强剂以增强环氧树脂基体的强度。开发了3±0.25 mm的薄玻璃纤维增​​强聚合物（GFRP）复合层压板，并使用610 GSM和LY556环氧树脂制成的E型玻璃毡。通过机械搅拌，随后超声处理，将纳米二氧化硅填料与环氧树脂以0.25、0.5、0.75和1wt％的顺序混合。此后，通过低速落锤冲击试验在增韧的层压板上诱发损伤，并通过图像分析工具评估引起的损伤。冲击层压材料的残余抗压强度通过冲击后压缩（CAI）实验评估。以纳米二氧化硅为辅助增强材料的层压板表现出增强的压缩强度，刚度和损伤抑制能力。傅立叶变换红外光谱的结果表明，物理增韧机制增强了纳米颗粒增强复合材料的强度。通过扫描电子显微镜（SEM）对损坏区域进行的失效分析表明，存在关键的增韧机制，例如通过微裂纹控制损坏，增强纤维-基体粘结以及负载转移。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号