• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on sensors and smart structures technologies for civil, mechnical, and aerospace systems >Nano-enhanced aerospace composites for increased damage tolerance and service life damage monitoring
【24h】

Nano-enhanced aerospace composites for increased damage tolerance and service life damage monitoring

机译：纳米增强的航空航天复合材料，可提高损伤耐受性并监控使用寿命

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study deals with new generation composite systems which apart from the primary reinforcement at the typical fiber scale (～10 μm) are also reinforced at the nanoscale. This is performed via incorporation of nano-scale additives in typical aerospace matrix systems, such as epoxies. Carbon Nanotubes (CNTs) are ideal candidates as their extremely high aspect ratio and mechanical properties render them advantageous to other nanoscale materials. The result is the significant increase in the damage tolerance of the novel composite systems even at very low CNT loadings. By monitoring the resistance change of the CNT network, information both on the real time deformation state of the composite is obtained as a reversible change in the bulk resistance of the material, and the damage state of the material as an irreversible change in the bulk resistance of the material. The irreversible monotonic increase of the electrical resistance can be related to internal damage in the hybrid composite system and may be used as an index of the remaining lifetime of a structural component.
机译：这项研究针对的是新一代复合材料系统，除了在典型的纤维尺度（〜10μm）处的一次增强之外，还在纳米尺度上进行增强。这是通过在典型的航空航天基体系统（例如环氧树脂）中掺入纳米级添加剂来实现的。碳纳米管（CNT）是理想的候选材料，因为它们的极高的长宽比和机械性能使其对其他纳米级材料具有优势。结果是，即使在非常低的CNT负载下，新型复合材料系统的损伤耐受性也显着提高。通过监视CNT网络的电阻变化，既可以获取有关复合材料实时变形状态的信息，作为材料的体电阻的可逆变化，又可以获取材料的损坏状态，作为体电阻的不可逆变化。材料。电阻的不可逆的单调增加可能与混合复合系统中的内部损坏有关，并且可以用作结构部件的剩余寿命的指标。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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