• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Real-time in situ sensing of damage evolution in advanced fiber composites using carbon nanotube networks
【24h】

Real-time in situ sensing of damage evolution in advanced fiber composites using carbon nanotube networks

机译：使用碳纳米管网络实时原位检测高级纤维复合材料中的损伤演化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Developments in producing nanostructured materials with novel properties have opened up new opportunities in which unique functionality can be added to existing material systems. As advanced fiber composites are utilized more frequently in primary structural applications there is a key challenge to enhance the performance and reliability while reducing maintenance. As a consequence there is tremendous scientific and technical interest in the development of techniques for monitoring the health of composite structures where real-time sensing can provide information on the state of microstructural damage. In this research we utilize electrically conductive networks of carbon nanotubes as in situ sensors for detecting damage accumulation during cyclic loading of advanced fiber composites. Here we show that, by combining load and strain measurements in real-time with direct current electrical resistance measurements of the carbon nanotube network, insight can be gained toward the evolution and accumulation of damage. The resistance/strain relations show substantial hysteresis due to the formation and opening/closing of cracks during cyclic loading. Through interpreting the resistance response curves we identify a parameter that may be utilized as a quantitative measure of damage.
机译：生产具有新颖特性的纳米结构材料的发展开辟了新的机会，其中可以将独特的功能添加到现有的材料系统中。由于高级纤维复合材料在主要结构应用中的使用频率更高，因此在降低维护成本的同时提高性能和可靠性是一项关键挑战。结果，在监视复合结构健康状况的技术的开发中，科学和技术引起了极大的兴趣，其中实时感测可以提供有关微结构破坏状态的信息。在这项研究中，我们利用碳纳米管的导电网络作为原位传感器，以检测高级纤维复合材料循环加载过程中的损伤累积。在这里，我们表明，通过将实时的载荷和应变测量与碳纳米管网络的直流电阻测量相结合，可以了解破坏的演变和累积。由于在周期性载荷期间裂纹的形成和打开/闭合，电阻/应变关系显示出很大的磁滞。通过解释电阻响应曲线，我们确定了可以用作损伤定量度量的参数。

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