Nanomaterial based fatigue crack sensing

基于纳米材料的疲劳裂纹传感

• 批准号: 568664-2021
• 负责人: Filleter, TobinWTW
• 金额: $ 1.75万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=759565
• 关键词: Nanomaterial; based; fatigue; crack; sensing

Fatigue is a ubiquitous and serious concern in mechanical structures, such as aircrafts, steel bridges, and gas tanks. The initiation and growth of fatigue cracks of components in service pose a great issue on human safety. In Canada, the fatigue issues can be more prominent and exacerbated due to the synergistic effect of mechanical loading, large temperature fluctuation, and chemical corrosion. On-site inspection using non-destructive testing (NDT) techniques involves extensive human involvement and lacks continuous monitoring of the structural health. In addition to the intermittent NDT deployment, it will be of great benefit to develop a sensitive fatigue crack sensor that allows continuous detection of fatigue cracks at its early stage for multiple sites simultaneously.The project will focus on the development of nanomaterial-based fatigue sensors that allow early detection and long-term monitoring of fatigue cracks. Multiple low-dimensional nanomaterials and their inclusion methods will be explored. The role of the nanofiller-base material interfaces will be deciphered. The understanding developed through these studies will be applied within the project to design fatigue sensors with high sensitivity and reliability. A successful conclusion to this project will enable our industry partner Laboratoire d'essai Mequaltech Inc. to translate the findings and designs created within the research project into fully operational nanomaterial-based fatigue sensors with high sensitivity and reliability. This will allow Laboratoire d'essai Mequaltech Inc. to compete more successfully in the international market for structural health monitoring. Additional benefits include the training of engineering students on the use of technical fatigue equipment and software packages.

疲劳是飞机、钢桥和储气罐等机械结构中普遍存在的严重问题。使用中部件疲劳裂纹的萌生和扩展对人身安全构成重大问题。在加拿大，由于机械载荷、大的温度波动和化学腐蚀的协同作用，疲劳问题更加突出和加剧。使用无损检测 (NDT) 技术的现场检查需要大量人员参与，并且缺乏对结构健康状况的持续监测。除了间歇性无损检测部署外，开发一种敏感的疲劳裂纹传感器将大有裨益，该传感器可以同时对多个站点进行早期阶段的疲劳裂纹连续检测。该项目将重点开发基于纳米材料的疲劳传感器可以对疲劳裂纹进行早期检测和长期监测。将探索多种低维纳米材料及其包合方法。纳米填料-基材料界面的作用将被解读。通过这些研究形成的理解将应用于该项目中，以设计具有高灵敏度和可靠性的疲劳传感器。 该项目的成功完成将使我们的行业合作伙伴 Laboratoire d'essai Mequaltech Inc. 能够将研究项目中的发现和设计转化为具有高灵敏度和可靠性、完全可操作的基于纳米材料的疲劳传感器。这将使 Laboratoire d'essai Mequaltech Inc. 在结构健康监测的国际市场上更加成功地竞争。其他好处包括对工程专业学生进行技术疲劳设备和软件包使用方面的培训。