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.

疲劳是机械结构（例如飞机，钢桥和汽油箱）的无处不在且严重的关注。服务中组件疲劳裂纹的启动和生长在人类安全方面构成了一个很大的问题。在加拿大，由于机械载荷，大温度波动和化学腐蚀的协同作用，疲劳问题可能更加突出和加剧。使用非破坏性测试（NDT）技术的现场检查涉及广泛的人类参与，并且缺乏对结构健康的持续监测。除了间歇性的NDT部署外，开发一种敏感的疲劳裂纹传感器将有很大的好处，该传感器允许在早期阶段连续检测疲劳裂纹，以同时为多个地点进行多个站点。该项目将集中于纳米材料的疲劳传感器的开发，从而使早期检测和长期监测疲劳裂缝的长期监测。将探索多种低维纳米材料及其包含方法。纳米基碱材料界面的作用将被解密。通过这些研究发展的理解将在项目中应用于设计具有高灵敏度和可靠性的疲劳传感器。 这个项目的成功结论将使我们的行业合作伙伴Laboratoire d'Essai Mequaltech Inc.将研究项目中创建的发现和设计转化为具有高灵敏度和可靠性的完全基于纳米材料的疲劳传感器。这将使Laboratoire d'Essai Mequaltech Inc.能够在国际结构健康监测市场中更成功地竞争。其他好处包括培训工程专业的学生使用技术疲劳设备和软件包的使用。