STRUCTURAL HEALTH MONITORING AND LIFE PROGNOSIS OF AIRCRAFT COMPOSITE STRUCTURES

飞机复合结构的结构健康监测和寿命预测

• 批准号: RGPIN-2014-06411
• 负责人: Suleman, Afzal
• 金额: $ 3.64万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=690153
• 关键词: STRUCTURAL; HEALTH; MONITORING; LIFE; PROGNOSIS

THE NEED:*Air transport is increasingly becoming more accessible to a greater number of people who can afford traveling by air, both inside and outside Canada, for leisure and business purposes. More to the point, Canada's air transportation system was used by more than 120 million passengers in 2012, an increase of 3.6% over 2011. At its Airports Canada 2013 Conference & Exhibition, the Canadian Airports Council unveiled its first economic impact study in more than a decade. Canada's air transportation industry had a $34.9-billion economic footprint in 2012, supported 405,000 jobs and personal income of more than $17 billion and federal taxation of more than $7 billion. This is in addition to broader economic benefits, such as supporting the livelihoods of Canadians in remote regions, economic development in the north and in the natural resources sector, and enhancing business operations and efficiency. Over the next decade, the sector forecasts that both passenger and freight traffic is expected to increase at an average of 5% p.a., with freight being expected to increase slightly more - both significantly above global GDP growth. In air transport terms, this implies a doubling of traffic about every 16 years. Thus, it is evident that environmental requirements, such as noise impact, emissions and safety, will play a dominant role in future transport aircraft development, becoming a driving force for new metrics in transportation. The direct greening design criteria are represented by 80% cut in NOx emissions, halving perceived aircraft noise and CO2 emissions per passenger-Km, and reducing accident rate by 80% through novel configurations, weight savings, improved manufacturing processes and products, energy efficient propulsion systems, and robust and reliable condition based maintenance techniques. **PROPOSED PROGRAM*The proposal outlines a research program to improve the performance of complex multidisciplinary engineering systems through advances in mathematical and computational models, and experimental methods. The primary objective is to connect emerging mathematical models and enabling technologies with new designs and concepts of operations to achieve "Leaner, Greener and Safer" Transportation, with emphasis on aerospace systems. **The research focuses on the Structural Health Management of advanced fiber reinforced polymer aircraft composite structures. It is based on the assessment and integration of three SHM methodologies including ultrasonic Lamb waves, fiber optic sensors and vibration-based techniques. A unified structural health monitoring approach is proposed. More specifically, the research will focus on the development of signal processing techniques and algorithms for identifying and detecting damages in composite structures using proposed SHM methodologies (Lamb waves and vibration based with embedded optical fiber), the comparison of FBG sensors performance with Lamb wave and vibration based techniques with the purpose of developing a unified SHM approach, and the development of usage monitoring techniques to predict the remaining useful life of composite structures using bonded and/or embedded fiber optic sensors where the composite structures include plates with open holes and bonded joints and plates with rivets. Finally, in order to make the embedded systems autonomous, energy harvesting techniques using piezoelectric transducers will also be explored.**BENEFITS*Structural Health Monitoring technology in the framework of a Condition based Maintenance philosophy will allow time and cost reduction of airframe maintenance operations. More specifically, the proposed research program will achieve reduced aircraft operating costs and improved aircraft safety and security.

需求：*由于休闲和商业目的，许多人越来越多的人变得越来越容易接触。更重要的是，2012年，超过1.2亿乘客使用了加拿大的航空运输系统，比2011年增长了3.6％。在加拿大机场2013会议和展览会上，加拿大机场委员会推出了其在超过以上的首个经济影响研究十年。加拿大的航空运输业在2012年拥有349亿美元的经济足迹，为405,000个就业机会和个人收入超过170亿美元，联邦税收超过70亿美元。这是对更广泛的经济利益的补充，例如支持偏远地区加拿大人的生计，北部和自然资源部门的经济发展，以及提高业务运营和效率。在接下来的十年中，该行业预测，乘客和货运流量的平均为5％，预计货运将略有增长 - 显着高于全球GDP增长。在航空运输方面，这意味着大约每16年的交通量增加了一倍。因此，很明显，环境要求（例如噪声影响，排放和安全性）将在未来的运输飞机开发中起主要作用，成为运输新指标的推动力。直接的绿色设计标准以NOX排放中的80％削减表示，每位乘客km感知到的飞机噪声和CO2排放量减半，并通过新颖的配置，节省重量，改善制造过程和产品，能源有效的推进，使事故发生率降低80％系统，以及鲁棒和可靠的基于条件的维护技术。 **提出的计划*该提案概述了一项研究计划，旨在通过数学和计算模型以及实验方法的进步来提高复杂的多学科工程系统的性能。 主要目的是将新兴的数学模型和使技术与新设计和操作概念联系起来，以实现“更精细，更绿，更安全”的运输，并重点是航空航天系统。 **该研究的重点是高级纤维增强聚合物飞机复合结构的结构健康管理。它基于对三种SHM方法的评估和整合，包括超声波波波，光纤传感器和基于振动的技术。提出了一种统一的结构健康监测方法。更具体地说，该研究将着重于使用拟议的SHM方法（基于嵌入式光纤的羔羊波和振动），将FBG传感器的性能与羔羊波和羊肉波和和和，使用羊肉波和，振动的比较基于振动的技术，目的是开发统一的SHM方法，并开发使用使用键和/或嵌入式光纤传感器的复合结构的剩余有用寿命，其中复合结构包括带有开放孔和键合接头的平板和带有铆钉的盘子。最后，为了使嵌入式系统自动构成，还将探索使用压电传感器的能源收集技术。更具体地说，拟议的研究计划将降低飞机运营成本，并改善飞机安全和保障。