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Distributed Piezo-Optical Active Sensing for Damage Assessment in Composite Materials for Aerospace Application

用于航空航天应用复合材料损伤评估的分布式压电光学主动传感

基本信息

批准号：
1830576
负责人：
金额：
--
依托单位：
University of Manchester
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1830576
关键词：
Distributed Piezo Optical Active Sensing

项目摘要

This project brings together supervisors with complementary research interests with the overarching aim of developing distributed piezo-optical active sensing for damage assessment in composite structures for aerospace applications. Structural health monitoring (SHM) of material performance is expected to be a key resource in continued safe, efficient and economically viable operation. However, development of new or advancement of SHM techniques relies on knowledge of the impact of material state on detection signals. Models that can predict the interaction of SHM signals with relevant material status could provide optimization or new directions for SHM development and deployment.Flaws may have been initiated in the composite structures due to material degradation resulting from service conditions and environmental attack or introduced during the manufacturing process. Though SHM techniques are being developed to detect service-induced flaws (e.g., delamination, disbonds, resin cracks.) in limited-access locations, majority of the techniques have to inspect the entire structural components in order to detect the presence of flaws, which is time-consuming and costly. A consensus approach that can identify "hot spots" in the subject component for efficient inspection has not yet been established.The project is highlighted with novel technologies including structural component evaluation using combined acoustic (passive) and ultrasonic (active) piezoelectric sensing, fibre Bragg gratings and distributed optical strain sensors. Together the proposed method can provide a sensing system that can timely interrogate the structural integrity for condition assessment and diagnosis of composite components and provide a game-changing technique of long-term online monitoring of critical structures

该项目将具有互补研究兴趣的监督者聚集在一起，总体目标是开发分布式压电光有源传感，用于航空航天应用的复合材料结构的损伤评估。材料性能的结构健康监测(SHM)有望成为持续安全、高效和经济可行的运营的关键资源。然而，新的SHM技术的发展或进步依赖于对材料状态对检测信号的影响的了解。能够预测舒适性信号与材料状态相互作用的模型可以为舒适性材料的开发和部署提供优化或新的方向。由于使用条件和环境攻击导致的材料劣化或在制造过程中引入的规则可能已经在复合材料结构中启动。尽管SHM技术正在被开发来检测服务引起的缺陷(例如，分层、脱粘、树脂裂缝)。在通道受限的地方，大多数技术都必须检查整个结构部件，以检测是否存在缺陷，这既耗时又昂贵。目前还没有建立一种共识的方法来识别受试者组件中的“热点”以进行有效的检查。该项目重点介绍了新技术，包括使用声(被动)和超声波(主动)压电传感、光纤布拉格光栅和分布式光学应变传感器进行结构组件评估。所提出的方法可以为复合材料构件的状态评估和诊断提供一个能够及时询问结构完整性的传感系统，并提供一种改变游戏规则的关键结构的长期在线监测技术