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Quantitative Structural Health Monitoring for Damage Detection

用于损伤检测的定量结构健康监测

基本信息

批准号：
EP/E054951/1
负责人：
Paul Wilcox
金额：
$ 52.13万
依托单位：
University of Bristol
依托单位国家：
英国
项目类别：
Fellowship
财政年份：
2007
资助国家：
英国
起止时间：
2007 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FE054951%2F1
关键词：
Quantitative Structural Health Monitoring Damage

项目摘要

The objective of structural health monitoring (SHM) is to embed one or more measurement systems into a structure, such as an aeroplane or bridge, that can provide information on the current condition of the structure while it is in service. In this proposal the emphasis is on systems to detect localised damage to a structure, whether due to degradation (e.g. fatigue, corrosion) or unexpected external events (e.g. impacts). The alternative to SHM is to detect such damage using non-destructive evaluation (NDE) techniques that usually require a sensor to be scanned over the structure. The attraction for SHM over NDE is the reduction in inspection cost and the structural 'down-time' associated with inspection. However, for an SHM system to supersede an NDE procedure it is necessary for the SHM system to be able to demonstrate quantifiably equal or superior performance in terms of sensitivity to damage at all locations of interest. A key reason why SHM systems for damage detection have not progressed from research laboratories into industry is because the issue of quantifiable performance has not been satisfactorily addressed. The need to have quantifiable performance underpins all the work proposed in this Fellowship application. Two sub-projects are defined that will lead to an integrated SHM system that uses guided acoustic waves in both active and passive modalities for damage detection. A third sub-project addresses the key issue of providing a generalised performance calibration strategy that is applicable to both active and passive detection. The overall goal of the Fellowship is to provide the scientific way forward that will enable SHM systems for damage detection to make the transition from laboratory to industry.

结构健康监测 (SHM) 的目标是将一个或多个测量系统嵌入到飞机或桥梁等结构中，以提供结构在使用过程中的当前状况信息。在该提案中，重点是检测结构局部损坏的系统，无论是由于退化（例如疲劳、腐蚀）还是意外的外部事件（例如冲击）。 SHM 的替代方案是使用非破坏性评估 (NDE) 技术来检测此类损坏，该技术通常需要传感器在结构上进行扫描。与 NDE 相比，SHM 的吸引力在于降低了检查成本以及与检查相关的结构性“停机时间”。然而，要使 SHM 系统取代 NDE 程序，SHM 系统必须能够在所有感兴趣位置的损伤敏感性方面表现出可量化的相同或优越性能。用于损伤检测的 SHM 系统尚未从研究实验室发展到工业界的一个关键原因是可量化性能问题尚未得到令人满意的解决。对可量化绩效的需求是本奖学金申请中提出的所有工作的基础。定义了两个子项目，将形成一个集成 SHM 系统，该系统使用主动和被动模式的引导声波进行损伤检测。第三个子项目解决了提供适用于主动和被动检测的通用性能校准策略的关键问题。该奖学金的总体目标是提供科学的前进道路，使用于损伤检测的 SHM 系统能够从实验室过渡到工业界。