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Structural health monitoring of composite wind turbine blades: challenges, issues and potential solutions

机译：复合材料风力涡轮机叶片的结构健康监测：挑战，问题和潜在解决方案

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摘要

Wind turbine (WT) blades are vulnerable to failure as they are exposed to direct harsh environment, suffering constantly varying loads by wind and cyclic fatigue load due to self-weight, experiencing extreme temperature and humidity changes, erosion and corrosion. As a consequence, blades show high failure rate and share significant downtime, which highlight the significance and essentiality of the research, development and application of blade structural health monitoring (SHM) techniques. To fulfil reliable SHM of WT blades, much effort has been spent in the past years as reported in the literature. However, to date, how to realise reliable WT blade SHM is still an open question. The previous reviews enumerate the non-destructive testing techniques that are potentially applicable to blade SHM, but they fail to indicate which technique is most suitable for blade SHM and how to implement reliable SHM of a WT blade. To fill this gap, this study is geared toward to investigate the pros and cons of existing blade SHM techniques and following which, a newly developed blade SHM technique that is effective in both damage detection and fault location is discussed.
机译：风力涡轮机（WT）叶片暴露在直接的恶劣环境中很容易发生故障，由于自重而承受着不断变化的风载荷和周期性疲劳载荷，承受着极端的温度和湿度变化，腐蚀和腐蚀。结果，叶片显示出很高的故障率并共享大量的停机时间，这突出了叶片结构健康监测（SHM）技术的研究，开发和应用的重要性和重要性。为了实现WT叶片的可靠SHM，如文献所报道，在过去的几年中已经花费了很多努力。然而，迄今为止，如何实现可靠的WT刀片SHM仍然是一个悬而未决的问题。先前的评论列举了可能适用于刀片SHM的非破坏性测试技术，但未能指出哪种技术最适合刀片SHM以及如何实现WT刀片的可靠SHM。为了填补这一空白，本研究旨在研究现有叶片SHM技术的利弊，然后，讨论了一种新开发的叶片SHM技术，该技术在损伤检测和故障定位方面均有效。

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