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A review of ground-based radar as a noncontact sensor for structural health monitoring of in-field wind turbines blades
Authors
Antonello
Arnold
+68 more
Azevedo
Barlas
Beganovic
Bonenberg
Carroll
Chase
Ciang
Cooperman
Das
Ebert
García Márquez
Gentile
Hameed
He
Heilmann
Howison
IDS
James
Jenn
Jensen
Kirikera
Kolawole
Li
Li
Lin
Liu
Liu
Liu
Livingstone
Loh
Luo
Luzi
Marchisio
Martinez-Luengo
Metternicht
Moll
Mukupa
Naqvi
Niknam
Ozbek
Ozbek
Ozdemir
Pieraccini
Pieraccini
Pieraccini
Prislan
Pryor
Qu
Rahman
Risø
Roberts
Rödelsperger
Saracin
Stanbridge
Söker
Tang
Tarchi
Tchakoua
Van Overschee
Van Wingerden
Wymore
Xie
Yang
Yang
Zhang
Zhang
Zhang
Zhou
Publication date
27 July 2018
Publisher
'Wiley'
Doi
Cite
Abstract
Ground-based radar (GBR) are increasingly being used either as a vibration-based or as guided-wave-based structural health monitoring (SHM) sensors for monitoring of wind turbines blades. Despite various studies mentioning the use of radar as transducer for SHM, a singular exclusive review of GBR in blade monitoring may have been lacking. Various studies undertaken for SHM of blades using GBR have largely been laboratory-based or with actual wind turbines in parked positions or focussed on the extraction of only specific condition parameters like frequency or deflection with no validation with actual expected operating data. The present study provides quantitative data that relates in-field monitoring of wind turbines by GBR with actual design operating data. As such it helps the monitoring of blades during design, testing, and operation. Further, it supports the determination of fatigue damage for in-field wind turbine blades especially those made of composite materials by way of condition parameters residuals and deflection. A review of the two GBR-SHM approaches is thus undertaken. Additionally, a case study demonstrating its practical use as a vibration-based noncontact SHM sensors is also provided. The study contributes to the monitoring of blades during design, testing, and operation. Further, it supports the determination of damage detection for in-field wind turbine blades within a 3-tier SHM framework especially those made of composite materials by way of condition parameter residuals of extracted modal frequencies and deflection. © 2018 John Wiley & Sons, Ltd
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