Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades

Filip Szlaszynski, Piotr Omenzetter

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

This paper numerically investigates the phenomenon of elastic wave (EW) propagation in large composite wind turbine blades and its suitability for damage detection. The study is performed using ANSYS® Mechanical finite element software on the model of NREL offshore 5MW baseline wind turbine blade. The source of elastic waves is a surface impact generating a broadband elastic wave pulse. The motion of elastic waves is illustrated in surface deformation plots and the key observations such as wave reflection, interference and scattering are addressed in discussion. The research also examines the interaction of the introduced waves with a surface crack perpendicular to the direction of wave propagation. It is concluded that medium and high frequency EWs have much higher sensitivity to this type of damage in comparison to low frequency EWs, and are argued to have a good potential for damage detection.
Original languageEnglish
Title of host publicationProceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017
PublisherSMAR
Pages1-8
Number of pages8
Publication statusPublished - 2017
EventSMAR 2017: 4th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures - ETH Zurich, Zurich, Switzerland
Duration: 13 Sep 201715 Sep 2017

Conference

ConferenceSMAR 2017
CountrySwitzerland
CityZurich
Period13/09/1715/09/17

Fingerprint

turbine blades
wind turbines
elastic waves
damage
composite materials
wave propagation
simulation
surface cracks
wave reflection
plots
low frequencies
broadband
computer programs
interference
sensitivity
pulses
scattering
interactions

Cite this

Szlaszynski, F., & Omenzetter, P. (2017). Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades. In Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017 (pp. 1-8). SMAR.

Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades. / Szlaszynski, Filip; Omenzetter, Piotr.

Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017. SMAR, 2017. p. 1-8.

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Szlaszynski, F & Omenzetter, P 2017, Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades. in Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017. SMAR, pp. 1-8, SMAR 2017, Zurich, Switzerland, 13/09/17.
Szlaszynski F, Omenzetter P. Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades. In Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017. SMAR. 2017. p. 1-8
Szlaszynski, Filip ; Omenzetter, Piotr. / Numerical simulations of medium and high frequency elastic waves for damage detection in composite wind turbine blades. Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures SMAR 2017. SMAR, 2017. pp. 1-8
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