Lightning-strike-induced heat transfer in glass fiber polymer matrix composite blades

Y. Wang, O. I. Zhupanska

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The extent of thermal damage in the glass fiber reinforced composite blade is highly dependent on the severity of the lightning current, which also determines the mechanism of lightning-strike-induced heat transfer in the composite. Lightning attachment at the electrically non-conductive glass fiber reinforced polymer (GFRP) composite surface may come as a direct heat injection. However, if the electric field at the attachment point is sufficient, the breakdown of the GFRP composite occurs. In this case, in addition to the direct heat injection at the surface, Joule heating will be produced in the newly conductive glass fiber reinforced composite. Therefore, it is crucial to determine whether dielectric breakdown can occur prior to formulating the problem. In this work, lightning-strike induced heat transfer in a GFRP composite wind turbine blade is analyzed. First, several models are employed to estimate the electric field in the vicinity of a wind turbine blade to determine if dielectric breakdown occurs. The wind turbine blade under consideration is the Sandia 100-meter All-glass Baseline Wind Turbine Blade (SNL 100-00). Results show that the dielectric breakdown of the composite blade is not likely to occur for a lightning stepped leader under three lightning protection levels (LPL I, LPL II and LPL III). Therefore, only the direct heat injection problem at the composite blade surface is considered, and the nonlinear transient heat transfer problem for a layered temperature-dependent GFRP composite panel is solved using finite element analysis.

Original languageEnglish (US)
Title of host publicationProceedings of the American Society for Composites - 30th Technical Conference, ACS 2015
EditorsXinran Xiao, Dahsin Liu, Alfred Loos
PublisherDEStech Publications
ISBN (Electronic)9781605952253
StatePublished - 2015
Externally publishedYes
Event30th Annual Technical Conference of the American Society for Composites, ASC 2015 - East Lansing, United States
Duration: Sep 28 2015Sep 30 2015

Publication series

NameProceedings of the American Society for Composites - 30th Technical Conference, ACS 2015

Conference

Conference30th Annual Technical Conference of the American Society for Composites, ASC 2015
CountryUnited States
CityEast Lansing
Period9/28/159/30/15

ASJC Scopus subject areas

  • Ceramics and Composites

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