Fracture characterization of adhesive joints in carbon/epoxy wind turbine blades

Yi Hua, Linxia Gu

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

1 Scopus citations

Abstract

The objective of this work is to predict the fracture behavior of adhesive joints in the 4-ply carbon/epoxy wind turbine blades through finite element method. The influence of through-thickness flaw in the adhesive layer was examined. The contour integral method was used for evaluating the stress intensity factors (SIF) at the flaw tips, while the strength of the joint was assessed through the crack initiation and propagation simulation. The effect of adhesive shear modulus has also been investigated. Results suggested that the maximum stress occurred at the adhesive-shell interface and increased stress levels were observed in the case of adhesive layer with flaw. It also highlighted distinct edge effects along the thickness of the adhesive joint. Compared to the perfect adhesive, the static strength of the adhesive joint with flaw remained unchanged. Large shear modulus of the adhesive diminished the strength of the adhesive joint with the increased SIF.

Original languageEnglish (US)
Title of host publicationASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Pages725-730
Number of pages6
EditionPARTS A AND B
DOIs
StatePublished - Dec 1 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: Nov 9 2012Nov 15 2012

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A AND B
Volume6

Conference

ConferenceASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
CountryUnited States
CityHouston, TX
Period11/9/1211/15/12

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Hua, Y., & Gu, L. (2012). Fracture characterization of adhesive joints in carbon/epoxy wind turbine blades. In ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 (PARTS A AND B ed., pp. 725-730). (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 6, No. PARTS A AND B). https://doi.org/10.1115/IMECE2012-88000