Fatigue of glass fibre reinforced polymers for ocean energy

C. M. Ó Brádaigh, S. B. Leen

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

Abstract

A combined experimental and computational study on the fatigue of glass-fibre reinforced polymers (GFRP) is presented, with particular emphasis on the effects of water saturation, for use in ocean energy structures. The experimental characterisation consisted (i) of immersion-aging of test specimens for a period of up to two years, using a moderate accelerated aging technique, designed to simulate longer-term seawater exposure of the material, and (ii) fatigue testing of aged and unaged specimens in immersed and non-immersed conditions, with emphasis on identification of fatigue damage evolution. The computational methodology incorporates the development of a multiaxial fatigue damage user material subroutine, based on the static Puck approach, adapted for fatigue by combining (i) fatigue-induced fibre strength and modulus degradation, (ii) irrecoverable cyclic strain effects and (iii) inter-fibre fatigue. Finally the impact of water saturation on the fatigue life of a tidal turbine blade is assessed using a fatigue life model.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9780000000002
Publication statusPublished - 2014
Externally publishedYes
Event16TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS - Seville, Spain
Duration: 22 Jun 201426 Jun 2014
http://www.escm.eu.org/eccm16/assets/0205.pdf
http://www.escm.eu.org/eccm16/assets/0200.pdf

Conference

Conference16TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS
Abbreviated titleECCM16
Country/TerritorySpain
CitySeville
Period22/06/1426/06/14
Internet address

Keywords

  • Composite
  • Fatigue
  • GFRP
  • Puck

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