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Effects of variable amplitude fatigue on delamination and crack growth rate models

Load history effects in fatigue-driven delamination in fibre-reinforced polymer composites are neglected in state-of-the-art non-interaction models although this assumption highly underestimates the delamination growth under variable amplitude (VA) loading. A new phenomenon called “transient delamination growth” has been observed in recent VA fatigue experiments by the authors. This phenomenon is a transient phase with a significantly increased crack growth rate that follows load amplitude changes in VA load spectra. In this presentation the transient delamination growth is characterised from block loading experiments and the phenomenological behaviours are integrated in a new crack growth rate (CGR) model for prediction of delamination under multi-level block loading

Universitat de Girona. Grup de Recerca en Anàlisi i Materials Avançats per al Disseny Estructural (AMADE)

Author: Jensen, Simon M.
Carreras Blasco, Laura
Bak, Brian Lau Verndal
Lequesne, Cedric
Lindgaard, Esben
Date: 2023 May 31
Abstract: Load history effects in fatigue-driven delamination in fibre-reinforced polymer composites are neglected in state-of-the-art non-interaction models although this assumption highly underestimates the delamination growth under variable amplitude (VA) loading. A new phenomenon called “transient delamination growth” has been observed in recent VA fatigue experiments by the authors. This phenomenon is a transient phase with a significantly increased crack growth rate that follows load amplitude changes in VA load spectra. In this presentation the transient delamination growth is characterised from block loading experiments and the phenomenological behaviours are integrated in a new crack growth rate (CGR) model for prediction of delamination under multi-level block loading
Format: application/pdf
Citation: info:eu-repo/semantics/reference/hdl/10256.1/7245
Document access: http://hdl.handle.net/10256/23115
Language: eng
Publisher: Universitat de Girona. Grup de Recerca en Anàlisi i Materials Avançats per al Disseny Estructural (AMADE)
Rights: Tots els drets reservats
Subject: Assaigs de materials -- Congressos
Materials -- Testing -- Congresses
Materials compostos -- Deslaminatge -- Congressos
Composite materials -- Delamination -- Congresses
Assaigs de materials -- Mètodes de simulació -- Congressos
Materials --Testing -- Simulation methods -- Congresses
Materials laminats -- Fatiga -- Congressos
Laminated materials -- Fatigue -- Congresses
Title: Effects of variable amplitude fatigue on delamination and crack growth rate models
Type: slide
Repository: DUGiDocs

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