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Measurements and predictions of the viscoelastic properties of a composite lamina and their sensitivity to temperature and frequency

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Title: Measurements and predictions of the viscoelastic properties of a composite lamina and their sensitivity to temperature and frequency
Authors: Pathan, MV
Patsias, S
Rongong, J
Tagarielli, V
Item Type: Journal Article
Abstract: We perform finite element analysis of the mechanical response of random RVEs representing the microstructure of a unidirectional (UD) fibre composite, predicting its anisotropic stiffness and damping properties and their sensitivity to temperature and frequency, using as inputs only the measured response of the constituents. The simulations are validated by DMTA measurements on a UD composite; then, the numerical predictions are compared to those of previously published theoretical models. New equations are proposed to predict the viscoelastic constants, providing better accuracy than existing models. The accuracy of these new equations is tested, over wide ranges of fibre volume fractions and stiffness ratios of the constituents, against the numerical predictions.
Issue Date: 8-Sep-2017
Date of Acceptance: 11-Jun-2017
URI: http://hdl.handle.net/10044/1/49118
DOI: 10.1016/j.compscitech.2017.06.005
ISSN: 0266-3538
Publisher: Elsevier
Start Page: 207
End Page: 219
Journal / Book Title: Composites Science and Technology
Volume: 149
Issue: 1
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Innovate UK
Funder's Grant Number: 110123
Keywords: Science & Technology
Technology
Materials Science, Composites
Materials Science
Microstructure
Vibrations
Viscoelastic
Composite
Finite elements
FINITE-ELEMENT
MECHANICAL PROPERTIES
DAMPING PROPERTIES
POISSONS RATIO
MATRIX
VIBRATION
STRESS
MODELS
COMPRESSION
PARAMETERS
09 Engineering
Materials
Publication Status: Published
Online Publication Date: 2017-06-12
Appears in Collections:Aeronautics
Faculty of Engineering