The influence of fibre sizing on the strength and fracture toughness of glass fibre composites

Feih, S, Wang, J, Kingshott, P and Sorensen, B 2005, 'The influence of fibre sizing on the strength and fracture toughness of glass fibre composites', Composites Part A: Applied Science and Manufacturing, vol. 36, no. 2, pp. 245-255.


Document type: Journal Article
Collection: Journal Articles

Title The influence of fibre sizing on the strength and fracture toughness of glass fibre composites
Author(s) Feih, S
Wang, J
Kingshott, P
Sorensen, B
Year 2005
Journal name Composites Part A: Applied Science and Manufacturing
Volume number 36
Issue number 2
Start page 245
End page 255
Total pages 11
Publisher Pergamon
Abstract The influence of the fibre/matrix interface strength on fibre cross-over bridging in a crack along fibres is investigated. Four different composite systems (commercial glass fibre with two different sizings and two matrix resins) resulting in strong and weak interfaces were manufactured. Their crack growth resistance during crack propagation with fibre bridging in a double cantilever beam specimen loaded with end moments was measured. Bridging laws were derived from the experimental results and correlated with the chemical interface characteristics and a micromechanical model. It was found that a strong interface provided higher transverse strength and crack initiation loads, while the weak interface exhibited higher toughness due to enhanced fibre bridging. Composites with different matrix resins showed large variations in bridging behaviour even if their transverse strength was similar.
Subject Structural Engineering
Keyword(s) cantilever beams
crack propagation
fracture toughness
glass fibers
interfaces (materials)
resins
strength of materials
toughness
DOI - identifier 10.1016/j.compositesa.2004.06.019
Copyright notice © 2004 Elsevier Ltd. All rights reserved.
ISSN 1359-835X
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