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Flexural response of polypropylene/E-glass fibre reinforced unidirectional composites

Flexural response of polypropylene/E-glass fibre reinforced unidirectional composites

Okereke, Michael I ORCID: 0000-0002-2104-012X (2016) Flexural response of polypropylene/E-glass fibre reinforced unidirectional composites. Composites Part B: Engineering. ISSN 1359-8368 (doi:10.1016/j.compositesb.2016.01.007)

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Abstract

This paper presents a study of the flexural response of continuous E-glass fibre reinforced polypropylene composites. Experiments were designed to investigate monotonic and cyclic flexural response using three point bending test for laminates with different angle-ply and cross-ply arrangements. Results show that the monotonic and cyclic flexural response of the composites are influenced by the plastic deformation of the matrix. The study observed that increasing numbers of cyclic loads led to significant energy dissipation, stiffness reduction and micro-damage accumulation within the composite and especially at the matrix-fibre interface. Significant energy dissipation and damage were observed to dominate the first load-unload cycle. With subsequent cycles, the magnitude of energy dissipation and global damage reduces to a threshold value which is cycle independent. This study has also developed a phenomenological model to predict the dependence of energy dissipation with number of cycles. The experimental data generated here will be useful in the development of holistic macroscale constitutive models and finite element studies of the chosen test composite.

Item Type: Article
Additional Information: "This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain." - Elsevier
Uncontrolled Keywords: A. Plytron™,A. Polymer Matrix Composites,B. Cyclic Flexural Response,B. Three Point Bending
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 13 Jul 2017 14:32
Selected for GREAT 2016: None
Selected for GREAT 2017: GREAT c
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/14330

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