UHMWPE fibre-based composites: Prestress-induced enhancement of impact properties

Fazal, Adnan and Fancey, Kevin (2014) UHMWPE fibre-based composites: Prestress-induced enhancement of impact properties. Composites Part B: Engineering, 66. pp. 1-6.

Full text not available from this repository.

Abstract

The impact properties of continuous unidirectional UHMWPE fibre-reinforced polyester resin composites have been investigated, to elucidate the effects of prestress on energy absorption characteristics. Prestress within composite samples was produced by subjecting the UHMWPE fibres to a creep load, which was then released prior to moulding. From Charpy impact tests, these viscoelastically prestressed samples absorbed ∼20% more energy than their control (unstressed) counterparts, with some batches reaching 30–40%. Generally, whether prestress is created through elastic or viscoelastic means, fibre–matrix debonding is regarded as being a major energy absorption mechanism in this type of composite, but this was not evident in the current study. Instead, evidence of debonding at the skin-core interface within the UHMWPE fibres was found, the skin regions possessing lower stiffness and longer term viscoelastic activity. Skin-core debonding appears to have a significant energy absorbing role within the prestressed samples and we believe it is a previously unrecognised mechanism.

Item Type:	Article
Identification Number:	https://doi.org/10.1016/j.compositesb.2014.04.031
Date:	9 May 2014
Subjects:	F200 Materials Science J500 Materials Technology not otherwise specified
Divisions:	Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Depositing User:	Adnan Fazal
Date Deposited:	14 Jun 2018 09:07
Last Modified:	15 Jun 2018 13:35
URI:	http://www.open-access.bcu.ac.uk/id/eprint/6038

Actions (login required)

View Item