Roy, R and Sarkar, Bijit Kumar and Bose, Nripati Ranjan (2001) Behaviour of E-glass fibre reinforced vinylester resin composites under impact fatigue. Bulletin of Materials Science, 24 (2). 137-142 . ISSN 0250-4707

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Abstract

An impact fatigue study has been made for the first time on 63.5% glass fibre reinforced vinylester resin notched composites. The study was conducted in a pendulum type repeated impact apparatus especially designed and fabricated for determining single and repeated impact strengths. A well-defined impact fatigue (S-N) behaviour, having a progressive endurance below the threshold single cycle impact fracture stress with decreasing applied stress has been demonstrated. Fractographic analysis revealed fracture by primary debonding having fibre breakage and pullout at the tensile zone, but a shear fracture of fibre bundles at the compressive zone of the specimen, The residual strength, modulus and toughness showed retention of the properties at high impact stress levels up to 1000 impacts followed by a sharp drop. Cumulative residual stresses with each number of impacts not withstanding the static fatigue failure at long endurances have been ascribed for the composite failures under the repeated impact stresses.

Item Type:	Article
Additional Information:	International Conference on Fatigue and Fracture of Glasses, Ceramics and Composites Location: KOLKATA, INDIA Date: SEP, 1999
Uncontrolled Keywords:	impact fatigue; static fatigue; residual stress; E-glass fibre; vinylester resin
Subjects:	Glass
Divisions:	Glass
Depositing User:	Mrs Chandana Patra
Date Deposited:	06 Mar 2012 08:13
Last Modified:	21 Nov 2012 06:43
URI:	http://cgcri.csircentral.net/id/eprint/1175

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