Ray, Dipa and Sarkar, Bijit Kumar and Bose, Nripati Ranjan (2002) Fracture characteristics of vinylester resin under impact fatigue. Journal of Applied Polymer Science , 86 (8). pp. 1995-2001. ISSN 1097-4628

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Abstract

The impact fatigue behavior of a vinylester resin was studied with a pendulum-type repeated-impact tester especially designed and fabricated for the determination of single-impact and repeated-impact strengths. A well-defined energy-endurance impact fatigue curve was obtained with a progressive endurance at values of the impact energy below the critical value, with the endurance limit sot at an energy level of 31 N mm, 17.4% of the single-impact energy. The nature of the crack propagation was investigated for a single impact as well as high, medium, and low impact energy levels with progressively longer endurance. The fracture characteristics varied with the impact energy imparted and the number of cycles endured. The rate of lip growth was high at the higher impact energy levels with a lower number of endurance cycles and low at the lower impact energy levels with longer endurance; the repeated impacts created large and small compressive zones through the bending of specimens with the development of long and short lips, respectively. (C) 2002 Wiley Periodicals, Inc.

Item Type:	Article
Uncontrolled Keywords:	Resins; Fatigue analysis; Fracture
Subjects:	Microstructure and Characterization
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	22 Mar 2012 12:31
Last Modified:	22 Mar 2012 12:31
URI:	http://cgcri.csircentral.net/id/eprint/1323

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