Affiliation:
1. Northwestern Polytechnical University The People's Republic of China
2. Department of Mechanical and Aerospace Engineering University of Delaware Newark, Delaware 19711
Abstract
The purpose of this work is to demonstrate experimentally the strength behavior of composites reinforced with prestressed fiber strands. In a preceding article, a theoretical analysis of the feasibility of strength enhancement by fiber prestressing has been demonstrated. In this paper, fiber prestressing is achieved by bending of the loose bundles and the weak points of the fibers are thus eliminated. The experimental results show that after prebending the fibers to an appropriate level the strength of composites can be enhanced. Although the increase in composite mean strength is small, the varia tion of composite strength is greatly reduced, and the strength at high survivability level is enhanced most significantly.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Reference6 articles.
1. Mills, G.J., Brown, G. and Waterman, D. "Prestressing of Fiber/Resin Prepreg Systems for Laminate Property Improvements," Proceedings of the 1975 International Conference on Composite Materials, Vol. 2, (Geneva 1976)pp. 222-246.
2. Effects of Prestressing Boron/Epoxy Prepreg on Composite Strength Properties
3. Enchancement of Strength in Composites Reinforced with Previously Stressed Fibers
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