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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/1327

Title: Failure and Fractography Studies of FRP Composites: Effects of Loading Speed and Environments
Authors: Dalai, R P
Ray, B C
Keywords: FRP Composites
Issue Date: 2011
Citation: PFAM 19 ( Processing and Fabrication of Advanced Materails) , University of Auckland, New Zealand, 14-17th Januray, 2011
Abstract: Advanced fibrous polymeric composites are one of the most successful composite material systems due to their wide range of advantages such as high specific strength and stiffness, fatigue properties and corrosion resistance. Composite structures undergo different loading conditions i.e. from static to dynamic during their service life. The polymer matrix is more susceptible to the environmental changes than the fiber and thus dominates the mechanical behavior of FRP composites. Polymers are characterized as visco-elastic materials that their mechanical properties are strain rate dependent or they are called as sensitive to the rate at which loaded. At higher crosshead speed due to shorter load assisted relaxation time, there is reduction in ILSS. The polymer gets more time for relaxation at lower crosshead speeds; as a result there is enhancement of ILSS values. Fracture processes at the crack tip are controlled by thermal relaxation time and mechanical relaxation. (At higher strain...
URI: http://hdl.handle.net/2080/1327
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