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Fatigue Performance of Carbon Reinforced Composites Containing Reactive Liquid

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Fatigue Performance of Carbon Reinforced Composites Containing Reactive Liquid Rubbers

 

In the automotive industry the demand for lighter weight components is increasing day by day and composite materials are used to achieve this requirement.  Carbon fiber reinforced epoxy composites are making inroads in the automotive industry because of their superior properties such as high specific strength and stiffness, excellent fatigue and chemical resistance. Since, epoxy resins are brittle in nature; their toughness can be enhanced by reactive liquid rubbers. In this study carbon fiber reinforced composites were manufactured using epoxy resin modified by one of the reactive liquid rubber particles called as carboxyl terminated butadiene acrylonitrile (CTBN). Since, fatigue failure of composites is complex phenomenon; the major aim of this study is to examine the effect of CTBN under axial tension- tension fatigue performance. This research was first initiated by performing mechanical characterization (tensile and flexural) on neat and rubber particles modified resin specimens. Carbon fiber reinforced composites specimens were manufactured by Vacuum Assisted Resin Transfer Molding (VARTM). To obtain a qualitative dispersion of rubber particles in resin, centrifugal planetary mixer (THINKY™) was utilized in this research. Two different concentrations of rubber particles were tested under tensile, flexural, and interlaminar shear loadings. Then the data was compared against a control (0 wt%) composites.  Based on mechanical characterization, one particular loading was selected for fatigue studies. Extensive axial tension-tension fatigue testing was performed on control and rubber modified composites.

 

Authors: J. S. Tate, Dinesh Kumar, Kannabiran Vasudevan

 

Conference: CAMX 2016 – Anaheim

 

SKU/Code: TP16-0164

 

Pages: 18



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