Abstract
This work addresses the results of experimental investigation carried out on free vibration characteristics of short sisal fiber (SFPC) and short banana fiber (BFPC) polyester composites. Influence of fiber length and weight percentage on mechanical properties and free vibration characteristics are analyzed. Composite beam specimen is fabricated with random fiber orientations at17MPa compression using compression molding machine. Natural frequencies and associated modal damping values of the composite laminates were obtained by carrying out the experimental modal analysis. It is found that an increase in fiber content increases the mechanical and damping properties. For SFPC, 3mm fiber length and 50wt% fiber content yielded better properties, whereas for BFPC, 4mm fiber length and 50wt% fiber content was the best combination. Scanning electron microscopy was performed to study the interfacial mechanism.
Published Version
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