Journal
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
Volume 33, Issue 19, Pages 1802-1812Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684414546782
Keywords
Coconut sheath; sisal; fiber composites; chemical treatment; free vibration; damping factor
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Funding
- Department of Science and Technology, Government of India [SR/FTP/ETA-64/2012]
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This work addresses the tensile, impact, and free vibration properties of sisal/coconut sheath fiber hybrid-reinforced unsaturated polyester composites. The hybrid composites are fabricated using a compression molding technique with varying stacking sequences under as-received or chemically treated conditions. The chemical treatments (alkali and trichloro vinyl silane) have shown better performance than untreated composites. Furthermore, the silane-treated composite shows enhanced static mechanical and free vibration properties for all stacking sequences relative to the other two cases. From the experimental results, the silane-treated coconut sheath/sisal/coconut sheath hybrid stack is found to be an optimum stacking sequence for better properties. Further, an encouraging damping factor value is also observed for the optimum stacking sequence. The failure mechanism of interfacial de-bonding between the fibers and the matrix is analyzed with the aid of scanning electron microscopy.
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