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Journal of Materials
Volume 2014, Article ID 478549, 9 pages
http://dx.doi.org/10.1155/2014/478549
Research Article

Effect of Short Fiber Reinforcement on Mechanical Properties of Hybrid Phenolic Composites

1Department of Mechanical Engineering, SSM College of Engineering, Komarapalayam, Tamil Nadu 638183, India
2Department of Mechanical Engineering, The National Institute of Engineering, Mysore, Karnataka 570 008, India
3Department of Mechanical Engineering, Shivani College of Engineering and Technology, Trichy, Tamil Nadu 620009, India
4Department of Automobile Engineering, Sri Jagadguru Mallikarjuna Murugharajendra Institute of Technology, Chitradurga, Karnataka 577 502, India

Received 23 February 2014; Revised 31 May 2014; Accepted 4 July 2014; Published 6 August 2014

Academic Editor: Andrzej Galeski

Copyright © 2014 Sembian Manoharan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Fiber plays an important role in determining the hardness, strength, and dynamic mechanical properties of composite material. In the present work, enhancement of viscoelastic behaviour of hybrid phenolic composites has been synergistically investigated. Five different phenolic composites, namely, C1, C2, C3, C4, and C5, were fabricated by varying the weight percentage of basalt and aramid fiber, namely, 25, 20, 15, 10, and 5% by compensating with barium sulphate (BaSO4) to keep the combined reinforcement concentration at 25 wt%. Hardness was measured to examine the resistance of composites to indentation. The hardness of phenolic composites increased from 72.2 to 85.2 with increase in basalt fiber loading. Composite C1 (25 wt% fiber) is 1.2 times harder than composite C5. Compression test was conducted to find out compressive strength of phenolic composites and compressive strength increased with increase in fiber content. Dynamic mechanical analysis (DMA) was carried out to assess the temperature dependence mechanical properties in terms of storage modulus (), loss modulus (), and damping factor (tan δ). The results indicate great improvement of values and decrease in damping behaviour of composite upon fiber addition. Further X-ray powder diffraction (XRD) and energy-dispersive X-ray (EDX) analysis were employed to characterize the friction composites.