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ABSTRACT
The present paper demonstrates the deeper understanding in wear properties of granite particle filled laminate composite. Granite particles loading in the laminates varies from 0-15 wt. %. Wear resistance of Granite particles filled GFRP composite laminates was studied under wear test rig. It was found that the 5% granite filled composite has higher wear resistance. SEM micrograph proved supporting for understanding the influence of filler on wear performance.
1.INTRODUCTION
In the past few decades, GFRPCs are extensively been employed in aerospace, automotive, biomedical and other structural engineering materials. These composites are developed due to their extraordinary strength, stiffness and wear properties (Vishwanath, Verma and Kameswara Rao, 1992). Though much work carried out till today, still systematic understanding of the wear characteristics of GFRPCs are not clearly known. In general, the wear process involves the damage in both surface and contacting substances due to relative motion between them (Hutchings, 1993). Different forms of material removal in Polymer Matrix Composites (PMCs) involve the microcutting, microcracking, micro-fatigue, and microploughing. Due to higher the hardness value of the reinforcement, improved wear resistance and reduced friction coefficient were observed (Prakash, 1993).
Higher tensile and impact strengths were noticed for 50% granite filled epoxy composite (Krishna, 2005). Improved thermal stability, high torsional, dynamic stiffness and negligible internal stresses were observed in epoxy granite composites, since granite has the higher damping capacity than the high carbon steel (Piratelli-filho F;, 2010). Hence, epoxy granite can be used in place of cast iron for better vibration damping capacity and longer tool life. The matrix microstructure and filler particles size, shape, distribution and chemical composition have a large impact on wear property (Buchely et al., 2005). Sharma, 2001 showed that, incorporating granite particulates to Al6061 decreases the coefficient of friction and low wear loss. The process parameter of wear test such as sliding velocity has quite unlike influence on different combination of polymer composite systems. In case of epoxy-graphite composite system, wear was low as the velocity increases and minimum wear at middle values of velocity (Tripathy and Furey, 1993).
It has been reported that, solid lubricants have considerable influence on frictional material properties when they are used in automotive brake friction materials (Cho et al., 2006); whereas, Bahadur and Polineni (1996) found...