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Experimental Study on Mechanical Properties of Red Granite-Epoxy Particulate Composites

Sandesh Kamath, Joel D Mello, and S S Balakrishna
Department of Mechanical Engineering, Sahyadri College of Engineering & Management, Mangalore, Karnataka, India.

Abstract—This paper presents a study on the red granite powder reinforced epoxy composite. The composites have been fabricated by varying the granite-epoxy ratio on weight percentage basis. The compressive strength of the composite is studied by varying the epoxy content and the grain size ratio by weight percentage using Taguchi’s orthogonal array L-27 and Analysis of Variance (ANOVA) by assistance of Minitab 16 software. The damping behaviour is studied using experimental setup interfaced to LabVIEW software. The Mechanical properties are investigated by conducting tensile, flexural, impact, hardness and water absorption tests. The compression test results recorded a very good strength of 110 MPa for granite-epoxy ratio 75:25 with grain size ratio 50:50. The composite shows high damping for granite-epoxy ratio 80:20. The tensile, flexural and impact strengths are found to be maximum for granite-epoxy ratio 50:50. Rockwell hardness test indicates highest hardness for granite-epoxy ratio 80:20.

Index Terms—ANOVA, Compressive strength, Damping ratio, Epoxy, Red granite

Cite: Sandesh Kamath, Joel D Mello, and S S Balakrishna, "Experimental Study on Mechanical Properties of Red Granite-Epoxy Particulate Composites," International Journal of Mechanical Engineering and Robotics Research, Vol.3, No.4, pp. 178-187, October 2014.