Synergistic Effect of Hybrid Micro Fillers on Tensile and Flexural Properties of PA66/PTFE Blend Micro Composites: Effect of Strain Rate
Rudresh B M1, Ravikumar B N2, Madhu D3

1Rudresh B M, Department of Mechanical Engineering, Government Engineering College, K R Pet, (Karnataka), India.
2Ravikumar B N, Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore (Karnataka), India.
3Madhu D, Department of Mechanical Engineering, Government Engineering College, Ramanagaram (Karnataka), India.
Manuscript received on 20 May 2019 | Revised Manuscript received on 06 June 2019 | Manuscript Published on 15 June 2019 | PP: 169-176 | Volume-8 Issue-1S2 May 2019 | Retrieval Number: A00380581S219/2019©BEIESP
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Abstract: Influence of strain rate on tensile and flexural properties of hybrid micro fillers filled PA66/PTFE based micro composites was studied. The materials systems used for the study were Blend (PA66/PTFE)/ Molybdenum Disulphide(MoS2 ) (F1), Blend (PA66/PTFE)/Molybdenum Disulphide/Silicon Carbide(SiC)(F2) and Blend (PA66/PTFE)/ Molybdenum Disulphide/Silicon Carbide /Alumina (Al2O3 ) (F3). The micro fillers such as MoS2 , SiC and Alumina were micro fillers for the development of micro composites. These hybrid composites were developed using melt mix followed by extrusion. The effect of high strain rate (5, 25 and 50 mm/min) on tensile strength and (1.33, 2 and 3 mm/min) on flexural strength are studied as per ASTM method. It was observed from the experimentation results that the increase in strain rate increases the strength of composites both in tension and bending. The stress strain behavior is linear I the beginning later it was nonlinear. The hybridization effect of hybrid fillers helps in shearing the load across the matrix. It was noticed that the yield point of composites is a purely dependent on strain rate. The morphology of failure surfaces was studied through scanning electron microscope photographs (SEM). They revealed that the fillers disintegration and fillers dislocations are the failure mechanisms associated with the micro composites.
Keywords: Strain Rate, PA66/PTFE, Hybrid Fillers, Hybridization, Tensile, Flexural.
Scope of the Article: Composite Materials