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Lohitesh Jaga Kumar ¹, Jagadeesh P Ganjigatti ², Irfan G ³, Thara R ⁴

Affiliations
1 Assistant Professor, Akshaya Institute of Technology-Tumkur., IN
2 Professor, Siddaganga Institute of Technology-Tumkur., IN
3 Principal, HMSIT-Tumkur., IN
4 Assistant Professor, Channabasaveshwara Institute of Technology-Tumkur., IN

Abstract

This research article mainly focused on the fabrication of aluminum metal matrix composite reinforced with coconut shell ash particulates and graphene to enhance the mechanical and micro structural behaviour. The coconut shell ash particulates (CSA) and graphene are reinforced with 6061 aluminum alloy. The fabrication of aluminum metal matrix composites were prepared by adding various weight percentages of graphene and coconut shell ash particulates in aluminum alloy by using stir casting techniques with a restricted environment. The proper reinforcement on 6061 aluminum alloy materials play a very important role in enhancing its mechanical and micro structural properties. The results obtained reveal that the mechanical properties were improved by increasing the percentage on graphene and coconut shell ash particulates such properties are tensile strength, hardness and yield strength of 6061 aluminum alloy materials. The micro structural analysis reveals that the proper dispersion of graphene and coconut shell ash particulates in 6061 aluminum alloy materials. The enhanced mechanical properties were obtained by addition of 8wt% of coconut shell ash particulates and 0.8wt% of graphene.

Keywords

Aluminum Metal Matrix Composites, Stir Casting Method, Coconut Shell Ash Particulates, Graphene and Micro Structures.

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Thara R ¹, Irfan G ², Lohitesh Jaga Kumar ³, Jagadeesh P Ganjigatti ⁴

Affiliations
1 Department of Mechanical Engineering, Channabasaveshwara Institute of Technology, Gubbi, Tumakuru-, Karnataka, IN
2 H.M.S. Institute of Technology, Tumakuru, Karnataka, IN
3 Research Scholor, Industrial Engineering and Management, Siddaganga Institute of Technology, Tumakuru , Karnataka, IN
4 Professor, Siddaganga Institute of Technology, Tumakuru, Karnataka, IN

Abstract

This work involves the investigation of values of design constraints which are optimum and which can be used or helpful in design optimization of Plate-Fin Heat Exchanger (PFHE). Core Area, Core Length Reynolds’s Number and Fin Height. Pressure drop (Minimum–Friction factor) and heat transfer (maximum–Nusselt number) are fixed as the responses. The Taguchi method for Design of Experiments (DOE) has been used to frame the number of experiments for the taken values of the factors and Response surface methodology (RSM) has been used as the optimization tool from MINITAB. At the end optimization curves are obtained to find the optimal values of the factors resulting in the desired values of responses MINITAB. A conclusion is made to find out the best statistical model for optimization of performance parameters in a PFHE. For the purpose, Plate fin heat exchanger is considered.

Keywords

Design constraints, Reynolds’s no, Nusselt no, core area, core length, fin height, friction factor, taguchi, Response surface methodology.

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