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      저자 : Ruban Whenish (검색결과 2 건)
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        Investigations into microstructure and mechanical properties of Al 6061/SiCp metal matrix composite spur gear produced via powder metallurgy

        V. Vijayakumar,Pradeep Johnson,Ruban Whenish,A. John Rajan,Vincent H Wilson 한양대학교 세라믹연구소 2021 Journal of Ceramic Processing Research Vol.22 No.4

        The characteristics of Al 6061/SiCp Metal Matrix Composite (MMC) have been established for checking the suitability oflightweight spur gear using Powder Metallurgy (P/M) technique. Aluminium powder reinforced with SiCp particle withvarious weight.% (0, 5, 10 & 15) and particle sizes (35 μm and 65 μm). The smaller sized spur gears of 4 mm module, 48 mmpitch circle diameter and 22 mm face width were chosen. The complex gear profiled compaction die assembly was manufacturedfor making net shaped gear without any machining operation. The H frame hydraulic press was used to compact gear sampleswith compaction pressures of 132 MPa and 165 MPa. Then gear samples were sintered using muffle furnace at 570 ºC. Theprepared gear samples were used for density measurement, bending strength test, hardness measurement and microstructureanalysis. The research work leads to the observation of Al 6061 with 10 wt.% & 35 μm size of (SiCp) P/M gear exhibiting agreater enhancement of mechanical properties than the unreinforced Al alloy. Thus the effect of adding ceramic particles SiCpwith Al 6061 enhanced the mechanical properties and enabling Al 6061/SiCp composite spur gear suitable for lightweightapplications.

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        Optimization of friction stir welding process parameters on AA 6063-SiC-B4C hybrid metal matrix composites by genetic algorithm

        R. Srinivasan,B. Suresh Babu,P. Prathap,Ruban Whenish,R. Soundararajan,G. Chandramohan 한양대학교 세라믹연구소 2021 Journal of Ceramic Processing Research Vol.22 No.1

        Friction Stir Welding (FSW) is a metal joining process has its own benefits over fusion welding processes. FSW AluminiumMetal Matrix Composites (AMMC) replaced conventional metals for structural applications in aerospace, automobile andmarine sectors. In this present investigation, process parameters of FSW for joining AA 6063-SiC-B4C hybrid MMCs wereoptimized in order to achieve maximum tensile strength. Initially, AMMC was manufactured through stir casting with thematrix AA 6063 and reinforcements SiC and B4C. The hybrid MMC work pieces were subjected to FSW process by varyingthe process parameters such as tool rotation speed, welding speed and axial force using Taguchi L27 orthogonal array. Tensilestrength of hybrid composite was examined and regression analysis were done using MINITAB V17 software. GeneticAlgorithm technique was used to optimize the tensile strength with FSW parametric combinations. The optimum parametersfor FSW of AA6063-SiC-B4C hybrid composites were Tool rotational speed (TRS) – 1050 rpm; Axial Force (AF) – 10 kN andWeld Speed (WS) – 45 mm/min obtained. The optimal parameters were applied to experimental study and the results werevalidated.

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