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B Suresha,G Chandramohan,Siddaramaiah,Joong-Hee Lee 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The effect of silicon carbide (SiC) and graphite fillers incorporation on the abrasive wear behaviour of glass-vinyl ester (G-V) composites have been investigated. The three-body abrasive wear behaviour was assessed by rubber wheel abrasion tests (RWAT). The worn surfaces were examined using scanning electron microscopy (SEM). The addition of SiC and graphite fillers in G-V composite improves the abrasion resistance under different loads/abrading distances. The SEM studies indicate the reasons for failure of composites and influencing parameters.
Suresh Babu B,Chandramohan G,Boopathi C,Pridhar T,Srinivasan R 한양대학교 세라믹연구소 2018 Journal of Ceramic Processing Research Vol.19 No.1
The present study elucidates the influence of reinforcement particles in friction stir welded aluminium (Al 6063) matrixcomposites on mechanical properties of the metal matrix composition. Initially composites were successfully fabricated withdifferent weight percentage and combination of reinforcements (graphite (gr), B4C and SiC) through stir casting technique. All sets of composite specimen were welded through solid state joining process of friction stir welding technique, theparameters such as tool rotational speed (800, 1000 and 1200 rpm), welding speed (20 and 40 mm/min) and axial loading (10and 20 kN) are taken for characterization of fabricated composites. The effects of friction stir welding parameters wereexamined by mechanical and microstructural characterizations. The composites microstructure and dispersion of particlereinforcements were analysed through optical microscope and also the mechanical properties of yield strength, ultimatestrength and elongation were analysed using universal testing machine. The optimized friction stir weld parameters wereidentified for 20% weight fraction reinforced hybrid composites.
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.