Department of Production Engineering

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Browsing Department of Production Engineering by Author "Anandakrishnan, V"

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    Investigations on the microstructure and properties of yttria and silicon carbide reinforced aluminium composites
    (Elsevier Ltd, 2023-04-12) Shantharaman, P.P.; Anandakrishnan, V; Sathish, S; Ravichandran, M; Naveenkumar, R; Jayasathyakawin, S; Rajesh, S
    Powder Metallurgy (PM) was used to synthesize SiC (0, 5, 10, 15 & 20 wt%) and 1 wt% Yttria (Y2O3) reinforced aluminium (Al) metal matrix composites. The Al–SiC–Y2O3 hybrid composites samples were prepared for density (ρ), hardness (VHN), mechanical, tribological, and microstructural studies in accordance with ASTM standards. SEM images revealed an even spreading of SiC particles throughout the Al matrix and composition was verified by the characterization techniques. The addition of SiC and Y2O3 to their respective composites improved the VHN and ‘ρ’. The compressive strength (CS) of Al–SiC–Y2O3 composites increased while increasing the SiC. The higher compression strength (405 MPa) was obtained for the Al − 1 wt% Y2O3-20 wt% SiC- hybrid composites. The thermal conductivity (K) of Al–SiC–Y2O3 samples diminishes, as the hard SiC particles are gradually added. Furthermore, it was observed that accumulative the wt% of SiC in the aluminium metal matrix (AMMC) results in a novel material with a decreased wear rate. The better properties was achieved for the samples contain 20 wt% of SiC content in Al − 1 wt% Y2O3 matrix.
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    Investigations on the Wear Behaviour and Mechanism of Mg-3Al/5.6Ti Composite under Dry Sliding
    (Polska Akademia Nauk, 2025) Sathish, S; Anandakrishnan, V; Gupta, M
    Magnesium containing 3 weight percentages of aluminium particles and 5.6 weight percentages of titanium particles (reinforcement) was prepared using the disintegrated melt deposition technique to investigate their synergistic effect on the tribological behaviour of Mg-3Al/5.6Ti composite. Metallographic features of the composite samples were analysed using x-ray diffraction analysis and scanning electron microscopy to disseminate the particle distribution and phase formation. The wear behaviour of the samples was studied using dry sliding wear testing by systematically varying load and sliding velocity over a sliding distance of 2000 m. The post-failure analysis was performed on the worn surface of pins, and the collected debris using scanning electron microscopy and the mechanisms involved in the wear behaviour of composite samples were identified.
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    Optimization of Tribological Parameters of Pre-Positioned Wire Based Electron Beam Additive Manufactured Ti-6Al-4V Alloy
    (Polska Akademia Nauk Materials, 2022) Manjunath, A; Anandakrishnan, V; Ramachandra, S; Prrthiban, K; Sathish, S
    The versatile application of titanium alloy in the aerospace industry and it's hard to machine characteristics focus towards the additive manufacturing. The Ti-6Al-4V alloy is manufactured using the electron beam source with a novel method of prepositioned titanium alloy wires. The tribology of the additive manufactured titanium alloy under dry sliding condition is experimented and analysed using Taguchi technique. The targeted objective of minimum tribological responses are attained with the identified optimal parameters as load - 9.81 N, sliding velocity - 3 m/s, sliding distance - 3000 m for minimum specific wear rate and load - 9.81 N, sliding velocity - 3 m/s, sliding distance - 1000 m for minimum coefficient of friction. Among the parameters tested, load is found to be the dominant factor on the tribology of additively manufactured titanium alloy. The morphological analysis on the worn surface and debris revealed the existence of abrasion, delamination and adhesion wear mechanisms. The increase in the load dominantly showed the appearance of delamination mechanism.