Browsing by Author "N, Srinivasan"

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    EFFECT OF VITAMIN C ON mRNA EXPRESSION OF BMPs DURING FRACTURE HEALING IN THE FEMUR CALLUS OF SPRAGUE-DAWLEY FEMALE RATS
    (Innovare Academic Sciences, 2014) G., Anbarasi; K., Senthil Kumar; P, Narmadha; N, Srinivasan
    Fracture reparation is a complex physiological process. During fracture healing no scar is left but a new bone tissue is created. In addition to mechanical stabilization, inflammatory cytokines, growth factors, vitamins and trace elements are needed for better and faster fracture healing.Though vitamin C and BMPs are implicated in fracture healing, the interactions between them are not known
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    THERMO-PHYSICAL, TRIBOLOGICAL AND MACHINING CHARACTERISTICS OF HASTELLOY C276 UNDER SUSTAINABLE COOLING/LUBRICATION CONDITIONS
    (Elsevier, 2022-08) Nimel, Sworna Ross; N, Srinivasan; P, Amutha; Munish, Kumar Gupta; Mehmet, Erdi Korkmaz
    Chemical reactivity and poor heat conductivity make nickel (Ni) and its alloys difficult to process. The aerospace industry's expectations for high-quality surfaces are one of the biggest hurdles in machining nickel components. Recent studies have found some flaws in mist lubrication techniques when utilised under high-speed cutting circumstances, thus nanoparticles with higher thermal conductivity than the base fluid is now being used in minimum quantity lubrication (MQL) systems. Nanocarbon dots (CDs) blended with bio lubricant is an effective coolant to enhance the heat transfer capability by decreasing friction. The inclusion of the right nanoparticle ratio to the base liquid is one of the most important challenges that arise when machining. This research focuses on a deeper exploration of Hastelloy C276's tribological behaviour and machinability under various cutting approaches (Dry, MQL Cryo CO2 and N-MQL). Milling trials were carried out with various speed-feed pairings and cutting conditions. Outcomes show that 0.8 wt% CDs with soybean oil reduces the surface roughness by 56–69 %, 15–24 %, and 15–26 % over dry, MQl and cryo CO2 environments. According to elemental study of cutting inserts, adhesion is the primary wear mechanism in all cutting mediums. Finally, the chillness produced by cryo CO2 has a positive effect compared to the N-MQL strategy by producing fine grains.
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    TRIBOENGINEERED INDUSTRIAL LUBRICANT USING PERLITE LOADED FE2O3 NANO-ADDITIVES: A GREENER APPROACH
    (Tierärztliche Praxis, 2020) B, Sathishkumar; P, Tamilarasu; P, Amutha; N, Srinivasan
    Nanoscale additives has received significant importance as anti-wear additives by minimizing the wear and material surface destruction of machines induced by friction between the moving parts. The friction and wear are the two essential factors that are inevitable during the manufacturing process. In this work, an attempt is made to enhance the tribological properties of industrial oil by blending the nanoparticles of Fe2O3 with pearlite. The study is carried out with two different compositions of nanoparticles in aluminum and steel using pin-on-disc wear tester. The experimental outcomes demonstrate the existence of nanoparticles enhances the wear resistance in the base lubricant.