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Your search keyword '"Gopinath Dhamodaran"' showing total 4 results
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4 results on '"Gopinath Dhamodaran"'

1. Experimental Studies on the Performance of Graphene Oxide Based Hybrid Nanopolymers for Bearing Applications

Author

Geetha Rajamani, Madhan Mohankumar, Gopinath Dhamodaran, S. Om Prakash, and A. Johnson Santhosh

Subjects
Chemical technology, TP1-1185
Abstract

In this experimental study, graphene oxide-blended glass-filled nylon (GO-GFN) hybrid nanopolymer composites were developed and characterized. Transmission electron microscopic studies were performed to study the dispersion of graphene oxide in glass-filled nylon composites. Dynamic mechanical analysis and thermogravimetric analyses were conducted on the fabricated hybrid nanopolymer composites to analyze the mechanical and thermal stability. Mechanical properties were investigated by tensile test. The test showed improvements in young’s modulus and tensile strength. Water absorption test was conducted to study the water absorption resistance of the hybrid nanopolymer composites. Finally, roller bearings with graphene oxide and glass-filled nylon were fabricated and analyzed for wear under varying load and speed conditions in the test rig developed in-house. The tests proved the suitability of deploying hybrid nanopolymer composites for bearing applications.

Published
2022
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4. Experimental investigation and performance prediction of gasoline engine operating parameters fueled with diisopropyl ether-gasoline blends: Response surface methodology based optimization

Author

Seetharaman Sathyanarayanan, S Suresh, C.G. Saravanan, M. Vikneswaran, Gopinath Dhamodaran, Ankit Sonthalia, J.S. Femilda Josephin, Edwin Geo Varuvel, İstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Bilgisayar Mühendisliği Bölümü, Josephin, J.S. Femilda, Varuvel, Edwin Geo, and AAE-5222-2022

Subjects
Optimization, Renewable Energy, Sustainability and the Environment, Alternate Fuel, Diisopropyl Ether, Strategy and Management, Building and Construction, Emission Control, Gasoline Engine, Response Surface Methodology, Industrial and Manufacturing Engineering, General Environmental Science
Abstract

In this research, gasoline engine performance and emission characteristics were studied when powered by diisopropyl ether-gasoline blends. The main objective of this study is to determine the behavior of diisopropyl ether-gasoline blends at various engine speeds and compression ratios. Further, the engine parameters were optimized using the response surface methodology. Enriched oxygen, higher latent heat of vaporization, and the readily volatile nature of the fuel enhanced the brake thermal efficiency and lowered the hydrocarbons and carbon monoxide due to a better combustion rate. The developed model exhibited superior R2 values with a 0.957 desirability factor. The optimum parameters such as speed, compression ratio, and fuel-blend concentrations were found at 2250 rpm, 10:1, and D25 (75% gasoline and 25% diisopropyl ether), respectively. The responses for the optimal input parameters were brake thermal efficiency (31.53%), specific fuel consumption (0.2923 kg/kWh), carbon monoxide (0.14% by Vol.), hydrocarbons (31 ppm), and oxides of nitrogen (708 ppm). The predicted values for optimum engine parameters were validated with the experimental data, and their percentage of absolute error was found to be less than 5%. Thus, the study concludes that diisopropyl-ether gasoline blends can be used as an alternative fuel to enhance the brake thermal efficiency and reduce the pollution level, and the proposed numerical model can predict the responses with high accuracy. WOS:000862659300004 Q1

Published
2022

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