http://20.198.91.3:8080/jspui/handle/123456789/127 Sun, 05 Apr 2026 10:48:14 GMT 2026-04-05T10:48:14Z http://20.198.91.3:8080/jspui/handle/123456789/9459 Title: Development of mini electro-discharge machining (edm) setup Authors: Patra, Gouri Shankar Mon, 01 Jan 2024 00:00:00 GMT http://20.198.91.3:8080/jspui/handle/123456789/9459 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9458 Title: Multi-objective optimization and analysis of bottom purged steelmaking ladles Authors: Kumar, Biranjay Abstract: During secondary steelmaking operations, argon gas is introduced into steelmaking ladles to speed up mass and heat transmission in the melt. Additionally, slag eye development and wall shear stresses are caused by ladle hydrodynamics, which lowers the quality of the steel. A mathematical model is developed in this study to forecast the wall shear stress, slag opening area, and mixing time in single and dual bottom purged industrial steelmaking ladles. To estimate the same, dimensional less empirical correlations have also been suggested. Further to minimize the objective functions i.e., mixing time, slag opening area, and wall shear stress, some multi-objective optimization techniques based on evolutionary algorithms have been introduced. Because the objective functions were opposing in nature, a Pareto optimum solution set—which included simultaneous optimal solutions is produced. Additionally, the ideal process parameters for the ladle's best performance were determined. Further an analysis is done using ANSYS software. Mon, 01 Jan 2024 00:00:00 GMT http://20.198.91.3:8080/jspui/handle/123456789/9458 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/8746 Title: Experimental investigation into micro-grooving on glass by electrochemical discharge turning process Authors: Singh, Dwarika Pratap Sun, 01 Jan 2023 00:00:00 GMT http://20.198.91.3:8080/jspui/handle/123456789/8746 2023-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/8744 Title: Parametric analysis of fibre laser beam welding of copper & SS 304 Authors: Banerjee, Agnibha Abstract: Copper and stainless-steel joints have a wide range of applications due to their excellent combination of strength and ductility, electrical and thermal conductivity, and excellent heattransfer capability, such as fuel lines, brake systems, and electrical connections in the automotive industry, refrigeration units, aircraft components, missile systems, space vehicles, electrical transmission systems, electronic components, and so on. The current work used statistical design of experiments to conduct experimental examinations of continuous wave fibre laser beam welding of 1 mm thick commercially pure copper and stainless-steel grade 304 in butt configuration. Regression models are used to establish the relationship between process parameters such laser power, scanning speed, defocus distance, number of passes, & argon gas pressure and output responses like the width of the fusion zone and size of the heat impacted zone for both Cu and SS 304. ANOVA is used to calculate the percentage contributions of the most important process parameters and their optimum ranges on the output responses. It has been found that the welding process depends largely on the laser power, scanning speed, and defocus distance. The width of the fusion zone is also positively impacted by laser power, while all other parameters have a negative effect. While scanning speed and defocus distance have a detrimental effect on the width of the copper's heat-affected zone, laser power, the number of passes, and gas pressure have a favorable effect. The heat affected zone width of SS 304 is similarly affected positively by laser power and number of passes, while negatively by scanning speed, defocus distance, and gas pressure. The efficiency of the shielding gas is demonstrated by the decrease in the occurrence of longitudinal cracks caused by the production of brittle intermetallic compounds. ANOVA demonstrates the generated model's suitability in terms of accuracy. To achieve the best weld quality at the best process parameter setting, a single and multi-objective desirability function-based optimization technique is used. A comparison of optimization results obtained from PSO, TLBO and GWO is also carried out. The created model was found to be in good agreement with the outcomes of the validation experiment. The optimal parameter values are also used to create a set of samples for tensile and micro-hardness tests. Sun, 01 Jan 2023 00:00:00 GMT http://20.198.91.3:8080/jspui/handle/123456789/8744 2023-01-01T00:00:00Z