Institution
Defence Research and Development Laboratory
Facility•Hyderabad, India•
About: Defence Research and Development Laboratory is a facility organization based out in Hyderabad, India. It is known for research contribution in the topics: Turbulence & Mach number. The organization has 404 authors who have published 420 publications receiving 4183 citations. The organization is also known as: DRDL.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, 3mm thick 15CDV6 alloy steel sheets were joined to SAE 4130 low alloy steel by Inter Pulse Gas Tungsten Arc welding using 8CD12 alloy filler wire, by taking both the base materials in different prior and post heat treatment conditions.
20 citations
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11 Aug 200320 citations
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TL;DR: The present proposed approach replaces the existing practice of physical search for tools from the databooks/tool catalogues with intelligent knowledge-based selection system that employs artificial intelligence based techniques such as artificial neural networks, fuzzy logic and genetic algorithm for decision making and optimization.
Abstract: With the increased trend in automation of modern manufacturing industry, the human intervention in routine, repetitive and data specific activities of manufacturing is greatly reduced. In this paper, an attempt has been made to reduce the human intervention in selection of optimal cutting tool and process parameters for metal cutting applications, using Artificial Intelligence techniques. Generally, the selection of appropriate cutting tool and parameters in metal cutting is carried out by experienced technician/cutting tool expert based on his knowledge base or extensive search from huge cutting tool database. The present proposed approach replaces the existing practice of physical search for tools from the databooks/tool catalogues with intelligent knowledge-based selection system. This system employs artificial intelligence based techniques such as artificial neural networks, fuzzy logic and genetic algorithm for decision making and optimization. This intelligence based optimal tool selection strategy is developed using Mathworks Matlab Version 7.11.0 and implemented. The cutting tool database was obtained from the tool catalogues of different tool manufacturers. This paper discusses in detail, the methodology and strategies employed for selection of appropriate cutting tool and optimization of process parameters based on multi-objective optimization criteria considering material removal rate, tool life and tool cost.
19 citations
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TL;DR: In this paper, the same model is applied for cylindrical port motors with high and moderate mass flux, as well as finocyl grain motors, and it is observed that the computed pressures with the burning time match very well experimental data.
19 citations
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TL;DR: An aerodynamic prediction method for the estimation of aerodynamic characteristics of grid-fin configurations at supersonic Mach numbers has been developed in this paper, which is based on shockexpansion theory.
Abstract: An aerodynamic prediction method for the estimation of aerodynamic characteristics of grid-fin configurations at supersonic Mach numbers has been developed. The method is based on shock-expansion theory. The shock and expansion relations and the interactions between the shock and expansion waves are used to predict the pressure distribution inside each grid-fin cell. The effect of body is modeled using doublet in the crossflow plane. The effect of symmetric separated vortices from the leeward side of body is also modeled using empirical data for the strength and location of vortices. The present method has been validated with available experimental data for body grid-fin configurations at angles of attack without and with fin deflection. The comparison of normal force coefficient on the individual grid fins as well as the overall normal force, pitching moment, and axial force coefficient with experimental data is good. Effect of roll orientation on normal force, pitching moment, and induced out-of-plane force is also brought out.
19 citations
Authors
Showing all 406 results
Name | H-index | Papers | Citations |
---|---|---|---|
Debasish Ghose | 43 | 357 | 8172 |
Pawan Sinha | 40 | 181 | 7949 |
Surendra N. Tewari | 23 | 116 | 1621 |
Saggam Narendar | 23 | 51 | 1541 |
Sumana Srinivasan | 15 | 78 | 716 |
Debasis Chakraborty | 13 | 85 | 626 |
Doran Chakraborty | 9 | 24 | 277 |
S. Vathsal | 8 | 42 | 214 |
P. Manna | 7 | 15 | 201 |
P. Mastanaiah | 7 | 9 | 210 |
B.S. Sarma | 7 | 9 | 288 |
Malsur Dharavath | 7 | 13 | 157 |
Nirmit Prabhakar | 6 | 17 | 74 |
Niladri Mandal | 6 | 9 | 179 |
R.N Bhattacharjee | 5 | 6 | 51 |