His research interesting includes the metallurgy of lightweight materials and the manufacturing of hybrid structure, including aluminium alloys, magnesium alloys and cast iron. The development of new casting alloys and manufacturing of hybrid structure have been licensed to several companies for industrial applications. The advanced magnesium piston, lead-free detonating cords, aluminium alloys for elevated temperatures in automotive engines, aluminium alloys with improved strength and ductility, high pressure die casting of thin-wall componentsfor automotive applications, monoblock casting technology for heat exchanger, and recyclable aluminium structural casting alloy have been used in different countries. Ji serves as a member of the editorial board of four international scientific Journals, technical committee member in BSI and 3 ISO divisions of aluminium alloys and magnesium alloys.
In this context of changing and challenging market requirements, Gas Insulated Substation GIS has found a broad range of applications in power systems for more than two decades because of its high reliability, easy maintenance and small ground space requirement etc.
SF6 has been of considerable technological interest as an insulation medium in GIS because of its superior insulating properties, high dielectric strength at relatively low pressure and its thermal and chemical stability.
SF6 is generally found to be very sensitive to field perturbations such as those caused by conductor surface imperfections and by conducting particle contaminants. The presence of contamination can therefore be a problem with gas insulated substations operating at high fields.
If the effects of these particles could be eliminated, then this would improve the reliability of compressed gas insulated substation. It would also offer the possibility of operating at higher fields to affect a potential reduction in the GIS size with subsequent savings in the cost of manufacture and installation.
The purpose of this paper is to develop techniques, which will formulate the basic equations that will govern the movement of metallic particles like aluminum, copper in a coated as well as uncoated busduct.
In recent years, the areas of industrial application of AC drives, especially Induction machine based on DTC technique has gradually increased due to its advantages over the other techniques of control. However conventional DTC suffers from high torque ripple and variable switching frequency.
This paper, propose a method to reduce torque fluctuations, where the circular flux vector is divided into twelve sectors and is compared with conventional DTC method where the flux vector is divided into six. Electrical and Electronic Engineering Vol.
F and Sansui H, "Simulink model of direct torque control of Induction machine", American journal of applied sciences 5 8: Krishnan, Electric Motor Drives: Enhancing Reusability of Conventional Apollo Modules by proposing change in design and use of new ablative material Enhancing Reusability of Conventional Apollo Modules by proposing change in design and use of new ablative material Abstract: The paper deals with the reusability of command modules used during Apollo space missions.
During Apollo missions in 's the module surface becomes charred up to some extent, hence decreasing the strength and scope of further reusability of the module.
A new design has been proposed and simulation results have revealed the possibility to reuse the module again for another mission. The new design has incorporated an in-built mechanism that will extend some part of the module surface outwards near to the periphery of the base of the module.
The design, mechanism, material and other details are discussed in succeeding sections. New ablative material has been introduced for more getting more promising results. Design patterns have been the target of a great deal of research in the last few years.
A design pattern is a general solution to a commonly occurring problem. They are composed of three parts: This paper concentrates on developing a catalog for design patterns for safety-critical real-time systems and allows flexibility to choose, search a design pattern and add more design patterns.
This tool will be able to help generate the code for the suitable design pattern.“Friction Stir Welding-Technology and Future Potential” during National Conference on Advances and uturistic Tends in Mechanical and Materials Engineering F.
Sep 26, · Hi all, Just a quick question for all you stainless steel experts out there.
We make a special type of tapping screw from stainless because of its hardening capabilities and our requirement to produce a hardened drill tip.
National Institute of Technology Rourkela CERTIFICATE This is to certify that thesis entitled, “AN INVESTIGATION INTO THE FRICTION STIR WELDING OF ALUMINIUM PIPE WITH STAINLESS STEEL PLATE” submitted by Mr. Dr Shouxun Ji is a Reader at the College of Engineering, Brunel University London, UK.
His research activities are carried out at Brunel Centre for Solidification and Technology (BCAST) and the Institute of Materials and Manufacturing (IMM).
The President of the European Academy of Sciences, Alain Tressaud and its Presidium invite you to the reception, organized on April 13th, , at a.m, to be held at the Fondation Universitaire in Brussels, for the occasion of the taking office of the new President Rodrigo Martins and the new Heads of Divisions and Officers.
Friction stir welding (FSW) is a solid-state joining process that uses a non-consumable tool to join two facing workpieces without melting the workpiece material. Heat is generated by friction between the rotating tool and the workpiece material, which leads to a softened region near the FSW tool.