Ankur Aggarwal | Amity University, Noida (original) (raw)

Papers by Ankur Aggarwal

Optimization is a process or a technique to make something perfect or effective as much as possib... more Optimization is a process or a technique to make something perfect or effective as much as possible. Optimization is one of the best methodology used in manufacturing and production sectors to attain the optimal manufacturing conditions at lower cost with the optimal results. Electric discharge machining is the non-traditional machining process. Basically, EDM is used for the hard metals or those materials which are difficult to machine by some other traditional processes. The electric discharge machining process based upon the thermo electric energy between the work piece and the electrode. In this the material removal is occurred electro thermally by a series of successive discharges that are between the electrode and work piece. Aim of this paper was to investigate the optimal set of process parameters such as Voltage, Current and Pulse on time in the electric discharge machining to identify the variations in the three characteristics such as Material removal rate (MRR), Tool wear rate (TWR), and Surface roughness (Ra) on the work piece Mild Steel IS 2026 and the electrode is Copper. Machining process is done to achieve results like higher material removal rate, better surface finish and lesser tool wear rate. Taguchi method and ANOVA technique is used to get the optimized result. Graphs and response table are used to find the optimal levels of the parameters in the Electric discharge machining. The result revealed that the current, voltage & pulse on time have a great influence on the MRR,TWR and surface roughness. KEYWORDS: Electric discharge machining, Mild Steel IS 2026 work-piece, copper electrode, Current, Voltage, Pulse on time, Taguchi L9 orthogonal array, Miinitab-17, ANOVA, S/N ratio, Surface Roughness (Ra), Material Removal Rate(MRR), Tool Wear Rate(TWR). .

The following paper describes the design as well as analysis of a hydraulic scissor lift having t... more The following paper describes the design as well as analysis of a hydraulic scissor lift having two levels. Conventionally a scissor lift or jack is used for lifting a vehicle to change a tire, to gain access to go to the underside of the vehicle, to lift the body to appreciable height, and many other applications .A Scissor lift is the type platform that can usually move vertically. This mechanism is achieved by the use of link, folding support in crisscross pattern known as a Pantograph. The upward motion is achieved by the application of pressure to outside of the lowest set of support elongating the crossing pattern and propelling the work platform vertically. This paper describes the complete study of components (Hydraulic cylinder, scissor arms, spacing shaft and platform), selection of materials and analyze the dimensions of components along with their sketches with the help of design software CATIA V5 followed by stress analysis on COMSOL. Further fabrication of all the parts and assembly is carried out . This technology is urgently needed to increase the efficiency of lifting load and to reduce the complexity of construction work. A Scissor lift is used for Arial works in industries, used for maintenance at high altitude. The design described in the paper is developed keeping in mind that the lift can be operated by mechanical means so that the overall cost of the scissor lift is reduced. Also such design can make and much suitable for medium the lift more compact scale work.