OPTIMIZATION OF MACHINING PARAMETERS IN EDM PROCESS USING CAST AND SINTERED COPPER ELECTRODES

In this paper, Taguchi method and super ranking concept are integrated together to present an efficient optimization technique for simultaneous optimization of three NTM processes, i.e. electro-discharge machining process, wire electro-discharge
machining process and electro-chemical discharge drill[r]

Rio Tinto
At this period, Rio Tinto was being worked only for copper; silver was first exploited in this area between the twelfth and eleventh centuries BC. The chalcopyrite ore which appears to have been worked for silver around 1200 BC at Rio Tinto was taken from a thin, con[r]

Another subject to consider is the computational load of the optimizations detailed in the previous section. An EA run of 2500 generations (which is the number of generations used in this work for the experiments) takes approximately 84 hours (about 2 minutes for e[r]

These speeds and feeds can be increased where there is no melting, burning, discolora- tion, or poor surface finish. Drilling is best done with commercially available drills designed for plastics, usually having large helix angles, narrow lands, and highly polished or chromium-plated f[r]

3. Results and discussion
3.1. The effect of power density
Mixing of emulsion components and the breakdown of larger oil drops into nanosize droplets is governed by the extent of dis- ruptive forces or energy delivered to the liquid sample. As final size[r]

In this context, a considerable amount of recent research effort has been expended (e.g., [1-9]). The present work contributes with a pointful appraisal of the mathematical optimization and exergoeconomic improvement of energy systems modeled in a[r]

High-speed filming techniques have been used to directly monitor chip formation. Indirect methods include force, acoustic emission, and infrared emission measurements, and sensor fusion based on AI techniques.
Chip formation control is typically achieved through the design of[r]

This study aims to assess the most efficient combinations of vaccination and screening coverage for the prevention of cervical cancer (CC) at different levels of expenditure in Nigeria. An optimization procedure, using a linear programming approach and requiring the use of two models (an evaluation[r]

Parts of the experiment are conducted with the L9 orthogonal array based on the Taguchi methodology and significant process parameters are identified using Analysis of Variance (ANOVA). It is found that MRR is affected by gap current & Ra is affected by pulse on time. Moreover, the signal-to-noise r[r]

In the hydrofraturing process, the parameters such as Pressure in Nmm2, Temperature in ºC, Injection hole diameter in mm play a major
role in determining the frature length during the hydrofracturing process. A central composite rotatable design with three factors and three levels was
chosen to mini[r]

This article presents analysis of inverse dynamics of a serial manipulator in milling process. With the exception of positioning accuracy issue, machining by robots have more advantages than by conventional CNC milling machines, due to higher flexible kinematics (many links and degrees of freedom) a[r]

This article presents analysis of inverse dynamics of a serial manipulator in milling process. With the exception of positioning accuracy issue, machining by robots have more advantages than by conventional CNC milling machines, due to higher flexible kinematics (many links and degrees of freedom) a[r]

Receding horizon control is a common control concept dealing with control approaches, where their parameters are updated frequently along the time axis by using process informations in the past. Various methods of receding horizon control have been proposed, under which also optimization based reced[r]

This paper investigates the effects of process parameters on the mechanical properties of 3D printing parts using photopolymer material. A DLP 3D printing machine was constructed for experimental researches and education.

Abstract
In this article, a wet chemical method was developed to prepare stable CuO nanofluids. The influences of synthesis parameters, such as kinds and amounts of copper salts, reaction time, were studied. The thermal conductivities of CuO nanof[r]

This paper introduces the use of pattern search (PS) algorithm, as a deterministic direct search optimization method, for solving machining optimization problems. To analyze the applicability and performance of the PS algorithm, six case studies of machining optimization problems, both single and mu[r]

Although large bells are usually cast of bronze, other metals have been used. Bells were cast of white iron in China, Russia, and elsewhere. After Benjamin Huntsman's development of cast steel in 1740, be[r]

Blast Cleaning of Castings.—Blast cleaning of castings is performed to remove adhering
sand, to remove cores, to improve the casting appearance, and to prepare the castings for their final finishing operation, which includes painting, machining, or assembling. Scale pro[r]

This work is an investigation of the effects of the processing parameters (E.G., reaction temperatures and reactant concentrations) on the characteristics of copper-based particles synthesized using chemical reduction technique, a simple chemical method that involves the use of reducing agents to tr[r]

Fused deposition modelling (FDM) is gaining distinct advantage in manufacturing industries because of its ability to manufacture parts with complex shapes without any tooling requirement and human interface. The properties of FDM built parts exhibit high dependence on process parameters and can be i[r]