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Review of size effects in micro electrical discharge machining

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TLDR
In this article, a comprehensive review of size effects in traditional micro-machining and characteristics specific to micro EDM compared to macro EDM techniques is presented and three categories of effects are presented: material microstructure, processing parameter and thermal conduction size effects.
Abstract
Electrical discharge machining (EDM) is one of the most promising non-traditional micro-scale machining methods. Because several operating parameters that are insignificant in macro EDM cannot be neglected during micro EDM process, models derived from the macro EDM process may be inappropriate at the micro scale. This paper contains a comprehensive review of size effects in traditional micro-machining and characteristics specific to micro EDM compared to macro EDM techniques. The very concept of size effects in micro EDM is thoroughly defined and three categories of effects are presented: material microstructure, processing parameter and thermal conduction size effects. Future potential research directions on the subject are also summarized. We assert that careful research and precise attention must be given to size effects in micro EDM. Size effect information especially benefits the machining speed and machining precision of micro EDM.

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Citations
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A comparative investigation on temperature distribution in electric discharge machining process through analytical, numerical and experimental methods

TL;DR: A comprehensive review of analytical, numerical and experimental investigations on temperature prediction has been provided to organize different methods to integrate them as useful information for elucidating the differences between approaches and identifying their proximities to the real temperature distribution as mentioned in this paper.
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Dimensional accuracy in dry micro wire electrical discharge machining

TL;DR: In this article, the analysis and modelling of dimensional accuracy in dry micro wire electrical discharge machining with control parameters of gap voltage and wire tension was performed on stainless steel using integrated multi-process micro machine with compressed air as the dielectric fluid and tungsten as the wire electrode.
Journal ArticleDOI

Research on the energy distribution of micro EDM by utilization of electro-thermal model

TL;DR: In this paper, the difference in the material removal mechanism between conventional and micro EDM is properly considered and the plasma radius and fraction of energy transferred into workpiece are determined by the discharge current and discharge duration.
Journal ArticleDOI

A sustainability index for the micro-EDM drilling process

TL;DR: In this paper, a sustainability index is defined and applied to a micro-electrical discharge machining (EDM) process in drilling operations, which is composed of five sub-indices that evaluate a particular aspect: energy consumption, environmental impact, dielectric consumption, wear of electrode, and machining performance in general.
Journal ArticleDOI

A review on optimization of machining performances and recent developments in electro discharge machining

TL;DR: The various issues related to EDM are addressed and brief insight is provided into some of the current generation applications of EDM process explored in various industries.
References
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Book

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TL;DR: In this paper, the authors propose a theory which goes beyond the classical formulation of thermodynamics by enlarging the space of basic independent variables, through the introduction of non-equilibrium variables, such as the dissipative fluxes appearing in the balance equations.
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A Unified Field Approach for Heat Conduction From Macro- to Micro-Scales

TL;DR: In this article, a universal constitutive equation between the heat flux vector and the temperature gradient is proposed to cover the fundamental behaviors of diffusion, wave, phonon-electron interactions, and pure phonon scattering.
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State of the Art of Micromachining

TL;DR: In this article, the authors summarized the basic concepts and applications of major methods of micromachining and discussed the basic characteristics of each group of methods based on different machining phenomena.
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Advancing EDM through fundamental insight into the process

TL;DR: In this paper, the authors show the prospects of electrical discharge machining (EDM) technology by interrelating recent achievements in fundamental studies on EDM with newly developed advanced application technologies.
Journal ArticleDOI

Heat transfer mechanisms during short-pulse laser heating of metals

TL;DR: In this paper, the Boltzmann transport equation is used to model the transport of electrons and electron lattice interactions during ultrafast laser heating of metals from a microscopic point of view.