Prediction model development for material removal rate in band sawing using dimensional analysis approach

2018 ◽  
Vol 20 (2) ◽  
pp. 165
Author(s):  
Bhavesh G. Mewada ◽  
Harit K. Raval
Keyword(s):  
Prediction Model ◽  
Dimensional Analysis ◽  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Model Development ◽  
Analysis Approach

Determination of Material Removal Rate and Radial Overcut in Electro Discharge Machining of AISI 304 Using Dimensional Analysis

2016 ◽  
Vol 852 ◽  
pp. 160-165 ◽  
Author(s):  
Munmun Bhaumik ◽  
Kalipada Maity ◽  
Kasinath Das Mohapatra
Keyword(s):  
Dimensional Analysis ◽  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Machining Process ◽  
Machining Parameters ◽  
Aisi 304 ◽  
Radial Overcut ◽  
Electro Discharge Machining ◽  
Work Material

Electro discharge machining (EDM) is a most commonly used machining process among all the non-conventional machining process which removes materials via electrical and thermal energy. The primary goal of EDM is to get more material removal rate (MRR) with lower radial overcut (ROC). Normally, the responses are predicted using empirical models which are limited to only machining parameters and they do not consider the effects of work material properties on the process performance. Therefore in this study, a model has been developed including machining parameter as well as thermo-physical property of work material. In this investigation, a semi-empirical model has been established for the material removal rate (MRR) and radial overcut (ROC) by adopting the dimensional analysis technique. Dimensional analysis is a technique of dimensions and a mathematical technique that deals with the physical quantities concerned with the experiments to formulate a model for the response in terms of response control parameters as well as some physical properties of the materials. Buckingham’s л theorem is a main theorem in dimensional analysis and it is a signification of Rayleigh’s method of dimensional analysis. The theory is applied to gather each and every variable presenting the problem in a number of the dimensionless products. For this study, the thermo-physical properties viz. density, thermal conductivity and coefficient of thermal expansion and machining parameters like peak current, pulse on time, gap voltage and duty cycle are considered as input factor. AISI 304 stainless steel used as work material and Tungsten carbide is used as tool material for this investigation.

scholarly journals Modeling of Material Removal Rate and Surface Roughness Generated during Electro-Discharge Machining

Machines ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 47 ◽  
Author(s):  
Amin Razeghiyadaki ◽  
Carlo Molardi ◽  
Didier Talamona ◽  
Asma Perveen
Keyword(s):  
Surface Roughness ◽  
Material Removal Rate ◽  
Material Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Model Development ◽  
Rectangular Domain ◽  
Published Data ◽  
Electro Discharge Machining ◽  
Residual Heat

This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM). A simplified 2D numerical heat conduction equation along with additional assumptions, such as heat effect from previously generated crater on a subsequent crater and instantaneous evaporation of the workpiece, are considered. For the material removal rate, an axisymmetric rectangular domain was utilized, while for the surface roughness, a rectangular domain where every discharge resides at the end of previous crater was considered. Simulated results obtained by solving the heat equation based on a finite element scheme suggested that results are more realistic by considering instantaneous evaporation of the material from the workpiece and the effect of residual heat generated from each spark. Good agreement between our model and previously published data validated the newly proposed models and demonstrate that instantaneous evaporation, as well as residual heat, provide more realistic predictions of the EDM process.

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