Universiti Teknologi Malaysia Institutional Repository

Evaluating the electrical discharge machining (EDM) parameters with using carbon nanotubes

Sari, M. M. and Mohd. Yusof, Noordin and Brusa, E. (2012) Evaluating the electrical discharge machining (EDM) parameters with using carbon nanotubes. IOP Conference Series: Materials Science and Engineering, 40 (1). ISSN 1757-8981

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Official URL: http://dx.doi.org/10.1088/1757-899X/40/1/012019

Abstract

Electrical discharge machining (EDM) is one of the most accurate non traditional manufacturing processes available for creating tiny apertures, complex or simple shapes and geometries within parts and assemblies. Performance of the EDM process is usually evaluated in terms of surface roughness, existence of cracks, voids and recast layer on the surface of product, after machining. Unfortunately, the high heat generated on the electrically discharged material during the EDM process decreases the quality of products. Carbon nanotubes display unexpected strength and unique electrical and thermal properties. Multi-wall carbon nanotubes are therefore on purpose added to the dielectric used in the EDM process to improve its performance when machining the AISI H13 tool steel, by means of copper electrodes. Some EDM parameters such as material removal rate, electrode wear rate, surface roughness and recast layer are here first evaluated, then compared to the outcome of EDM performed without using nanotubes mixed to the dielectric. Independent variables investigated are pulse on time, peak current and interval time. Experimental evidences show that EDM process operated by mixing multi-wall carbon nanotubes within the dielectric looks more efficient, particularly if machining parameters are set at low pulse of energy.

Item Type:Article
Uncontrolled Keywords:Materials science
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mechanical Engineering
ID Code:46940
Deposited By: Haliza Zainal
Deposited On:22 Jun 2015 05:56
Last Modified:27 Sep 2017 03:24

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