Electro-discharge machining of metal matrix composite materials

Shyha, Islam and Rudd, Mark (2016) Electro-discharge machining of metal matrix composite materials. Advances in Materials and Processing Technologies, 2 (2). pp. 235-244. ISSN 2374-068X

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Abstract

Following a review on the classification and applications of metal matrix composites (MMCs) and the use of unconventional machining processes to cut MMCs, the paper presents experimental results for electro-discharge machining of an aluminium matrix reinforced with silicon carbide particle composite. A modified fractional factorial experimental design based on Taguchi orthogonal array L9 was employed. This involved three control variables at three levels each, namely discharge current, spark gap and electrode type (varying size and geometry). Process responses included material removal rate (MRR), tool wear rate (TWR) and average surface roughness of the eroded surface. Maximum MRR/TWR ratio of 21.36 was achieved when 3 A and 10 μm discharge current and sparking gap respectively were used with 5 mm diameter solid electrode (with a corresponding R a of 1.8 μm).

Item Type:	Article
Uncontrolled Keywords:	Metal matrix composites, EDM
Subjects:	F200 Materials Science H200 Civil Engineering
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	John Coen
Date Deposited:	11 Aug 2020 14:48
Last Modified:	13 Aug 2020 07:49
URI:	http://nrl.northumbria.ac.uk/id/eprint/44060

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