A study on electrical discharge machining of ZrB2-SiC composite using grey entropy analysis

Author

Dadsena, K.K. ; Sivasankar, S. ; Jeyapaul, C.R.

Author_Institution

Dept. of Production Eng., Nat. Inst. of Technol., Tiruchirappalli, India

fYear

2013

fDate

12-14 April 2013

Firstpage

1

Lastpage

6

Abstract

In general, ceramic components are manufactured through powder metallurgy route at net shaped production, but special feature like holes of smaller diameter at different orientation is not possible to produce by this technique. Hence machining becomes inevitable. In this work machinability behavior of 85% ZrB₂+15% SiC during Electric Discharge Machining (EDM) with different tool material is carried out. The output responses are material removal rate, tool wear rate, roughness, roundness, taper angle and over cut. Entropy based grey relational analysis is applied for optimization of Pulse on time and off time. The tools are rated in the order of Titanium, Tungsten, Tantalum, Graphite and Niobium. Pulse on time of 7μs and pulse off time 1μs are selected as the best machining condition.

Keywords

ceramics; composite materials; electrical discharge machining; entropy; grey systems; machinability; machine tools; powder metallurgy; surface roughness; wear; EDM; ZrB₂-SiC composite; ZrB₂SiC; ceramic component manufacturing; electrical discharge machining; entropy based grey relational analysis; graphite; grey entropy analysis; hole feature; hole orientation; machinability behavior; machining condition; material removal rate; net shaped production; niobium; over cut; powder metallurgy; pulse off time optimization; pulse on time optimization; roughness; roundness; tantalum; taper angle; time 1 mus; time 7 mus; titanium; tool material; tool wear rate; tungsten; Ceramics; Entropy; Machining; Mathematical model; Niobium; Weight measurement; Ceramic; EDM; Entropy grey; Grey relational grade; composites;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Systems (SCES), 2013 Students Conference on

Conference_Location

Allahabad

Print_ISBN

978-1-4673-5628-2

Type

conf

DOI

10.1109/SCES.2013.6547497

Filename

6547497