An Experimental Study on Electro-Discharge Machining of Al2014/Al2O3 Composite

Vineet Dubey; Balbir Singh

doi:https://doi.org/10.51976/ijari.411643

Submit Manuscript Login / Register Subscribe

Home Page

Editorial Advisory Board

Mission, Aims & Scope

Current Issue

An Experimental Study on Electro-Discharge Machining of Al2014/Al2O3 Composite

Vineet Dubey, Balbir Singh

Vol 4 , Issue 1 , January - March 2016 | Pages: 294-300 | Research Paper

https://doi.org/10.51976/ijari.411643

Received: January 20, 2016 | Revised: February 10, 2016 | Accepted: February 28, 2016 | Published Online: March 15, 2016

Author Details ( * ) denotes Corresponding author

1. * Vineet Dubey, School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India (dubey.vin1324@gmail.com)

2. Balbir Singh, School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India

Aluminium metal matrix composites are possessing the properties such as light weight, good wear resistance, high stiffness etc. Due to unique combination of properties, these composites are replacing conventional materials in industries such as transport, civil aviation, recreation etc. However, wider applications are still marred by poor machinability by conventional machining processes, due to presence of hard reinforcements such Al2O3, SiC, B4C etc in the composite. Electro-discharge machining (EDM) is a potential advanced process for the machining for aluminium metal matrix composites (AlMMC). The present work encompasses an experimental investigation on electro-discharge machining of aluminium alloy 2014 reinforced with 10wt% Al2O3 particles (Al2014/Al2O3). The central composite rotatable design using response surface methodology (RSM) is used to formulate the design of experiment (DOE) to analyse the effects of EDM process parameters on the machining characteristics viz. material removal rate (MRR) and surface roughness(SR). The four process parameters namely current, pulse on time, pulse off timeand gap voltage are considered for the experimental study. Regression analysis is performed and the significance of the model developed is checked by analysis of variance (ANOVA). Results obtained are further optimized using desirability functions to maximize MRR and minimize SR. The recommended optimal conditions have been validated by performing the confirmatory experiment.

Keywords

EDM; MRR; SR; Aluminum Metal Matrix Composite (MMC); ANOVA.

M. K. Surappa, Aluminium matrix composites: challenges and opportunities. Sadhana, 2003, 28, 319– 334

A. Manna, B. Bhattacharyya, A study on different tooling system during machining of Al/SiC-MMC. Journal of Materials Processing Technology, 2000, 123, 476–482

P. C. Pandey, H.S. Shan, Modern Machining Processes; Tata McGraw Hill: New Delhi, India, 2008

H. Hocheng, W. T. Lei, H.S. Hsu, Preliminary study of material removal in electrical-discharge machining of SiC/Al. Journal of Materials Processing Technology, 1997, 63, 813–818.

Y.W. Seo, D. Kim, M. Ramulu, Electrical discharge machining of functionally graded 15–35Vol% SiCp/Al composites. Materials and Manufacturing Processes, 2006, 21, 479–487

N. Singh, K. Raghukandan, M. Rathinasabapathi, B.C. Pai, Electric discharge machining of Al–10%SiCP as- cast metal matrix composites. Journal of Materials Processing Technology, 2004, 155–156, 1653–1657.

S.S. Habib, Study of the parameters in electrical discharge machining through response surface, methodology approach. Applied Mathematical Modelling, 2009, 33(12), 4397–4407

B. Singh, S. Kumar, J. Kumar, Influences of Process Parameters on MRR Improvement in Simple and Powder- Mixed EDM of AA6061/10%SiC Composite, Materials and Manufacturing Processes, 2015, 1–10, 1532-2475