Title: Experimental investigations of chemo-ultrasonic assisted magnetic abrasive finishing process

Authors: Nitesh Sihag; Prateek Kala; Pulak M. Pandey

Addresses: Department of Mechanical Engineering, IIT Delhi, Delhi 110016, India ' Department of Mechanical Engineering, IIT Delhi, Delhi 110016, India ' Department of Mechanical Engineering, IIT Delhi, Delhi 110016, India

Abstract: Chemo-ultrasonic assisted magnetic abrasive finishing (CUMAF) is a compound finishing process, which integrates the use of chemo-mechanical polishing (CMP), ultrasonic vibrations and magnetic abrasive finishing (MAF), to finish surfaces up to nanometre order within a short span of time. The present work is focused on design and fabrication of experimental set up to perform CUMAF. Using the developed set up, experiments were conducted on copper alloy work piece and the effects of five process parameters on percentage change in average surface roughness value (ΔRa) was recorded. The experiments were planned using response surface methodology. Experimental data were analysed using analysis of variance to understand contribution of various process factors and interactions on process response. Regression model was developed to predict the percentage change in surface roughness in terms of significant process factors and interactions. Further the developed model was validated and optimised using genetic algorithm to maximise the performance of the developed process.

Keywords: magnetic abrasive finishing; MAF; ultrasonic vibrations; chemical oxidation; surface roughness; optimisation; surface quality; chemical mechanical polishing; CMP; copper alloy; CUMAF; response surface methodology; RSM; genetic algorithms.

DOI: 10.1504/IJPTECH.2015.073822

International Journal of Precision Technology, 2015 Vol.5 No.3/4, pp.246 - 260

Available online: 23 Dec 2015 *

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