Title: Machining parameters optimisation in turning of GFRP composites by desirability function analysis embedded with Taguchi method

Authors: Syed Altaf Hussain; V. Pandurangadu; K. Palani Kumar

Addresses: Department of Mechanical Engineering, RGM College of Engineering and Technology, Nandyal-518501, India ' Department of Mechanical Engineering, JNTU College of Engineering, Anantapur, Anantapuramu-515002, India ' Department of Mechanical Engineering, Sri Sai Ram Institute of Technology, Chennai-44, India

Abstract: The increase use of glass fibre reinforced polymer (GFRP) composites in recent years has led to an increased demand for machining. Accordingly, the need for accurate machining of composite has increased enormously. This paper presents optimisation of machining parameters in turning of GFRP composites with multi-response criteria-based desirability function analysis (DFA) combined with Taguchi method. Turning experiments were performed based on Taguchi's L25 orthogonal array on an all-geared lathe using cubic born nitride (CBN) tool insert. The machining parameters such as cutting speed, feed, depth of cut and fibre orientation angle (work piece) are optimised by considering multiple response characteristics namely surface roughness, cutting force, specific cutting pressure and cutting power. A composite desirability value is obtained for the multi-responses using individual desirability values from the desirability function analysis. Based on composite desirability value, the optimum levels of parameters have been identified and significant contributions of parameters were determined by analysis of variance. Finally, confirmation experiments were performed for the optimal combination of machining parameters and the significant improvement has been noticed.

Keywords: desirability function analysis; DFA; GFRP composites; glass fibre reinforced polymer; CBN tool inserts; ANOVA; machining parameters; parameter optimisation; composites turning; Taguchi methods; orthogonal arrays; cubic born nitride; cutting speed; feed; depth of cut; fibre orientation angle; surface roughness; cutting force; cutting pressure; cutting power.

DOI: 10.1504/IJMMM.2015.070919

International Journal of Machining and Machinability of Materials, 2015 Vol.17 No.2, pp.95 - 107

Received: 18 Nov 2014
Accepted: 27 Jan 2015

Published online: 27 Jul 2015 *

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