Multi-objective optimization in end milling of GFRP composites using Taguchi techniques with principal component analysis

• Published in: Multidiscipline modeling in materials and structures 2017-01, Vol.13 (1), p.58-70
• Main Authors: Jenarthanan, M.P, Gokulakrishnan, R, Jagannaath, B, Ganesh Raj, P
• Format: Article
• Language: English
• Subjects: Advanced manufacturing technologies; Aircraft; Aluminum; Corrosion; Cutting; Cutting force; Cutting parameters; Cutting tools; Delamination; Design criteria; Design of experiments; Design optimization; End milling cutters; Feed rate; Fly ash; Glass fiber reinforced plastics; Graphite; Machine tools; Machining; Manufacturing; Materials science; Mechanical engineering; Metals; Milling (machining); Multiple objective analysis; Neural networks; Optimization techniques; Polymers; Principal components analysis; Quality; Skin; Stainless steel; Surface roughness; Variance; Variance analysis; Welding; Wind
• ISSN: 1573-6105; 1573-6113
• DOI: 10.1108/MMMS-02-2016-0007

Purpose The purpose of this paper is to find out the optimum machining parameters using Taguchi technique with principal component analysis (PCA) during end milling of GFRP composites. Design/methodology/approach In multi-objective optimization, weight criteria of each objective are important for producing better and accurate solutions. This method has been employed for simultaneous minimization of surface roughness, cutting force and delamination factor. Experiments were planned using Taguchi’s orthogonal array with the machining parameters, namely, helix angle of the end mill cutter, spindle speed, feed rate and depth of cut were optimized with considerations of multiple response characteristics, including machining force, surface roughness and delamination as the responses. PCA is adopted to find the weight factors involved for all objectives. Finally analysis of variance concept is employed on multi-SN ratio to find out the relative significance of machining parameter in terms of their percentage contribution. Findings The multi-SN ratio is achieved by the product of weight factor and SN ratio to the performance characteristics in the utility concept. The results show that a combination of machining parameters for the optimized results has helix angle of 35°, machining speed of 4,000 m/min, feed rate of 750 mm/rev and depth of cut of 2.0 mm. Originality/value Effect of milling of GFRP composites on delamination factor, surface roughness and machining force with various helix angle solid carbide end mill has not been analysed yet using PCA techniques.