Abstract
Article history: Received June 1 2013 Received in revised format July 15 2013 Accepted August 1 2013 Available online August 3 2013 This paper discusses the application of the Taguchi method to optimize the machining parameters for machining of GFRP composite in drilling for individual responses such as thrust force and delamination factor. Moreover, a multi-response performance characteristic is used for optimization of process parameters with application of grey relational analysis. An orthogonal array (L9), grey relational generation, grey relational coefficient and grey – fuzzy grade obtained from the grey relational analysis applied as performance index to solve the optimization problem of drilling parameters for GFRP composite. Taguchi orthogonal array, the signal-to-noise ratio, and the analysis of variance are used to investigate the optimal levels of cutting parameters. The confirmation tests are conducted to verify the results and it is observed that grey-fuzzy approach is efficient in determining the optimal cutting parameters. © 2013 Growing Science Ltd. All rights reserved
Highlights
Composite materials are engineering materials made from two or more constituent materials that remain separate and distinct on a macroscopic level while forming a single component
This paper discusses the application of the Taguchi method to optimize the machining parameters for machining of glass fiber-reinforced plastic (GFRP) composite in drilling for individual responses such as thrust force and delamination factor
An orthogonal array (L9), grey relational generation, grey relational coefficient and grey – fuzzy grade obtained from the grey relational analysis applied as performance index to solve the optimization problem of drilling parameters for GFRP composite
Summary
Composite materials are engineering materials made from two or more constituent materials that remain separate and distinct on a macroscopic level while forming a single component. Fiber reinforced composites are composed of fibers and a matrix. Fibers are the reinforcement and the main source of strength while matrix glues all the fibers together in shape and transfers stresses between the reinforcing fibers. The fibers carry the loads along their longitudinal directions. The glass fiber-reinforced plastic (GFRP) composites are widely used in many of engineering applications. Machining of such composites is highly necessary for the concern of precision and accuracy. Drilling is the one of machining operation where delamination or damage of composites occurs frequently. Thrust force is the most concern for delaminarion of composites. Latha and Senthilkumar (2009a, 2009b, 2010) analyzed the thrust force and surface roughness in drilling operation. Fuzzy rule-based model has been developed to predict the thrust force.
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