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Composites: Mechanics, Computations, Applications: An International Journal

ISSN Print: 2152-2057
ISSN Online: 2152-2073

Composites: Mechanics, Computations, Applications: An International Journal

DOI: 10.1615/CompMechComputApplIntJ.v7.i1.10
pages 1-16

PROCESS PARAMETER OPTIMIZATION IN DRILLING Al2O3- AND TiO2-FILLED GFRP COMPOSITES TO MINIMIZE THRUST FORCE AND DELAMINATION

Soumya Dash
School of Mechanical Engineering, KIIT University, Bhubaneswar, Odisha, India
R. K. Nayak
School of Mechanical Engineering, KIIT University, Bhubaneswar, Odisha, India
Bharat C. Routara
School of Mechanical Engineering, KIIT University, Bhubaneswar, Odisha, India

ABSTRACT

Glass fiber-reinforced (GFRP) composites differ from other metallic materials in their mechanical properties. A major drawback in these composites is the delamination damage which occurs due to the thrust force that is developed during drilling. This paper investigates the influence of machining parameters, cutting speed, feed rate, and diameter of tool, on the thrust force and delamination damage when drilling Al2O3- and TiO2-filled GFRP composites. It is necessary to find the optimal parameter combinations in drilling so that the thrust force (FT) and delamination (Fd) damage can be minimized. MINITAB 16 statistical software is used for optimization of process parameters. The Taguchi method and analysis of variance (ANOVA) are used to find the significance of each process parameters in drilling. From the results it was concluded that the cutting speed is the most significant factor influencing the FT while the tool diameter has a significant role in affecting Fd. Confirmation tests were also conducted for the optimal set of values obtained after the experiment. The present research work is helpful in choosing optimum values of parameter combinations that would minimize the FT and Fd as well as improve the quality of drilled hole significantly.