A NEW CRITERION FOR DRILLING MACHINABILITY EVALUATION OF NANOCOMPOSITES MODIFIED BY GRAPHENE/CARBON FIBER EPOXY MATRIX AND OPTIMIZATION USING COMBINED COMPROMISE SOLUTION

Jogendra Kumar () and Rajesh Kumar Verma
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Jogendra Kumar: Materials & Morphology Laboratory, Department of Mechanical Engineering, Madan Mohan Malaviya University of Technology Gorakhpur, Uttar Pradesh - 273010, India
Rajesh Kumar Verma: Materials & Morphology Laboratory, Department of Mechanical Engineering, Madan Mohan Malaviya University of Technology Gorakhpur, Uttar Pradesh - 273010, India

Surface Review and Letters (SRL), 2021, vol. 28, issue 09, 1-19

Abstract: This article describes new control criteria and robust optimization methodology to balance drilling parameters and machining characteristics. Experimentation was performed according to response surface methodology (RSM) using a TiAlN coated SiC tool. The full drilling force signal and cutting parameters tested are categorized into five stages, indicating the drilling tool-workpiece interactions’ different statuses. Principal component analysis (PCA) assigns real response priority weight during the aggregation of conflicting characteristics. The hybrid module of combined compromise solution and PCA (CoCoSo–PCA) is used to decide the optimal parametric setting. It efficiently undertakes a trade-off between minimal thrust (Th=30.02N), torque (T=0.05Nm) surface roughness (Ra=1.55μm). A regression model between input parameters and output function was established using RSM quadratic model. The validation experiment shows significant improvement, and the proposed module can be recommended for quality-productivity characteristics control.

Keywords: Drilling; PCA; CoCoSo; CFRP; graphene oxide (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X21500827

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