Title: Turning parameters optimisation for Inconel 800H under MQL environment based on Harris hawks optimisation algorithm coupled with TOPSIS method

Authors: H. Bharath; K. Venkatesan; S. Devendiran

Addresses: School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India ' School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India ' School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India

Abstract: In this study, turning operations were performed to optimise the surface roughness, cutting force, and residual stress. Trials were done on Inconel 800H using olive oil mixed with 0.20 wt % hexagonal boron nitride. Response surface methodology has established a link between input and machining responses. Harris hawk optimisation (HHO) was used to search for potential candidates for the solution. A technique for order preference by similarity to the ideal solution (TOPSIS) was used to detect the most viable compromise. The optimal results of TOPSIS-HHO are benchmarked with other metaheuristic algorithms. The results show that the optimum results and their responses found through experiments are R_a 0.2837 µm, F_z 137 N, and Res 406 MPa, which are less than a 10% average error on the predicted value. The HHO-TOPSIS showed an improvement in convergence rate by 9.57%, 12.04%, 11.73%, and 32.65% at the optimal determined values compared to other hybrid algorithms.

Keywords: Inconel 800H; minimum quantity lubrication; MQL; tool wear; Harris hawk optimisation; HHO; analysis of variance; ANOVA; TOPSIS.

DOI: 10.1504/IJMMM.2023.129589

International Journal of Machining and Machinability of Materials, 2023 Vol.25 No.1, pp.41 - 68

Received: 12 Aug 2022
Accepted: 23 Dec 2022
Published online: 15 Mar 2023 *