Title: Surface roughness optimisation by the response surface methodology of AL7075 aviation alloy's external turning operation

Authors: Ömer Seçgin; M. Ziya Sogut

Addresses: Technology Faculty, Sakarya University of Applied Sciences, Sakarya, Turkey ' Maritime Faculty, Piri Reis University, Istanbul, Turkey

Abstract: Aluminium alloys are widely used in aircraft construction. In this study, surface roughness optimisation was performed in the external turning process of AL7075 aluminium alloy, which is frequently used in aviation applications. Cutting speed, feedrate and depth of cut are considered as processing parameters. Response surface methodology was used to create the mathematical modelling of surface roughness. Variance analysis was used to determine the effects of parameters on surface roughness. The predicted model for surface roughness obtained from the analysis shows good agreement with the experiment results. Parameter levels that should be used for optimum results: 40 mm/min cutting speed, 0.08 mm/rev feedrate and 0.5 mm cutting depth.

Keywords: AL7075; response surface methodology; RSM; surface roughness; turning; variance analysis.

DOI: 10.1504/IJSA.2022.10046149

International Journal of Sustainable Aviation, 2022 Vol.8 No.2, pp.152 - 161

Published online: 19 Apr 2022 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article