A. Panda, A. K. Sahoo, I. Panigrahi and A. K. Rout 2022. Investigating Machinability in Hard Turning of AISI 52100 Bearing Steel Through Performance Measurement: QR, ANN and GRA Study . International Journal of Automotive and Mechanical Engineering. 15, 1 (Dec. 2022), 4935–4961. DOI:https://doi.org/10.15282/ijame.15.1.2018.5.0384.