Analysis of defects on machined surfaces of aluminum alloy (Al 7075) using imaging and topographical techniquesAishah Najiah Dahnel, Muhamad Ali Abdul Ghani, Natasha A. Raof, Suhaily Mokhtar and Nor Khairusshima Muhamad KhairussalehInt. J. Metrol. Qual. Eng., 13 (2022) 12DOI: https://doi.org/10.1051/ijmqe/2022012