Enhancing multi-response performance of AA2014 hybrid AMMC using TOPSIS algorithm on spark erosion machineGanesan Raj Kumar, Lakshmanan Selvarajan, Chandrasekaran Arun and Shanmugakani Senthil KumarMetall. Res. Technol., 122 4 (2025) 407DOI: https://doi.org/10.1051/metal/2025039