Detection of Localized Bearing Faults in Induction Machines by Spectral Kurtosis and Envelope Analysis of Stator Current. - Valeria C. M. N. Leite; Jonas Guedes Borges da Silva; Giscard Francimeire Cintra Veloso; Luiz Eduardo Borges da Silva; Germano Lambert-Torres; Erik Leandro Bonaldi; Levy Ely de Lacerda de Oliveira (IEEE Trans. Ind. Electron., 2015)