Spectra Measurements Using Piezoelectric Diaphragms to Detect Burn in Grinding Process. - Danilo M. S. Ribeiro; Paulo Roberto de Aguiar; Luiz F. G. Fabiano; Doriana D'Addona; Fabricio Guimaraes Baptista; Eduardo C. Bianchi (IEEE Trans. Instrum. Meas., 2017)