Ultrasonic Sensor Signals and Optimum Path Forest Classifier for the Microstructural Characterization of Thermally-Aged Inconel 625 Alloy. - Victor Hugo C. de Albuquerque; Cleisson V. Barbosa; Cleiton C. Silva; Elineudo P. de Moura; Pedro Pedrosa Rebouças Filho; João P. Papa; João Manuel R. S. Tavares (Sensors, 2015)