TY - CPAPER AU - Dan NiĊ£oi TI - CONTRIBUTIONS REGARDING DETERMINATION THE POSSIBLE DEFECTS THAT OCCURS IN THE RECONDITIONING PROCESS BY ULTRASONIC WELDING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies PY - 2018 SP - 235 EP - 242 DO - 10.5593/sgem2018/4.1/s17.031 PB - STEF92 Technology ER -