TY - CPAPER AU - Gheorghe Amza AU - Valentin Dan Petrescu AU - Dan Florin Nitoi AU - Agustin Semenescu AU - Oana Roxana Chivu TI - CONTRIBUTIONS OF THE ULTRASOUND FIELD INFLUENCE ON CHEMICAL COMPOSITION CHANGE IN THE REWORKING PROCESS BY ULTRASONIC WELDING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies PY - 2017 SP - 67 EP - 74 DO - 10.5593/sgem2017/41/s18.009 PB - STEF92 Technology ER -