List of Articles Frahad Sajajid Article 1 - Design and Fabrication of a Longitudinal-Torsional Ultrasonic Transducer 20.1001.1.27170314.2017.6.1.3.4 Yahya Radi Najafabadi Reza Nosouhi Frahad Sajajid Journal of Modern Processes in Manufacturing and Production , Issue 1 , Year , Winter 2017
