Căutare după Subiect "ultrasonic field"

Afișează articolele 1-4 of 4

    • Elements of Drawing Theory and Technology of the High Mechanical Strength Wires in Ultrasonic Field 

      Iliescu, Viorel; Susan, Mihai; Ștefănică, Gabriela Roxana; Achiței, Dragoș; Landkrammer, Brian Tudor (Universitatea "Dunărea de Jos" din Galați, 2009)
      In the paper are presented elements of drawing theory and technology of the high mechanical strength wires, when the auger die is located in the maximum of the waves oscillation and it is activated on drawing direction. ...

    • Grain Refinement in Aluminum Alloys by Acoustic Cavitation Phenomena 

      Moraru, Luminița (Universitatea "Dunărea de Jos" din Galați, 2007)
      In this article, ultrasonic method of transmitting forced vibrations to solidifying aluminum-alloy melts is presented. In the presence of well developed cavitation situations, a fine and homogeneous microstructure has ...

    • Ultrasound Action on Strength Properties of Polycrystalline Metals 

      Moraru, Luminița (Universitatea ”Dunărea de Jos” din Galați, 2006)
      The mechanical properties of pure aluminum were investigated by tensile test on the sample with average grain size between 60 and 1000 µ m. The stress strain functions given by the models are fitted to the measured points. ...

    • Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field 

      Susan, Mihai; Achiței, Cristian; Ștefanică, Roxana Gabriela; Gavrilă, Bogdan Lucian (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents the variation of mechanical characteristics of resistance and plasticity for thin wall tubes made of stainless steel 10TiNiCr180, processed in ultrasonic field. Decrease of mechanical characteristics ...