Căutare după Autor "Ciortan, Sorin"

Afișează articolele 1-8 of 8

    • Electrochemical and Mechanical Changes on Fatigue Corrosion Damaged Surfaces 

      Băicean, Svetlana; Palaghian, Liviu; Ciortan, Sorin; Thompson, Mioara (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The paper presents some surfaces changes aspects in fatigue corrosion damage based on electrochemical, mechanical profilometry and microscopically analyze of cylindrical and plate steel specimens. The researches have ...

    • Influence of Shear Stability on Oils Behaviour 

      Ciortan, Sorin; Rîpă, Minodora; Chiculiță, Simona (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The paper presents a method to establish a link between the shear stability index and service behaviour of motor oils. A standardized method for shearing stability establishing is combined with appropriated curve fitting ...

    • Neural Networks Based Study of Friction Coefficient Variation in Sliding Bearings 

      Senatore, Adolfo; Ruggiero, Alessandro; Palade, Vasile; Ciortan, Sorin (Universitatea "Dunărea de Jos" din Galaţi, 2007)
      The paper presents the possibility of using the neural networks approach for the analysis of friction coefficient evolution in case of sliding bearings. Several non-metallic bearing materials are investigated, both with ...

    • Particularities of Rubber Lip Seals Used for Pneumatic Linear Drives 

      Podaru, Geanina; Ciortan, Sorin; Bîrsan, Iulian; Deleanu, Lorena (Universitatea ”Dunărea de Jos” din Galați, 2009)
      The paper presents some particular aspects of reciprocating rubber lip seals for pneumatic linear drives. This study is focused on the following tribological aspects: friction variation under linear velocity, determination ...

    • Shear Stability as Oils’ Performance Indicator 

      Ciortan, Sorin; Rîpă, Minodora; Chiculiță, Simona; Spânu, Constantin (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The paper presents a comparative analysis between the shear stability tests results and four ball tests results for some industrial oils. This correlation is used for establishing the way how the mechanical solicitations ...

    • Statistical Assessment of Surface Quality Using 3D Profilometry Parameters 

      Deleanu, Lorena; Andrei, Gabriel; Ciortan, Sorin; Cantaragiu, Alina; Besnea, Aida; Trufașu, Cătălin; Podaru, Geanina (Universitatea ”Dunărea de Jos” din Galați, 2009)
      he paper presents a statistical analysis for quality assessment of metallic surfaces and coating in order to use the conclusions for improving coating technology. Surface investigation was done with the help of a 3D ...

    • Study of Wear Evolution for a Hydraulic Oil Using a Four Ball Tester 

      Spânu, Constantin; Rîpă, Minodora; Ciortan, Sorin (Universitatea ”Dunărea de Jos” din Galați, 2008)
      Time is crucial for the wear of materials. Time of an experiment must be long enough to obtain an observable wear but no so long to make the experiments expensive. For determining anti-wear properties of the hydraulic oils ...

    • A Study on the Prediction of Stability Behaviour for Flexible Rotor in Journal Bearings 

      Ciortan, Sorin; Ruggiero, Alessandro; Senatore, Adolfo; Palade, Vasile (Universitatea "Dunărea de Jos" din Galaţi, 2007)
      The influence of the labyrinth seals on the dynamic behaviour of a flexible rotor in journal bearings is investigated. In particular a code which makes possible the determination of the stiffness and damping coefficients ...