Căutare 2008 fascicula8 după Titlu

Afișează articolele 29-35 of 35

    • Test-Rig for Pressure Measurements in an Aerostatic Bearing 

      Muscă, Ilie (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The paper presents a test rig for local pressure investigation in an aerostatic or gasostatic bearing system. Using a simple and performant computer assisted measurement device, pressure evolution in lubrication area can ...

    • The Effect of Wiberg Angle on the Contact Pressure Pistribution in Natural and Artficial Joint 

      Tudor, Andrei; Parsu, Carmen; Sorina, Opriș (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The analogies and differences between the mechanical joints and the biological ones, in the presence of relative motion, are based on the pressure distribution. The paper analysed a numerical model of the pressure distribution ...

    • The Influence of the Applied Load on the Friction Coefficient of the Sintered Iron-Base Bearings 

      Teișanu, Cristina; Gheorghe, Ștefan; Tudor, Andrei; Ciupitu, Ion (Universitatea ”Dunărea de Jos” din Galați, 2008)
      In the recent years the iron base sintered bearings production was considerable increased at the expense of the copper based ones, due to the low cost and availability of the iron powders as well as the higher strength. ...

    • The Tool to Model through Micro Strain and Micro Cutting 

      Tache, Antonio; Tache, Carmen (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The cutter wear is analised by a single hard fixed particle (inclusion) in brittle material. The shakedown pressure of the inclusion contact is directly proportional to shear field stress of the cutter surface and is ...

    • Vegetal Oils as Lubricating Materials 

      Calomir, Camelia; Ștefănescu, Ioan; Chiriță, George (Universitatea ”Dunărea de Jos” din Galați, 2008)
      The success of vegetal oils is related to their biodegradability and reduced toxicity but a wide use is limited by their insufficient stability in time. Biodegradable oils have ecological advantages, being comparable or ...

    • Viscosity of Amorphous Molecular Substances 

      Diaconescu, Emanuel; Zegrean, Vlad Flaviu; Onciul Miron, Oana (Universitatea ”Dunărea de Jos” din Galați, 2008)
      Because the great majority of flow units in a liquid behave instantaneously in a solid-like manner, rheological properties of molecular liquids subjected to high pressures may be measured by using corresponding molecular ...

    • Wear Behaviour of the AL7175 Alloy under Different Bulk Stress States 

      Buciumeanu, Mihaela; Miranda, A.S; Silva, F.S (Universitatea ”Dunărea de Jos” din Galați, 2008)
      In what concerns the stresses involved in the process, most wear tests (namely those in the pin on disc and the pin on plate configurations) are usually solely concerned with the stress state in the contact originated by ...