Search
Now showing items 1-10 of 35
Investigation of Layers Formed Through Selective Transfer with Atomic Force Microscopy
(Universitatea ”Dunărea de Jos” din Galați, 2008)
Atomic force microscopy (AFM) has become a versatile tool for investigating local mechanical properties. In addition, through the AFM tip-couple interaction, it is possible to study the effects of perturbations and ...
On Tribological Behaviour of Thermo-Chemical Treated Steels after Thermo-Magnetic Treatments
(Universitatea ”Dunărea de Jos” din Galați, 2008)
The paper presents an analysis on two grades of steel, subjected to nitrocarburized or nitrided thermo-chemical treatment after different thermomagnetic treatments. Based on the concept of tribosystem, pairs of steel rollers ...
Some Aspects about Driving Wheel/Rail Contact in Steady State Interaction
(Universitatea ”Dunărea de Jos” din Galați, 2008)
The driving wheel/rail steady state interaction and the response to harmonic excitation were studied using a complex model for track. The starting point for numerical simulations is the Green matrix of the track. The ...
Experimental Investigations Concerning the Mathematical Model of Hard Deposits by High-Speed Flame Spraying
(Universitatea ”Dunărea de Jos” din Galați, 2008)
A complex study was done by the paper’s authors using some independent models that take into account the combustion process, the particles’ dynamics, the fluid dynamics and also the particle fluid transfer processes when ...
Experiences in Lubrication of non-Natural Gas Fuelled Stationary Engines
(Universitatea ”Dunărea de Jos” din Galați, 2008)
In Europe, a huge number of generators for electric power, powered by those stationary engines are becoming increasingly popular in regions where these renewable fuel sources are available. Nevertheless, the continuously ...
High-Speed Hybrid Angular Contact Ball Bearings Lubricated by Kerosene Mist
(Universitatea ”Dunărea de Jos” din Galați, 2008)
This paper presents some experimental research, carried-out on 7206C hybrid angular contact ball bearings lubricated by oil and kerosene mist. The monitored parameters are the friction moment of the testing bearing, and ...
Hip Joint Contact Pressure Distribution Pand After Triple Osteotomy
(Universitatea ”Dunărea de Jos” din Galați, 2008)
A 3−D reconstruction method based on CT scans was used to compute the femoral head coverage for dysplasic hips prior and after reconstruction surgery. The triple osteotomy technique was used to “reorient” the acetabulum ...
Research Rearding of Composite Materials under the Influence of Abrasive Wear
(Universitatea ”Dunărea de Jos” din Galați, 2008)
The method described in the paper will allow estimating the composite materials performances with different structures and various working conditions, with a view to estimate useful life of technological equipments parts ...
Test-Rig for Pressure Measurements in an Aerostatic Bearing
(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 ...
Hydrodynamic Effects of Texture Geometries on Journal Bearing Surfaces
(Universitatea ”Dunărea de Jos” din Galați, 2008)
Lately, the expanding range of tribological applications to the microscopic levels has revived interest in this field. Actually, little is understood about the subtle effects of variations of a journal bearing’s profile ...