Căutare Fascicula VIII după Titlu
Afișează articolele 37-56 of 160
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Experimental Preliminary Research Regarding Normally and Tangentially Loaded Contacts
(UDJG, 2011)The purpose of this paper is to determine the contact area for a contact between a steel sphere and a sapphire disk loaded normally and tangentially, using laser profilometry. For this, was used an experimental device ... -
Experimental Research for Measuring Friction Forces from Rod Sealing at the Hydraulic Cylinders
(UDJG, 2010)The paper presents experimental equipment and research results conducted by Hydraulics and Pneumatics Research Institute INOE 2000-IHP Romania in cooperation with Institute PPRIME – University of Poitiers France, in order ... -
Experimental Studies Concerning Damage of Two Lubricant Greases in Severe Working Conditions
(Universitatea ”Dunărea de Jos” din Galați, 2006)In this paper certain results regarding behavior of two greases used in lubrication of rolling and rolling-sliding tribosystems are presented. For this aim, a specialised stand has been used. The experimental tests were ... -
Experimental Study of Friction Losses in Ball Screws
(Universitatea ”Dunărea de Jos” din Galați, 2009)In contrast with conventional sliding lead screws, ball screws with rolling friction between the screw and nut have high efficiency, accurate positioning and smooth, quiet operation at low friction that make this kind of ... -
Experimental Study on Roughness Parameters Variation, During Running – in Period, for a Cylinder-Plane Friction Couple
(Universitatea ”Dunărea de Jos” din Galați, 2008)The studies of various lubrication problems have been recently focused on atypical geometrical and operating conditions (extreme conditions). Among these cases, one can find analyses of HD bearings having surface macroscopic ... -
Experimental Study on Roughness Parameters Variation, During Running – in Period, for a Cylinder-Plane Friction Couple
(2008)The studies of various lubrication problems have been recently focused on atypical geometrical and operating conditions (extreme conditions). Among these cases, one can find analyses of HD bearings having surface macroscopic ... -
Experimental Validation of a New Dispersion Method of Additive Particles into Polymer Matrix Composites
(Universitatea ”Dunărea de Jos” din Galați, 2009)The general expected properties of the composite materials are the result of the efficient reinforcement distribution of nanometric particles, one of the most important methods considers their dispersion. The aim of this ... -
Fabric Reinforced Filled Epoxy Composites
(Universitatea ”Dunărea de Jos” din Galați, 2009)Among composites, the polymer matrix ones are the cheapest and the easiest to form but they show major disadvantages such as poor electrical and thermal conductivity, low fire resistance etc. In the case of any composite, ... -
Failure of a Total Knee Prosthesis Tibial Tray Due to the Fatigue Wear
(Universitatea ”Dunărea de Jos” din Galați, 2006)Some studies report the failure of a tibial insert of knee prostheses due to the subsurface cracking and delamination wear [1]. The present study starts by analysing retrieved total knee prosthesis revealing the loss of a ... -
A Fast Numerical Method to Predict Elastic Fields Due to Eigenstrains in an Isotropic Half-Space PartII. Program Validation and Simulations
(Universitatea ”Dunărea de Jos” din Galați, 2009)A fast algorithm to solve the inclusion problem for arbitrarily shaped eigenstrains is validated in this paper. Influence coefficients formulas and numerical predictions for elastic fields due to a spherical region of ... -
A Fast Numerical Method to Predict Elastic Fields due to Eigenstrains in an Isotropic Half-Space Part I: Algorithm Overview
(Universitatea ”Dunărea de Jos” din Galați, 2009)A fast algorithm to predict elastic fields due to arbitrarily shaped eigenstrains in an elastic, isotropic half-space is advanced in this paper. The inclusion domain is partitioned in a set of cuboids of uniform eigenstrains, ... -
Fatigue Sensitivity Analysis of a Ship Structural Detail
(Universitatea ”Dunărea de Jos” din Galați, 2009)In the paper, a FEM analysis used for fatigue assessment, based on the rules, was done. The approach for fatigue assessment in the early design stage of the ship structure has been developed. To overcome the challenges due ... -
Flammability Test Data in Risk Assessment
(Universitatea ”Dunărea de Jos” din Galați, 2008)This paper reviews the most recent information on standards dealing with testing fire-resistance of hydraulic fluids in order to emphasis the importance of selecting hydraulic fluids including as basic criteria of reducing ... -
Flammability Tests on Hot Surfaces for Industrial Fluids
(Universitatea "Dunărea de Jos" din Galaţi, 2007)Industrial fluids have to be evaluated not only for their performances as load capacity, durability, but also for their potential risk including ignition. Based on a solid documentation the authors point out the significance ... -
Friction in the Microtribosystems.Influence of Condensed Water
(Universitatea ”Dunărea de Jos” din Galați, 2009)To evaluate the influence of condensed water on the rolling friction in the microtribosystems, the authors used a micro tribometer consisting in a driving rotational disc in contact with 3 microballs which sustain an ... -
Global Method Using Experimental Data for Characterizing the Lubricants Durability
(Universitatea ”Dunărea de Jos” din Galați, 2008)The paper presents a global method for characterizing the durability of lubricants, in order to establish the moment of changing, using objectives criteria. Three types of lubricants, for essence and Diesel engine, have ... -
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 ... -
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 ... -
Hydrogen Wear of the Slab Continuous Casting Guiding Tribosystems
(UDJG, 2011)The steel continuous casting equipment consists of a set of technical systems which, tribologically, may be regarded as tribological systems. The process model contains input –output, command and control parameters. Both ...
