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Overview on the Implementation of Tree Test Methods for Conformity Assessment of Fluids
(Universitatea ”Dunărea de Jos” din Galați, 2006)
This paper presents three test methods for conformity assessment of technical fluids, all included in international, European and Romanian standards and their relevance for work security and health.
Wear and Irreversible Entropy Generation in Dry Sliding
(Universitatea "Dunărea de Jos" din Galaţi, 2006)
This paper examines the relationship between wear and the generation of entropy
within the mechanically affected zone, MAZ, of a sliding material. It is postulated
that wear is related to irreversible entropy generation ...
Analysis of Wear Cutting Tools by Complex Powere-xponential Function for Finishing Turning of the Hardened Steel 20CRMO5 by Mixed Ceramic Tools
(Universitatea ”Dunărea de Jos” din Galați, 2006)
In this paper it is analised the dependence regression between flank wear tools or wear out of belt width on the back surface VB and cutting time t in the form of complex power-exponential regression equation for turning ...
The External Cylindrical Surface Rolling by Method of Cold Deformation
(Universitatea ”Dunărea de Jos” din Galați, 2006)
This report, by the shown methodology, tries to contribute to the effective solution of tasks in the field of studying and designing the processes and states. It also points out a possible way of achieving high techno-economical ...
Upon Friction on a Ball Bearing - Outer Raceway Contact - I. Uniform Loading of the Balls
(Universitatea ”Dunărea de Jos” din Galați, 2006)
The paper advances an analytical model to evaluate the effect of micro-slip on the friction losses at the interface of a normally loaded rolling contact. The model validation was done by comparing the theoretical results ...
Criterion of Transition in the Fretting Phenomenon Based on the Variabile Coefficient of Friction
(Universitatea ”Dunărea de Jos” din Galați, 2006)
Fretting is now fully identified as a small amplitude oscillatory motion which induces a harmonic tangential force between two surfaces in contact. It is related to three main processes, i.e. fretting-wear, fretting-fatigue ...
Hysteresis and Mechanical Fatigue
(Universitatea ”Dunărea de Jos” din Galați, 2006)
The material dumping, known also as inner friction or, simply hysteresis, is considered to be related to energy dissipation in the volume of a macro-continuous medium. This phenomenon takes place when a more or less ...
Some Special Features of the Elastic-Plastic Deformation of the Composite Electrolytic Platings
(Universitatea ”Dunărea de Jos” din Galați, 2006)
One brings the elastic particularises and figures of the deformation of composition of the iron-nickel and iron hedging’s to the micropression. This information makes it possible to explain the mechanism elastic and plastic ...
Tribological Behaviour of CO-CR-MO and Uhmwpe the Components of Intervertebral Disc Prosthesis
(Universitatea ”Dunărea de Jos” din Galați, 2006)
The Intervertebral Disc Prostheses consist of a modular system and his function is based on low intervertebral friction. As a result of friction forces acting to the spine structures, the intervetebral disc prostheses can ...
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 ...