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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.
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 ...
Shear Stability as Oils’ Performance Indicator
(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 ...
Influence of Shear Stability on Oils Behaviour
(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 ...
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 ...
Diagniosis of the Technical State of Complex Mechanical Systems
(Universitatea "Dunărea de Jos" din Galaţi, 2007)
The paper presents a model for prediction and diagnosis of technical state of complex mechanical systems based on the systems theory. In diagnosis studies is used a model that has only input and output parameters as a ...
A Comparation of Standardized Methods for Lubrication Failure Determination
(Universitatea "Dunărea de Jos" din Galaţi, 2007)
Lubricants are used to prevent wear between moving parts and to resist to high pressure between them. There are standardized testing methods that determinate the wear of the contact pair pieces and the pressure that leads ...
Study of Wear Evolution for a Hydraulic Oil Using a Four Ball Tester
(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 ...
Tribological Testing Programs for Uhmwpe Matrix Composites
(Universitatea ”Dunărea de Jos” din Galați, 2009)
This paper aims to review the knowledge on materials and tribology of the ultra high molecular weight polyethylene (UHMWPE) composites. The various mechanisms proposed for the wear behaviour of UHMWPE are closely associated ...
Surface Roughness Parameters Evaluation in Rolling/Sliding Wear TestsS
(UDJG, 2011)
Rolling/sliding wear tests were performed on an Amsler test rig. Normal load (expressed as the Hertzian pressure) and the roll-slide ratio have been considered to have the most important influence in simulating gear ...