Căutare Fascicula VIII după Autor "Rîpă, Minodora"
Afișează articolele 1-9 of 9
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A Comparation of Standardized Methods for Lubrication Failure Determination
Spânu, Constantin; Rîpă, Minodora; Ştefănescu, Ioan; Deleanu, Lorena (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 ... -
Diagniosis of the Technical State of Complex Mechanical Systems
Crudu, Ion; Spânu, Constantin; Rîpă, Minodora; Teletin, Claudiu (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 ... -
Flammability Test Data in Risk Assessment
Deleanu, Lorena; Buzoianu, Dragoș; Crăciunoiu, Ștefan; Rîpă, Minodora; Spânu, Constantin (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
Deleanu, Lorena; Buzoianu, Dragoş; Rîpă, Minodora; Crăciunoiu, Ştefan; Drug, Adina (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 ... -
Influence of Shear Stability on Oils Behaviour
Ciortan, Sorin; Rîpă, Minodora; Chiculiță, Simona (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 ... -
Overview on the Implementation of Tree Test Methods for Conformity Assessment of Fluids
Rîpă, Minodora; Deleanu, Lorena; Chiculiță, Simona (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. -
Shear Stability as Oils’ Performance Indicator
Ciortan, Sorin; Rîpă, Minodora; Chiculiță, Simona; Spânu, Constantin (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 ... -
Study of Wear Evolution for a Hydraulic Oil Using a Four Ball Tester
Spânu, Constantin; Rîpă, Minodora; Ciortan, Sorin (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
Chiculiță, Simona; Rîpă, Minodora; Andrei, Gabriel (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 ...