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Afișează articolele 921-930 of 1945
Tribological Characteristics and Formation of Subsurface Structures of Cast FE-CR-C Alloys with Different Content of Copper, under Sliding Friction
(Universitatea ”Dunărea de Jos” din Galați, 2009)
Effect of copper contents (0%, 0.4%, and 14%) and modes of heat treatment on initial structure of Fe-Cr-C alloys (C~1.2%, Cr = 17…19%) and subsurface structure of friction layers and tribological characteristics of these ...
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 ...
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 ...
Rapeseed Oil Flammability on Hot Surface
(Universitatea ”Dunărea de Jos” din Galați, 2009)
The paper presents the tests and results upon rapeseed oil flammability on hot surface. The oil samples were obtained from a rapeseed oil after a dewaxing process. There were established temperature ranges for which the ...
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, ...
Measuring the Residual Stress of the Injection Moulded Polymeric Parts
(Universitatea ”Dunărea de Jos” din Galați, 2009)
The residual stresses are usually introduced during manufacturing, and are caused by processes such as molding. This paper presents how the authors determine the residual stresses for the flat plates from ABS, PP and PS ...
Torsional Analysis of Ship Hull Model
(Universitatea ”Dunărea de Jos” din Galați, 2009)
In this paper a new methodology (numerical and experimental) proposed to analyze the ship hull torsion is treated. The torsion analysis is performed on a scale model (1:50) of a container ship, made of composite material. ...
Clay/Epoxy Composites
(Universitatea ”Dunărea de Jos” din Galați, 2009)
Fillers are generally used to decrease the costs of a composite material but they are changing also some of composite’s properties due to their physical properties, their dimensions and their shapes. Filled polymer could ...
Preliminary Results on the use of Palm Oil and Shea Butter in Lubrication Process in Food Industry
(Universitatea ”Dunărea de Jos” din Galați, 2009)
In this study, vegetal oils (palm oil and shea butter) are analyzed for their uses in lubrication of mechanical part of machines in food industry. These vegetal oils were analyzed by X-ray diffraction and transmission ...
Postbuckling Behaviour of Composite Plates with Imperfections
(UDJG, 2010)
The aim of the work presented in this paper is to analyze the influence of the imperfections on the changes in the buckling behaviour of ship deck plates made of composite materials. Thus, parametric analysis of the ...