2010 fascicula8 nr2

 

@ Universitatea "Dunărea de Jos" din Galați - Facultatea de Inginerie

Înregistrări recente

  • Multipurpose Ecological Lubricating Greases 

    Florea, Ortansa; Luca, Marcel; Matei, Vasile (UDJG, 2010)
    Lubricants facilitate the effective operation of mechanical equipment, reducing friction and wear, but, in the same time, they are a large and diffuse pollution source, both on soil and in water. Eliminating or reducing ...

  • Research Issues on Punch - Circular Plate Elastic Contacts 

    Trandafir, Marius; Diaconescu, Emanuel (UDJG, 2010)
    Circular plates enter into the category of finite dimension bodies. Solutions regarding the displacements and stresses, which appear at the contact involving finite dimension bodies and also numerical and analytical results ...

  • The Presence of Hydrogen as Wear Environment for the Mechanical System of the Continuous Casting Equipment 

    Teletin, Claudiu; Spânu, Constantin; Crudu, Ion (UDJG, 2010)
    In the last years the continuous casting of the steel has a tremendous development. In the same time, the casting steel quality requirements become higher. The hydrogen as environment of the casting diminishes the steel ...

  • Numerical Modelling of 3D Impact 

    Stelian, Alaci; Diaconescu, Emanuel; Ciornei, Florina; Irimescu, Luminița; Cerlincă, Delia; Rusu, Ovidiu (UDJG, 2010)
    The paper presents a virtual device designed for studying tri-dimensional impact. The main goal of the work is to present a solution for finding the coefficient of restitution for the tri-dimensional case of a sphere ...

  • Characteristics of Material in Zone of Cut by Laser Cutting 

    Radovanovic, Miroslav (UDJG, 2010)
    The laser cutting is a cost effective technology. This process is based on melting and evaporating material in very small, a well-defined area and a blownout of the cut by the assist gas. Laser cutting processes make heat ...

  • The Influence of Biodiesel Fuels on Lubricity of Passenger Car Diesel Engine Oils 

    Petraru, Laura; Novotny-Farkas, Frantz (UDJG, 2010)
    The present paper mainly focuses on the physical and chemical impact of currently used and future biodiesel components on the performance of a typical low-sulphated-ash-phosphorus-sulphur (low SAPS) passenger car engine ...

  • Multiwall Carbon Nanotubes Coated with Iron (iii) Oxide and Improved Dispersion Method for Nanostructured Polymer Composites 

    Murărescu, Monica; Dima, Dumitru; Andrei, Gabriel; Roman, Igor; Chiculiță, Simona (UDJG, 2010)
    The aim of this paper is to describe a method of coating with ceramic molecular layer, in order to obtain a MWCNTs (multiwall carbon nanotubes) functionalized surface, chemical bond energy increase and physico-chemical ...

  • Upon Fretting Behaviour in a Hertzian Point Contact 

    Irimescu, Luminita; Ciornei, Florina; Berthier, Yves (UDJG, 2010)
    Fretting is known as a wear process occurring in a small amplitude cyclic motion of two solid contacting surfaces and it can affect the fatigue resistance of the material, inducing wear and cracking. The kinematics ...

  • Microdefects Analysis of Dental Contact Surfaces 

    Frunza, Gheorghe; Frunza, Mihai Cătălin; Suciu, Cornel (UDJG, 2010)
    The tribological processes influence the behaviour of the biocontacts between biological bodies, between biomaterials or between biological bodies and biomaterials. Whether natural or artificial, any biocontact is the locus ...

  • Experimental Research for Measuring Friction Forces from Rod Sealing at the Hydraulic Cylinders 

    Drumea, Petrin; Cristescu, Corneliu; Fatu, Aurelian; Hajjam, Mohamed (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 ...

  • Aspects Concerning Contact Stresses from a Dental Articulator Joint 

    Ciornei, Florina; Alaci, Stelian; Muscă, Ilie; Frunză, Gheorghe; Irimescu, Luminița; Cerlincă, Delia (UDJG, 2010)
    A dental articulator is a mechanical device, which simulates the temporomandibular joint (TMJ). The articulator is important because it replicates the basic revolve action of the upper and lower mandibles, as well as ...

  • Dynamic Response of Ship Hull Composite Laminated Shells to Explosive Pressure 

    Chirica, Ionel; Boazu, Doina; Beznea, Elena-Felicia; Shenoi, R.Ajit (UDJG, 2010)
    The paper presents selected results of a study concerning the protective capacity of ship hull structures made of composite materials subjected to an explosion of a spherical charge. The main application of these structures ...

  • Tribological Aspects of Electrode-Elastomer Contact 

    Cârlescu, Vlad; Olaru, Dumitru; Prisăcaru, Gheorghe (UDJG, 2010)
    Dielectric elastomers (DE) are soft polymers based smart materials that may be potentially employed in applications such as actuation, sensing and energy harvesting. The performance of dielectric elastomer actuators (DEA) ...

  • The Neuber’s Rule and a Correlation Between Fretting Fatigue and Plain Fatigue 

    Buciumeanu, Mihaela; Palaghian, Liviu (UDJG, 2010)
    Based on these experimental observations and on the remark that any small change on the discontinuity geometry has a significant effect on the stress distribution around it, a stress concentration factor is mandatory to ...