2003 fascicula14
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Capability and Quality of the Vibratory Rollers
(Universitatea "Dunărea de Jos" din Galaţi, 2003)In this paper are presented the global criterions of performance and the classification of vibratory rollers about these criterions. -
High-Performance Concretes-Behavior of Fresh Concrete
(Universitatea "Dunarea de Jos" din Galaţi, 2003)Most of the research in High-Performance Concretes (HPC) since the publication of the State-of-the-Art Report in 1990 has concentrated on increasing basic knowledge regarding HPC performance and properties rather than ... -
Precision Rectifier
(Universitatea "Dunărea de Jos" din Galaţi, 2003)Electric phenomena dependence of non electric one rises a lat of issues in design and running of electric and electronic equipments. So, this is basic problem of one of most dynamic field of measurements technique, represented ... -
Theoretichal Considerations about the Maximum Vibration Limits for Wheel Loader Affected by the Ground Conditions
(Universitatea "Dunarea de Jos" din Galaţi, 2003)In this paper, the author make a study of vibration (vertical acceleration) into wheel loader who is affected by the ground conditions. It is known from many studies and investigations, that the drive vibrations are ... -
An Original Solution for the Ground Support Mechanism of Compact Loaders
(Universitatea "Dunărea de Jos" din Galaţi, 2003)This paper presents constructional solution adoption draftworking gear, loader IC 04, assure existence every tyre, reaction non-vanishing. The evidence profitability solution suspension draft. -
The Wear Influence on the Working Condition
(Universitatea "Dunarea de jos' din Galaţi, 2003)During the operation, any machine, equipment, machine parts, or piece, is submitted to a wear. The evolution in time of the wear size, or, in other words, a real form for the characteristic of the wear depends on ... -
The Dynamics Analysis of the Forced Steady-State for the Vertical Towers Chillers with Internal Axial Flow Fan
(Universitatea "dunărea de Jos" din Galați, 2003)This study presents some of the phases of the physical and mathematical models' elaboration of the vertical tower chillers with a single axial flow fan, which are used in social and civil buildings to prepare conditioning air ... -
Quality Concrete - Performing Concrete Plants
(Universitatea "Dunărea de Jos' din Galați, 2003)The buildings compositions quality, as well as resistance, stability and durability imposed by the law 10/1995 depends by the quality of concrete who should fulfil the conditions imposed by the Practical Code NE 012/99. The ... -
Mechanization and Automation of the Construction Operations
(Universitatea "Dunărea de Jos' din Galați, 2003)Modernizing operating technologies is the major goal of the construction engineering in order to reduce or eliminate manual labor. The increase of operating efficiency of the construction industry is related to the ... -
Lifting Machinery the Efficiency Criterion
(Universitatea "Dunărea de Jos" din Galați, 2003)Using lifting and carrying machinery in various environments leads to a considerable variation of operating time and mechanical devices or metallic structure state of load. Lifting equipment is a cyclic operating device ... -
Using Dorrenberg Steel in Mchine Industry
(Universitatea "Dunareas de Jos" din Galați, 2003)The steels were, are and will be o long period of time the raw material in machine industry. Using of this materials implicate a very good technical performance for each type and theirs compatibility with the working ... -
Treating Propriety Through Cutting of Metals and Alloys in Cryogenic Condition
(Universitatea "Dunărea de Jos" din Galați, 2003)It is known that a base function of cutting environments is to cool the cutting tools, the tooled area and the material that is removed under the shape of chip. But it is also known that beginning with the increase of ... -
A Study Upon Traction Systems for Technological Machines with Auto Propulsion
(Universitatea "Dunărea de Jos" din Galați, 2003)This paperwork presents a comparison of traction systems used for heavy machines that needs to move on public roads. (construction devices, agriculture machines, etc.). Here are presented traction charts implemented on ... -
The Character of the Dynamic Processes in the Proportional Servodriving Systems of the Hydraulic Pumps Capacity
(Universitatea "Dunărea de Jos" din Galați, 2003)The proportional servodriving systems of hydraulics pump capacity are used in many more applications in tehnological equipments driving. Thus, the construction of specialized pumping hydraulics units, like the A10VG and ... -
About Dynamic Stability Analysis of the Power Regulators With Exactly Hyperbolic Characteristic
(Universitatea "Dunărea de Jos" din Galați, 2003)Power regulators are attached devices of hydraulic pumps with variable capacity. Theses have the means to modify the pump capacity depending of the pressure from the circuit served by the pump. In this way, it result ... -
Dynamic of Industrial Tractors with THM for Construction
(Universitatea "Dunărea de Jos" din Galaţi, 2003)Traction calculus is done to determine the main parameters of the equipment’ s engine and transmission designed to achieve the performances imposed in exploitation [1, 2, 3]. One of the base problem of the traction ... -
Friction Coupling and Specific Phenomena
(Universitatea "Dunarea de Jos" din Galați, 2003)The present work object is to make the transitory conditions evolution evident,in coupling, by considering the friction moment which depends on angular speed. The friction moment is considered to be dependent on the relative ...
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