http://arthra.ugal.ro/handle/20.500.14043/24759 2026-04-04T10:46:42Z http://arthra.ugal.ro/handle/20.500.14043/24775 Study on the influence of Sonic Generator Geometry on Acoustic Parameters Ștefan, Anca; Leopa, Adrian The acoustical parameters, dimensional determination and construction of sonic generator is described in the paper. The generator’s dimensional determination and construction show that the nozzle slot, the axial resonator slot and the distance between the nozzle and the resonator have adjustable dimensions and determine the results for the acoustical parameters of the sonic generator. Thus, due to this adjustment, the sonic generator can be set for certain geometrical parameters that determine the acoustical parameters required. The Annals of ''Dunarea de Jos'' University of Galati Fascicle XIV MECHANICAL ENGINEERING, ISSN 1224 - 5615 2010-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/24774 Filter Signals a First Step in Interpreting Experimental Results Leopa, Adrian After recording and storage of experimental data, a first step in their processing is filtering, ie, removal of parasitic components (noise) accompanying the signal due from other machines or equipment in service or system of units for purchase experimental data. The presence of noise in the signal acquired, can lead to misunderstandings of dynamic quantities obtained by processing experimental data. The Annals of ''Dunarea de Jos'' University of Galati Fascicle XIV MECHANICAL ENGINEERING, ISSN 1224 - 5615 2010-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/24773 A Method Used to Determin the Power Necessary for Hydraulic Excavators Hauk, Niculai This paper presents a method of verification in the design phase, the mechanical power necessary involvement hydraulic pumps for excavators with bucket reverse.Because, in the design phase the digging forces are not known, for a considered forces limit the equipment is capable for each simulated position. The Annals of ''Dunarea de Jos'' University of Galati Fascicle XIV MECHANICAL ENGINEERING, ISSN 1224 - 5615 2010-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/24772 Assembly Modeling Using Catia System Haraga, Georgeta; Ghelase, Daniela CATIA is one of the most performance graphics programs that has been created for the production of technical drawings in the 2d and 3d with a high precision. In this paper, we have presented a simple assembly that is a kitchen table. Elected assembly is composed of several component parts that are modelling in the CATIA Sketcher and Part Design modules. To carry out the final assembly made of the component parts brought into the contact module we have used CATIA Assembly Design. The Annals of ''Dunarea de Jos'' University of Galati Fascicle XIV MECHANICAL ENGINEERING, ISSN 1224 - 5615 2010-01-01T00:00:00Z