Solid Mechanics Institute of the Romanian Academy

Bucharest, Romania

Solid Mechanics Institute of the Romanian Academy

Bucharest, Romania
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Ionescu M.D.,National Research and Development Institute for Gas Turbine COMOTI | Marin D.,Solid Mechanics Institute of the Romanian Academy | Predincea N.,Polytechnic University of Bucharest
Advanced Materials Research | Year: 2012

The complex modeling and coordination program has been developed based on quality standards that are in line with the quality requirements specific to the production of turbojet engines and assures the guarantees and confidence of our European Partners in our ability to take part in complex international projects with high levels of scientific and technological difficulty. A particular feature of the project is the quality system integration. For this purpose, the hardware of the existing machine tools is modified to assure the active control of parameters and a report is issued on the actual parameters. The report printed on a barcode card accompanies the component throughout the technological workflow, assuring the traceability of the component history, and a quality report is issued. © (2012) Trans Tech Publications.


Marin D.,Solid Mechanics Institute of the Romanian Academy | Predincea N.,Polytechnic University of Bucharest
Advanced Materials Research | Year: 2012

To achieve high quality and productivity during continuous contouring, it is important to know how the two axes work together to move the machine in a circular or rectangular path. For this reason, we have analyzed circular and linear motion trajectories and the frequency response of the system during milling process. In the same time, is required to analyses simultaneously both mechanical and control subsystems. Based on these problems, the main objectives of this work have been defined to find a way to improve dimensional accuracy. © (2012) Trans Tech Publications.


Marin D.,Solid Mechanics Institute of the Romanian Academy | Predincea N.,Polytechnic University of Bucharest | Marin D.M.,Science Aeorofina S.A.
Advanced Materials Research | Year: 2012

Experimental modal analysis is quickly developed area of science in last years. Experimental approach for solving technical problems is a means to estimate or evaluate modal properties of a mechanical structure. The paper is focused at dynamic properties of milling centers, namely at the resonance frequencies and vibration shapes of a simplified tool-work piece system. All this properties are identified by measurements. The machine tool vibration was excited by impulse force and a response of excited vibration was recorded. The measurement points for vibration were selected at the spindle head, the table and the clamping device. The paper aims to present comparative results of theoretical studies with experimental results obtained from impact test to the machining centers. © (2012) Trans Tech Publications.

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