153 articole găsite pentru „engineer”.
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ALIAJE ECOLOGICE PE BAZA DE STANIU PENTRU APLICATII IN INDUSTRIA ELECTROTEHNICA
Dr. ing. Magdalena LUNGU, Ing. Nicolae STANCU, Dr. ing. Violeta TSAKIRIS, Fiz. Lucia LEONAT, Chim. Alexandra BRATULESCU, Fiz. Delia PATROI, Sorina MITREA, Mihai IORDOC, Aristofan TEISANU
Lucrarea prezinta rezultatele cercetarilor privind obtinerea prin turnare a unor aliaje ecologice de tip Sn-Bi-Sb pentru lipire moale in vederea inlocuirii unor aliaje toxice, cum ar fi cele din Sn-Pb 60-40 utilizate pana de curand. Folosirea Pb sau a materia…
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SIMULAREA NUMERICA 3D A REGIMULUI TERMIC CORESPUNZATOR FIRULUI DE CONTACT AL SUSPENSIEI CATENARE
Ing. Constantin-Florin OCOLEANU, Prof. dr. ing. Gheorghe MANOLEA, Ing. Iulian ENACHE
In lucrarea de fata sunt prezentate rezultatele simularii numerice 3D a regimului termic stationar corespunzator firului de contact al suspensiei catenare. Firul de contact utilizat este de tip TF 100, sectiune 100 mm2, folosit in sistemele de tractiune ele…
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MODELLING AND CHARACTERIZING NEW MULTIPHASE POLYMERIC COMPOSITES AS MATERIALS FOR HEATING SYSTEMS
Assoc. Prof. D. Luca Motoc, PhD Mitu Leonard
Lucrarea prezinta o parte din rezultatele experimentale si cele predic ionate, utilizand conceptele micromecanicii, ob inute si vizate pentru una dintre proprietat ile de material importante in ceea ce prives te dezvoltarea de materiale i structuri destina…
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Masurarea zgomotului electronic ca element important al tehnologiilor avansate
Prof. univ. dr. ing. Valentin Gutu
In lucrare se argumenteaza alegerea procedeului de masurare a zgomotului electronic prin metoda modulatiei. Este propusa si practic construita o instalatie de masurare a zgomotului propriu al amplificatoarelor operationale – dispozitive, pe larg utilizate in …
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COMPARATIVE DISCUSSION ABOUT THE DETERMINING METHODS OF THE STRESSES IN PLANE SLABS
Codrin PRECUPANU, Dan PRECUPANU, Ștefan OPREA
In this paper it is presented the necessity of intense developing of the finite differences method, highlighted by the authors since the first Congress of Numerical Calculus in Bruxelles 1992, at the determining of the stress state in plane structural element…
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MEANS FOR QUALITATIVE AND QUANTITATIVE DESCRIPTION OF THE CARDIO-PULMONARY SYSTEM OPERATION WITHIN IRREVERSIBLE THERMODYNAMICS WITH FINITE SPEED
Stoian PETRESCU, Monica COSTEA, Liliana TIMOFAN, Valeria PETRESCU
Illness and aging are irreversible processes, which inevitably affects us all. The answers to the questions how, why, and how much irreversible are the cardio-respiratory system processes, will allow improved design of artificial hearts and lungs (vital “spar…
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CURRENT RESEARCH DIRECTIONS IN BUILDING PHYSICS IMPROVING PERFORMANCE LEVELS FOR NEW OR RENOVATED BUILDINGS
Adrian RADU, Maricica VASILACHE, Marian PRUTEANU
In the present climatic, social and political conditions, the EU energy independence is emerging as a priority. Therefore, it set new levels of thermal protection minimum required and adapting buildings architecturally to achieve a maximum of energy efficienc…
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SOME ASPECTS CONCERNING THE DURABILITY OF SERVICE AND DEVELOPMENT IN THE BUILDING SECTOR
Horea SANDI
The paper is aimed to present some ideas on the connection between the strategies of development of a safe and reliable infrastruacture as a whole and the components pertaining to the built environment. After a brief look on the development of methods of stru…
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HIGH PERFORMANCE MAGNETIC DEVICES BASED ON NANOCRYSTALLINE MATERIALS
Andrei MARINESCU Horia GAVRILA, Ionel DUMBRAVA
During the last two decades remarkable advances occurred in the field of semiconductor devices and smart systems, by their miniaturization and performance increase. Consequently, the reduction of equipment energy consumption and dimensions has resulted. A maj…
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IMPLEMENTING PID CONTROLLER FOR A MOBILE PLATFORM
Mihai CRENGANIS, Octavian BOLOGA
This paper presents the steps taken to develop and tune a PID controller for a mobile platform built in the Department of Industrial Machinery & Equipment, of the Engineering Faculty of Sibiu. In a first phase, a brief description of the mobile robot is prese…
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DEVELOPING A MOBILE PLATFORM FOR EUROBOT 2015
Mihai CRENGANIS, Octavian BOLOGA
This paper presents the steps taken in the development of a mobile platform built in the Department of Industrial Machinery & Equipment, of the Engineering Faculty of Sibiu. In a first phase, a brief classification of mobile platforms is presented, followed b…
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PESTE 100 DE ANI DE AVIATIE IN ROMANIA. CONTRIBUTII ALE ROMANILOR IN AVIATIE IN TRECUT SI IN PREZENT
Ing. Calin GOLOGAN, Ing. Traian TOMESCU, Ing. Tudor TOMESCU (Germania), Arhitect Mihai ANDREI
Lucrarera prezinta aspecte privind inovarea in aeronautica si in principal contributiile romanilor de la inceputul secolului XX prin realizarile lui Traian Vuia, Aurel Vlaicu si Henri Coanda, urmate de cele ale inginerilor Radu Manicatide si Iosif Silimon c…
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APPILCABILITY PRINCIPLES OF THERMAL SPRAYING
Prof. Assoc. Eng. Mihaela POPESCU, Phd student Ibolyka BRAN, Dr. Eng. Radu Alexandru ROSU, Assist. Dr. Eng. Carmen OPRIS
Pulverizarea termica este un domeniu, folosit cu succes in ingineria suprafetei ,datorita versatilitatii si gamei largi de materiale de depunere utilizate (metalice, compozite,ceramice, aliaje cu memoria formei, cermeti). Se exemplifica interdisciplinaritatea…