1.572 articole găsite pentru „PER”.
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THE USE OF THE RADIOFREQUENCY FIELD IN MÖSSBAUER MEASUREMENTS
Ph. D. Dipl.Eng. Ion Bibicu
Aplicarea campurilor de radiofrecventa asupra materialelor feromagnetice induce efecte interesante asupra proprietăţilor acestor materiale. Una din metodele de studiu a ac estor efecte este spectroscopia Mossbauer. A fost realizată o instalaţie pentru aplicar…
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CONSIDERAȚII PRIVIND INSERȚIA PERSOANELOR CU DIZABILITĂȚI ȘI AVÂND O PREGĂTIRE INGINEREASCĂ SUPERIOARĂ, ÎN UNITĂȚI PROTEJATE AUTORIZATE DIN ROMÂNIA ÎN ANUL 2022
Dr. ing. Adrian PETRU
Lucrarea prezintă un studiu asupra informațiilor publicate de Autoritatea Națională pentru Protecția Drepturilor Persoanelor cu Dizabilități despre Unitățile Protejate Autorizate și integrarea profesională a persoanelor cu dizabilități, în special a celor cu …
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NOI CERCETĂRI EXPERIMENTALE ALE POZIȚIEI CVASI-VERTICALE DE CONDUCERE A AUTOMOBILULUI
Șef lucr. dr. ing. Viorel ȘIȘMAN
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STABILIREA PARAMETRILOR SPECIFICI MĂSURĂRII ARMONICE A ELEMENTELOR GEOMETRICE ALE ANGRENAJELOR EVOLVENTICE PRIN SIMULARE NUMERICĂ
Drd. ing. Dănuț Iulian STANCIU, Dr. ing. prof. univ. Gh. GHEORGHE, Dr. ing. Daniela CIOBOATA
Măsurarea armonică a parametrilor geometrici a angrenajelor cu profil evolventic este o metodă mult mai rapidă decât metodele tradiţionale de verificare, cu o precizie suficient de mare să poată fi aplicată cu succes în industria producătoare de roţi dinţate …
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ABORDARE SISTEMICĂ A DISPOZITIVELOR MEDICALE
Dispozitivul medical este un produs medical complex cu principalul scop de a asigura şi menţine sănătatea omului. Prin destinaţiile şi funcţiile avute, dispozitivul medical stabileşte multiple legături şi interconexiuni cu instituţiile din domeniul medical. Î…
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Workshop-ul naţional „Cercetare și expertiză inginerească la Constanţa” – ediţia a treia
Ing. Nicolae FILDAN, Membru al Consiliului Director AGIR, Președinte Sucursala AGIR Constanța
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PROIECTAREA ECHIPAMENTELOR SUB PRESIUNE CU CONSIDERAREA DETERIORĂRII PRODUSĂ DE FISURI
Valeriu V. JINESCU1,Vali-Ifigenia IORDĂCHESCU (NICOLOF)
Din procesul de fabricare rezultă microfisuri şi defecte în echipamentele sub presiune (EP). În prezent proiectarea echipamentelor sub presiune constă în: - proiectarea EP fără fisuri pe baza metodei analitice sau/şi a metodei cu elemente finite; - analiza ru…
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UPON ANALITICAL AND NUMERICAL CALCULUS OF THE MAIN PARAMETERS OF THE DETONATION PROCESS
Vasile NĂSTĂSESCU1,Ghiţă BÂRSAN
This paper presents some results of scientific research undertaken by the authors, regarding the numerical modeling of the detonation process, both the Finite Element Method (FEM) and the method of free particles, in version of Smoothed Particle Hydrodynamics…
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PREDICTIVE MAINTENANCE APPLIED TO LASTING EQUIPMENT
Velicu ŞTEFAN, Ionel PĂUNESCU, Marius PARASCHIV, Paul Liviu PĂUNESCU
This paper highlights the research conducted for proactive maintenance application by analyzing vibration and temperature monitoring during equipment operation, a method that provides a beneficial way clear, comprehensive and thorough to maintain normal opera…
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DYNAMICAL BEHAVIOR OF HARDWOOD SPECIES SUBJECTED TO CYCLIC BENDING STRESSES
Mariana Domnica STANCIU, Ioan CURTU, Adriana SAVIN
Hardwood species as beech, maple, cherry, alder are used in common application such furniture, musical instruments, ornaments in automotive construction, panels and floors. The stresses vary in time as intensity, duration and type. From this point of view, so…
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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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SOME ASPECTS REGARDING STRESS WAVE PROPAGATION IN TRONCONICAL SHORT BARS WITH VARIABLE ANGLE
Nicolae ILIESCU, Vasile NĂSTĂSESCU, Costică ATANASIU
In the first part of the paper an algorithm of calculus, using FEM, developed by the authors in a previous paper, is presented. This computational algorithm was applied in the study of stresses wave propagation produced by an axial impact in a tronconical sho…
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ASPECTS ON THE DESIGN AND IMPLEMENTATION OF A TRACKED MINI-ROBOT WITH ELECTRIC ACTIONING OBTAINED FROM SOLAR ENERGY CAPTURE
Silviu-Mihai PETRIŞOR, Cosmin-Iulian GRIGORAŞ
The authors of this paper wish to highlight elements regarding the organology, functioning and simulation, in a real workspace, of a tracked mini-robot with electric actioning obtained from solar energy capture with a load of explosives attached a technologic…
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RESEARCHES ON IMPROVING THE MANUFACTURING ACCURACY OF CNC CUTTING MACHINES
Cristina BIRIŞ, Octavian BOLOGA, Claudia GÎRJOB
This paper presents the experimental researches results carried out to optimize the dynamic behaviour of a NC machine-tool regarding the cutting precision. The aim is to detail the influence of the numerical control equipment setup on the size of the contouri…
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NEW RESEARCH ON COMPOSITE MATERIALS AT THE METAL FORMING RESEARCH CENTRE
Claudia GÎRJOB, Octavian BOLOGA, Gabriel RACZ, Cristina BIRIS
The Metal Forming Research Centre functions as separate research unit within "Lucian Blaga" University of Sibiu, Romania. This is one of the first centres of its kind in Romanian higher education system and emerged under the aegis of the European inter-univer…
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EFFICIENT COMPUTATIONS WITH STRUCTURED MATRIX PENCILS IN AUTOMATIC CONTROL
Vasile SIMA
There is a continuous research effort worldwide to improve the reliability, efficiency, and accuracy of numerical calculations in various domains. One of the most promising research avenue is to exploit the structural properties of the mathematical problems t…
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COMPUTING SYSTEMS MULTI-OBJECTIVE OPTIMIZATION USING DOMAIN-KNOWLEDGE
Lucian N. VINȚAN
The main aim of this short paper is to point out the advanced computing systems’ optimization research developed by The Advanced Computer Architecture and Processing Systems Research Centre (ACAPS) from “Lucian Blaga” University of Sibiu, Romania. Multi-objec…
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CONTROL AND COORDINATION OF ECONOMIC AND INTELLECTUAL ACTIVITIES BY INTEGRATED COMPLEX STRUCTURES
Constantin MARIN
This paper belongs to the category of research for the development and implementation of heterogeneous structures they apply favorable inclusion of the human factor for control and coordination of complex activities from various fields: economic, intellectual…
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A SOCIO-ECONOMIC REGULARITY ESTABLISHED BASED ON AN ANALOGY WITH THERMODYNAMIC PROCESSES WITH FINITE SPEED - An Equation for Standard of Living -
Ioan GANEA, Adrian S. PETRESCU, Liliana TIMOFAN , Stoian PETRESCU, Monica COSTEA
This paper proposes a quantitative description of the flows of energy, mass and information in a country, based on recently developed concepts in Thermodynamics with Finite Speed. An equation for Standard of Living is derived. As shown in the ‘70 by Georgescu…
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DISCOVERY OF “QUANTUM NUMBERS” IN THE CARDIOPULMONARY INTERACTION STUDIED IN THERMODYNAMICS WITH FINITE SPEED
Stoian PETRESCU, Valeria PETRESCU , Monica COSTEA, Liliana TIMOFAN, Silvia DANES, Georgeta BOTEZ
The paper proposes an extension of Thermodynamics with Finite Speed (TFS) to Biological Systems, with Cardio-Pulmonary System study as the first objective. It is an extremely important system in the functioning of any blood beings (including humans). For stat…