Anul VIII (2001), Nr. 1

Anghel Cornelia
INSTRUMENTE DE IDENTIFICARE PENTRU EVALUAREA VIBRAŢIILOR COMPRESOARELOR INDUSTRIALE DE AER DE 50 ŞI 100 M3/MIN CU AJUTORUL COMPUTERULUI
The present paper is the results of study in identification domain of Automatic Systems Parameters. The procedures and vibrations measuring apparaturs the block-scheme and graphic spectral representation are ilustrated.

Anghel Cornelia
PRELUCRAREA DATELOR EXPERIMENTALE PENTRU EVALUAREA VIBRAŢIILOR COMPRESOARELOR INDUSTRIALE DE AER DE 50 ŞI 100 M3/MIN CU AJUTORUL COMPUTERULUI
This paper presents the determination of elementary and high level statics characteristics, running programmson the computers whe can obtained the power spectral density of vibrations, represented their graphics evolutions and functionary frequency. Finnally we can determinated the values of autocorelation functions, autocavariance, Hanning Window and spectram for free group point and the compressors body.

Anghel Ioana; Anghel Cornelia
APLICAŢIILE ENERGIEI INFORMAŢIONALE ŞI ALE COEFICIENTULUI DE CORELAŢIE
The paper define notions information energy and information correlation starting with probability notions. Some property of this notions are established. Finally, a few practical applications was presented in the paper.

Gârlaşu Ştefan
CARACTERUL RELATIVIST AL LEGII INDUCŢIEI MAGNETOELECTRICE
In the paper a demonstration, that the low of the magneto electric induction is relativist, is ghiven. On the base of this law are the Lorentz transformations.

Gârlaşu Ştefan
VARIANTE ANALOGICE ALE TRANSFORMAŢIEI FOURIER
Analogic Variants of the related Fourier Transform. Fourier related transform are central importance in the diverse applications of science, engineering, and technology. Knowdlige an duse of real formulations make the necessity to call an real Fourier representations. Some Fourier related transform as real Fourier transform, cosinus and sinus transforms, Mellin transform, Laplace transform and generalized Fourier transform are represented and their use in practice.

Hălălaie Ioan
MODELAREA FENOMENELOR PARALELE. O ABORDARE FUNCŢIONALĂ AUTOMATE CELULARE.
The paper presents a model for some parallel phenomens (“the 100 monkeys problem” type); the model uses cellular automata as a tool. Whe propose a functional paradigm and whe argue why a generale model is not possible, but particular solutions can be found.

Nedelcu Dorian; Hău Aurelian; Tudora Ovidiu
MODULUL „ADAMS” PENTRU SIMULAREA CINEMATICĂ ŞI DINAMICĂ A MECANISMELOR INTEGRAT ÎN „MICROSTATION Ţ95”
ADAMS/MS is an package software integrated in CAD software MicroStation., which offer the possibility to work in the same interface, for designing and kinematics or dynamical analysis of the mecanisms. With this software an engineer can verify the correct function of the mechanism and find the design’s errors before manufacturing it.

Anghel Ştefan
SYROM 2001 – SIMPOZION INTERNAŢIONAL DE MARE PRESTIGIU ÎN DOMENIU TEORIEI MAŞINILOR ŞI A MECANISMELOR
The Eighth IFToMM International Szmposium on Linkages and Computer Aided Design Methods. Theory and Practice of Mechanisms – SYROM 2001, August 28-September 1, was organized by Romanian Association for the Theory of Machines and Mechanisms, Chair of the Theory of Mechanisms and Robots, University Politehnica of Bucarest, Romania. The present economic austerity available in our country creates a lot of obstacle for Organizing Committee and Romanian participants, but the SIROM 2001 was a successful International Symposium. The paper present a few personal opinions about works unfolding and Romanian or Resitean authors contributions.

Anghel Ştefan ; Anghel Cornelia
CONTRIBUŢII LA STABILIREA CORELAŢIEI DINTRE MECATRONICĂ ŞI EDUCAŢIE
Mechatronics is a new science of intelligent machines. The term mechatronics is a Japan patent (1972) and denote technological fusion of mechanics, electronics and computer-science. Mechatronics was born as a tehnology and has become a worldwide spread philosophy. With ecuation, mechatronics principles ai mat building a systemic thinking an dat developing team-work skills. Mechatronics education provided more flexibility in acting and thinking , basic properties of a market-economy agent. Some authors opinions about correlation between mechatronics and education in this paper is presented.

Anghel Ştefan
DETERMINAREA VARIAŢIEI FORŢEI DE DEŞURUBARE ÎN FUNCŢIE DE UNGHIUL MEDIU DE ÎNCLINARE A ELICEI FILETULUI
The paper presents a general expression of the unscrew force varying with the medium propeller inclination angle β and the convention friction angleφ1. With general expression obtain a diagram with a negative zone for β< φ1 and a positive zone for β> φ1. These zones permit explain the obtions of tehnical books authors for one or another expression of the unscrew force.

Anţilă Valeriu ; Holiga Alina
DATE EXPERIMENTALE PRIVIND COMPORTAREA LA RUPERE A ÎMBINĂRILOR OŢEL-ALUMINIU CU SECŢIUNI CONICE SUDATE PRIN FRECARE
Unsere eigenen Studien und Forschungen uber das schweissen der Stahl - Aluminium Verbindungen durch Reibung, mit konischen Schnit, wurden bei uns im Rahmen der Facultat fur Ingeneurwesen und in werschiedene Laboratorien im lande Gemacht. Weiter vurde ein Zikalus von wisenschaftliche Arbeiten mit den Ergebnissen dieser Studien und Forschungen gezeight. Es wurden experimentelle Daten erbracht durch Schweissen und Reissen bei Schneiden der Stahl-Aluminium Verbindungen mit φ 90 mm und φ 100mm die Hohe H der konischen Komponente aus Stahl war 40, 60 und 80 mm fur jeden Wert des genanten Durchmeseres. In dieser Arbeit Werden die Ergebnisse der Proben von Reissen bei Scheneiden und des Chauvenet Test zur Beurteilung der experimentellen Daten gezeigt.

Anţilă Valeriu ; Holiga Alina
INTERVALUL DE RUPERE LA FORFECARE A ÎMBINĂRILOR OŢEL-ALUMINIU CU SECŢIUNI CONICE SUDATE PRIN FRECARE
Es wurden eigene Forschungen und Studien uber das Schweissen durch Reibung der stahl Aluminium Verbindungen mit konischen Schnit gemacht. Schweissverbindungen mit φ 90 und φ 100 mm, Hofe H des Konus aus Stahl bzW 40,60,80mm fur jeden Wert des Durchmesser. Es wurden experimentellen Daten warden statistisch bearbeitet. Fur jeden Bereich von Durchmesser φ und Hofe H der konischen Komponente aus Stahl, wirt die tiefste und hochste Grenze identifiziert, zwischen welche die Werte der Reisskrafte bei Schneiden und festgestellt das 95% der Fahle sich in diesen Rahmen befinden, bei einer beliebingen Zahl von Proben. Nur bei 5% der Proben liegt diser Wert ausserhalb der erwahnten Grenzen.

Coman Liviu
CERCETĂRI EXPERIMENTALE PRIVIND PARAMETRI ELECTRICI AI CIRCUITULUI DE DESCĂRCARE LA AMBUTISAREA PRIN ELECTROIMPULSURI.
This paper presents a mathematical model for predicting the energy release law in the electrohidraulyc discharge chanel, having enough precision for industrial application and also usefull to determine the moust important electrical characteristics which defines transforming process of electrical energy in shock wave energy in the case of free discharge regime in liquid space.

Coman Liviu
STUDII TEORETICE PRIVIND PARAMETRI ELECTRICI AI CIRCUITULUI DE DESCĂRCARE LA AMBUTISAREA PRIN ELECTROIMPULSURI.
This paper presents some theoretical considerations related to the possibility of establishing the energy release law in the electrohidraulic discharge channel and so , of the electrical water discharge most important hidrodynamic specific features including pressure to the shock wave front . These could further be the basis for the development of prediction and obtimization sudies.

Ene Tudorel; Dumitriu Spiru Dorel
SUDAREA CAP LA CAP CU ELEMENT ÎNCĂLZITOR A ŢEVILOR DIN MATERIALE TERMOPLASTICE
This paper work present : principale of buttwelding with heater element of the thermoplastics pipes, welding equipament, parameters of the butt-welding throung pressure regime and the operations made in order to obtain butt-welding joint (preparation for welding, welding process, inspection of weld quality).

Ene Tudorel; Dumitriu Spiru Dorel
ÎMBINAREA PRIN ELECTROFUZIUNE A CONDUCTELOR DIN MATERIALE TERMOPLASTICE.
This paper work present : principle of thermoplastics pipes butt welding trough electrofusion, welding equipment, butt welding technology and accuracy control of this technology.

Ene Tudorel; Dumitriu Spiru Dorel
MONTAJUL CONDUCTELOR DIN POLIETILENĂ (PE) PENTRU REŢELELE DIN DISTRIBUŢIE A GAZELOR NATURALE
This paper work present : polyethylene pipes mounting procedures for natural gases distribution with include : constructional precautions, used materials and verification of those, underground pipes ditches execution of joints, change of direction mounting of pipes and fittings, marking direction of pipes and fill the ditches.

Hegedüş Marius
EXPERIMENTAL SIMULATION OF THE MILLING FORCES ON A COMPLEMENTARY ACTUATING SYSTEM (C.A.S.).
The paper presents the composition and the functioning way of an electrohydraulic authomatic system with servovalve and oscillating motor witch discharges the overloads of a worm gear used for positioning the milling head of a machine tool for processing complex spatial profiles in numerical command. The entire construction of a such milling head is presented as a Complementary Actuating System (C.A.S.) . A similar electrohydraulic system, but functioning as an opened one is used for simulating experimentally the milling forces. It is also presented a block scheme of implementing force simulating hydraulic system in the C.A.S.

Iancici Sava
SINTEZA GEOMETRICĂ A TRANSMISIEI ARMONICE DUBLE.
In this theses the geometric synthesis of the double harmonic transmission, considering as reference parameter the maximum radial deformation (W0) of the flexpline in presented. The characteristic geometric elements of harmonic double transmission gear pinion, with a gear ratio i=50 is shown

Iancici Sava
INFLUENŢA MOMENTULUI DE TORSIUNE ASUPRA PRECIZIEI CINEMATICE DE ORIENTARE ŞI A RAPORTULUI DE TRANSMITERE AL TRANSMISIEI ARMONICE DUBLE
In this thesis is presented the influence of the torsinal moment of the double harmonic transmission exit shafp upon the gear ratio und upon the cinematic precision of the transmission. The results of the experimental rescarch obtained for the harmonic double transmission of the different moments of torsion aplicated to the exit shaft mantaining the same rotating direction and rpm are shown.

Lungu Ioan; Hânda Petru
EVOLUŢIA ŞI STADIUL ACTUAL AL TEHNICII NC
This paper presents the aparation and the development of the NC (Numerical Control) concept, the actual state and the development tendencies of the NC system. There are pointed out the actual CNC system characteristics, the diferent perifepharical apparatus connection possibielities, to CNC as well as the system improvments, witch make the machine-tools more precise, more secure and more easy to command.

Lungu Ioan
EXTINDEREA PROCEDEELOR DE PRELUCRARE PE STRUNGURI CU COMANDĂ NUMERICĂ.
For the processing on a single machine-tool of the samples with revolution surface equipped with constructiv detalis witch need also piercing and eccentric milling processing, axal or radial, there were conceined and achived lates with numerical control, equipped with the numerical controlled main shaft and involved tools in the revolver head. The high autonomised lates also with enlarged processing posibilities are called lathe centers. These asure the user’s advantage of the processing finalising in a shorter time then that necessary for the processing on machine-tools. There is avoided the necessity of catching devices of the lathe afterwards processing.

Lungu Ioan
SISTEME DE SCULE PENTRU MAŞINI-UNELTE CU COMANDĂ NUMERICĂ
The numeral control machine-tools is decidet by the capacity and the safety of the used tools. A gregat importance has the toll system flexibility, bening given the differnt samples reocessing. The toll system represent the link between the edge wich takes over the splintering forces and bads the relative movements betwen the toll and the stample. There are presented the characteristics of the toll system for the processing centers and numerical control lathes with some speciality firms achive

Micloşină Călin
STUDIUL DESMODROMIEI ŞI MODELAREA GEOMETRICĂ A UNUI ROBOT CU TOPOLOGIE PARALELĂ AVÂND STRUCTURA PF6+6xSTS+PM6
The geometric modelling represants an important stage for a robot designing. The paper presents the desmodromy study and the geometric modelling of a parallel topology robot using the Autocad 2000i program, an AUTODESK product

Mihancea Sorin ; Panc Petru
ASPECTE COMPARATIVE PRIVIND RANDAMENTUL REDUCTOARELOR CICLOIDALE CU BOLŢURI ŞI AL CELOR PRECESIONALE
The prins-toothed cicloydal and the precisional planetary reductions gears are knowns like a increasing spreads in actual technique. The paper propose an experimental study about the output of this planetary reductions gears.

Nagi Mihai; Negoiţescu Arina
CERCETĂRI EXPERIMENTALE PRIVIND VARIAŢIA CARACTERISTICII DE EXPLOATARE PENTRU UN RĂCITOR DE AER.
In the paper is determined base don the exparimental researches, the thermical coefficents an the explotation characteristic variation for an air cooler case

Petru Marinca
STUDIUL SISTEMELOR ANTIBLOCARE (A.B.S.) ALE AUTOVEHICULELOR
The anti-locking devices, fitted in the braking system of a vehicle, are ment top revent the wheels from locking at hard brking, thus improving braking and vehicle steering while braking

Petrică Iuliu; Iştvan Duşuliţa
ECHIPAMENT ŞI TEHNOLOGIE PENTRU SUDAREA PÂNZELOR DE FERĂSTRĂU DE TIP PANGLICĂ
The paper presents the equipment and technology used to weld the bandsaw blades.

Popescu Francisc; Ioana Ionel; Roland Mezer-Pittroff; Oliver Falk
CONSIDERATION ABOUT FATS USED IN BIO-DIESEL PRODUCTION FOR INTERNAL COMBUSTION ENGINES
Transesterification is the general term used to describe the important class of organic reaction where an ester is transformed into another through intercange of the alkcoxy moiety. When the original ester is reacted with an alchool, the transesterification process the transesterification is called alcoholysis. The general transesterification reaction equation is:
RCOOR’+R’’ RCOOR’’ +R’OH (1)
Thus, it is obvious that the transesterification is an equilibrium reaction and the transformation occurs essentially by mixing the reactants. However the presure of the catalyst (typically a strong acid or base) accelerates considerably the adjustement of the equlibrium. In order to achieve a high yeld of the ester, the alchool has to be used in excess. Several aspects, including the type of catalyst (alcaline or acid) , alcohol/fat moral ratio, temperature, purity of the reactants (mainly water content) and free fatty acid content have an influence on the curse of the transesterification.

Ungureanu Corneliu; Ioana Ionel; Francisc Popescu; Daniel Bisorca
CERCETĂRI PRIVIND ÎMBUNĂTĂŢIREA ARDERII PĂCURILOR INDIGENE ÎN FOCARELE CAZANELOR
Există pe plan naţional o tendinţă sporită de a ridica randamentul instalaţiilor de ardere, concomitent cu reducerea emisiilor poluante. Prezenta lucrare identifică o aplicaţie industrială a unui astfel de procedeu complex, care însă nu s-a dovedit atât de eficace precum aşteptările şi prezumţiile emise de firma producătoare a tehnologiei

Vela Ion; B.Borovac ; Ianici Sava
MODULAR DESIGN OF FORCE SENSOR FOR SOFT GRASPING WITH OPTOCOUPLERS AS SENSING ELEMENTS.
The present paper describes new modular design of force sensors capable of sesing forces between the gripper and grasped object and ensuring the object passive compliance in contact with environment. This approch enables us to build up sensor of desired complexity from simple modules. Two different designs are presented : sensor compesed of three and eight sensing cells. Detailed testing of the gripper equipped with four sensors composed of three sensing cells was performed.

Chioncel Petru
TEHNOLOGIE RK PENTRU HIDROGENERATOARELE SINCRONE.
În perioada următoare o mare parte din hidrogeneratoarele sincrone ce funcţionează în centralele hidroelectrice din ţara noastră vor împlini sau chiar depăşi 25 de ani de funcţionare, timp ce reprezintă durata de viaţă a acestor instalaţii, conform cărţilor tehnice livrate de furnizor. De aceea se impune conceperea unei tehnologii vizând reparaţia capitală R.K. a hidrogeneratoarelor sincrone cu identificarea elementelor care s-au dovedit mai puţin fiabile şi implementarea unor soluţii tehnice care să elimine aceste deficienţe şi să asigure o funcţionare optimizată pentru o lungă perioadă de timp.

Chioncel Petru
METODE DE UTILIZARE A VÂNTULUI
Die Arbeit zeigt eine prinzipielle Lösung, zur Einteilung der Windgeschwindigkeiten, um den möglichen Energieertrag aus einer Windkraftanlage, in einer bestimmten Zeitspanne festzustellen.

Gillich Gilbert-Rainer
MODEL ŞI REALITATE
Modelul ne permite studiul realităţii şi este rezultatul utilizării unor ipoteze simplificatoare. El trebuie să descrie cât mai fidel sistemul sau fenomenul studiat, dar poate neglija aspecte ale realităţii care nu prezintă importanţă în studiul fenomenului. În lucrare autorul prezintă modul de elaborare al modelelor utilizate în construcţia de maşini.

Gillich Gilbert-Rainer; Praisach Vilhelm Ion
UTILIZAREA ANALIZEI VALORII ÎN EFICIENTIZAREA ACTIVITĂŢII COOPERANŢILOR
Lucrarea prezintă modul de utilizare a metodelor şi tehnicilor de analiza valorii în eficientizarea activităţii cooperanţilor meşteşugăreşti. Sunt prezentate activităţi desfăşurate, analizate funcţiile acestor activităţi şi modul de eficientizare. În încheiere este prezentat un program de calcul, prietenos şi uşor de utilizat, care facilitează analiza.

Ghillich Nicoleta
GRAFUL SISTEMULUI DE ENERGIE ÎN FILIERA CUPTOR ELECTRIC-LAMINOR
Lucrarea prezintă din perspectiva teoriei grafurilor, sistemul consumului de energie a unei întreprinderi siderurgice, de altfel cel mai complex prin diversitatea purtătorilor de energie utilizaţi, urmărind ordonanţarea diferitelor forme de energie, pornind de la energia primară şi terminând cu cea utilă.

Gruescu Lucian; Iancu Tătucu
ASUPRA ETAPELOR DE APLICARE A METODEI ELEMENTELOR FINITE
The paper presents the domains in which the finite elements method may be applied, as well as the advantages of its use. The authores describe the stages to be completed for the correct application of the method and, for each stage, the actions to be performed are specified

Gruescu Lucian; Iancu Tătucu
CONTRIBUŢII LA STABILIREA MODELULUI NUMERIC ELEMENTAL PENTRU CÂMPUL ELECTROMAGNETIC
As the modeling method constituting the object of the paper is based on a mathematical model of the electromagnetic field, the latter is presented in the first part of the paper. One chooses the model of the electromagnetic potentials, as these are solved with the method of finite elements, much easier and more precisely than other models. One establishes the conditions that must be imposed so that the solution of the model exist and be unique, which represants personal contributions of the authors in this domain.

Gruescu Lucian; Iancu Tătucu
ASUPRA METODELOR NUMERICE DE REZOLVARE A MODELELOR MATEMATICE.
The paper aims at being a guide for those to use the finite elements method in their field of activity. One presents several mathematical matters concerning this method, rendering the paper useful to the programmers as well, in order to implement the method on the electronic computer.

Gruescu Lucian; Iancu Tătucu
UNELE ASPECTE ALE CARACTERISTICELOR ELEMENTELOR FINITE
The paper present the main characteristics of the finite element used for the numerical (digital) solving of the mathematical models with the method of the finite element. The authors point out the influence of the said characteristics upon the precision of results.

Gruescu Lucian; Iancu Tătucu
CONTRIBUŢII LA DEFINIREA ŞI UTILIZAREA ELEMENTELOR FINITE PARAMETRICE
The paper presents the relations of defining the parametrical finite elements, so that they could be implemented with any programming language.

Gruescu Lucian; Iancu Tătucu
CONSIDERAŢII ASUPRA METODEI ELEMENTELOR FINITE
The main goal of the paper is to present the mathematical fundament of the finite elements method in a form that may be accessible to as many readers as possible. In that purpose, the first part of the paper briefly exposes the principle of the approximation methods of evaluating the mathematical models, and the last part point out the particular features of the finite elements method.

Gruescu Lucian; Iancu Tătucu
CONTRIBUŢII LA STABILIREA CONDIŢIILOR DE UNIVOCITATE A SOLUŢIEI MODELULUI POTENŢIALELOR ELECTROMAGNETICE
The paper presents the conditions to be imposed so that the solution of the model of electromagnetic potentials can lead to the unique determination of the electromagnetic field in the domain (range) where the studied process takes place; some of these conditions are the authors’ personal contributions.

Liuba Gheorghe
ASUPRA DETERMINĂRII ASUPRA UNOR PARAMETRII ELECTROMAGNETICI DUPĂ AXA TRANSVERSALĂ DIN ÎNCERCĂRI STATICE LA HIDROGENERATOARE
The paper presents for testing electrical machines in transient regimes. The rotor of the machines to be tested is fixed in a particular position with respect to the stator. Usualy, the rotor is fixed in a particular position with its “d”-axis, or “q” axis, superposed on a stator phase winding, and a transient process is produced. By processing the records of this transient proces “d” axis, or “q” axis parameters result. These parameters may be further used to determine the characteristics of the asynchronous process wich can be hardly obtained by other means of especially for power machines.

Radu Gheorghe; Radu Laurenţiu
TRADUCTOARE ULTRASONICE PIEZOCOMPOZITE : UN MIJLOC DE CREŞTERE A PERFORMANŢELOR CONTROLULUI NEDISTRUCTIV
Performanţele din domeniul controlului nedistructiv cu ultrasunete şi în special determinarea mărimilor caracteristice defectelor, sunt direct legate de proiectarea şi utilizarea de traductoare adecvate din punct de vedere electric şi acustic. Cele mai recente apariţii în câmpul aplicaţiilor din domeniul controlului nedistructiv cu ultrasunete o reprezintă traductoarele din materiale piezo-compozite 1-3 ale căror proprietăţi excepţionale electrice, acustice şi termice le fac mult superioare traductoarelor ceramice sau cu polimeri piezo-ceramici realizate prin tehnologii convenţionale. Lucrarea prezintă proprietăţile piezocompozitelor de tip 1-3 şi descrie sumar tehnologia de obţinere a acestora prin injecţie în topitură.

Radu Gheorghe; Radu Laurenţiu
CÂMPUL RADIANT AL TRADUCTOARELOR ULTRASONICE CU ARIE FAZATĂ
Folosind modelul de calcul al difracţiei undelor pe frontieră se estimează câmpul acustic generat de un traductor cu arie fazată în regiunea câmpului apropiat. Sunt considerate variaţiile unghiului de dirijare a fasciculului şi punctele focale aspecte importante legate de optimizarea parametrilor de control ai traductoarelor.

Răduca Mihaela; Răduca Eugen
UNELE CONSIDERENTE ASUPRA ÎNCAPSULĂRII CIRCUITELOR INTEGRATE
In this paper will be presented the comparation of the five type packages for the electrical performances and physic-geometrical characteristics DIP with 20 pins, SOIC with 20 pins, SSOP with 20 pins, TSSOP with 20 pins, TQFP with 100 pins.

Stângu Eugen-Filip
CONSIDERAŢII CU PRIVIRE LA CAUZELE ŞI MECANISMELE PRODUCERII DEFORMAŢIILOR REMANENTE
Der Author analysiert in diesier Gründe der Erscheinung von remanenthen Verformungen. Es wird gezeigt dass die plastischen Verformungen als Grund die Dissoziationsmobilität haben und abhängig von ihr Zahl ist . In realen Werkstoffe sind die plastischen Verformungensind nicht gleich verteilt, deshalb sind sie die ursache der erscheinnung remanenther Spannungen.

Cziple Florentina
METALURGIA ÎN BANATUL MONTAN, ISTORIE ŞI CONTEMPORANEITATE
Die fogende Arbeit umfasst eine Übersicht über die Geschichte der praktischen Metallurgie in Banaterbergland, angefangen von dem neolitik bis in die heutigen Tage. Es sind folgende Verfahren vorgenstellt : das Ausgraben, Eineßen, bearbeiten der Metalle und Nichtmetalle,die technologiesche Ausstattung, ihre zeitliche Entwicklung und die vichtigsten Bergwerks- und Metallurgiezentren. Man kann auch Photos einiger Gegenstände finden die aus der Bronzepoche und Eisenepoche stammen; sie sind seit dem 18.Jh. In dem Geshcichtsmuseum Reschitza zu finden.

Cziple Florentina
PROBABILITATEA TERMODINAMICĂ DE STARE ŞI ENTROPIA
Die folgende Arbeit ubersiecht die statistische Interpretation des II Prinzips der Thermodinamik, welhe die Werbindung zvischen die Entropie und die Probabilitat des Zustandsthermodinamik macht. Als Sclussfolgerung konnten vir sagen dass ein Zunehmen oder Steigen der Entropie die Durchfurhung des Vorgangs moglich macht. Die naturliche entwicklung des System findet statt wenn die freie Energie den kleinstein Wert trragd und die Partikeln zich in einer uniformen Unordnung befinden . Das Abenhmen der Entropie ist nicht unmoglich sondern wenig moglich. Die Ireversibilitat verliert ihren absoluten Wert und das II Prinzip wird ein Gesetz der Probabilitat. Dadruch unterscheidet es zih von dem I Prinzip, welches ein absoluten Charckter besitzt.

Cziple Florentina
TURNAREA CLOPOTELOR ÎN BANAT, O TRADIŢIE VIE
Die folgende Arbeit enthällt hystorische Daten über den Ursprung und die zeitliche Entwicklung der Glocken im Banat, Möglichkeiten des Ausasbeiten der Legierungen di eman bei ihnen verwendet, technichsche Daten über den Bau der Glockenform und die Technologie des Herstellen der Glocken.

Cziple Florentina; Alexandru Cornel
VARIAŢIA FUNCŢIILOR TERMODINAMICE LA APARIŢIA DEFECTELOR STRUCTURALE
Die Arbeit stellt die Möglichkeit von Auzeigen der strukturellen Fehlern aus dem kristallsierten Netz vor, Wegen der Veräderungen einiger zustandsthermodynamischen Funktionen; dieses wären zum Beispiel: die freie Enthalpie Gibbs, die Vermischungesentropie, die Natzenergie oder freie Energie. Aufgrund dieser Informationen kann man die Oberfläche modellieren und Informationen über die reelle Struktur des Kristalls erhalten.

Frunzăverde Doina; Megheleş Octavian
CERCETĂRI PRIVIND PROPRIETĂŢILE STRATURILOR SUPERFICIALE OBŢINUTE PRIN TRATAMENT DUPLEX DE ALUMINIZARE URMATĂ DE NITRURARE APLICAT OŢELURILOR CR-MO. COMPARAŢIE CU PERFORMANŢELE OBŢINUTE PRIN NITRURAREA OŢELURILOR CR-MO-AL
Ausgehendvon der Tatsache, daβ Aluminium als typisches Legierungselement der Nitrierstähle (dank seiner Fähigkeit, hochtemperaturbeständige Nitride groβe Härte zu bilden), gleichzeitig einen beachtlichen negativen Einfluβ auf das Fertigungsverhalten dieser Stähle ausübt (durch Senken der Verformbarkeit und der Härtbarkeit), versucht die Autorin, aluminiumlegierte Nitrierstähle durch aluminierte Cr-Mo-vergütungesstähle zu ersetzen. Zur Anwendung werden zwei Vergütungsstähle benutzt, die vergleichbare Gehälten an Kohlenstoff, Chrom und Molybdän beisitzen, sich aber dadruch unterscheiden, daβ einer zusätzlich mit ungefähr 1% Aluminium legiert ist (39MoAlCr15). Das Verfahrem wird anhand der Mikrohärte der nach dem Nitrieren erhaltenen Schichten beurteilt.

Frunzăverde Doina
CERCETĂRI PRIVIND OBŢINEREA DE STRATURI ANTICOROZIVE DIN ALUMINIU PRIN METODA PVD
Die Autorin versucht den Einfluβ des Diffusionsglühens auf Aufbau düner PVD-Aluminiumschichten zu erforschen. Als Substrat werden Proben aus einem Cr-Ni-Vergűtungsstahl verwendet. Es zeigt sich, daβ der Einfluβ eher negativ ist.

Frunzăverde Doina; Megheleş Octavian
CERCETĂRI PRIVIND STRUCTURA STRATURILOR SUPERFICIALE OBŢINUTE LA OŢELURILE CROM-MOLIBDEN PRIN ALUMINIZARE URMATĂ DE NITRURARE
Ausgehend von der Tatsache, daβ Aluminium das typische Legierungselement der Nitrierstähle ist(dank seiner Fähligkeit, hochtemperaturbest ändige Nitride groβer H ärte zu bolden), aber gleichzeitig einen nicht zu verachtenden negativen Einfluβ auf das Fertigungsverhalten dieser St ähle ausűbt (durch Senken der Verform barkeit und der Härtbarkeit ), versucht die Autorin , die Möglichkeit zu erforshen. Als ersten Schritt dazu wird untersucht, welche Änderungen durch Nitrieren von aluminierten Cr-Mo-Stahlproben im Gefügeaufbau der aluminiumreichen oberen Probenschichten hervorgerufen werden. Dabei wird auch der Einfluβ der Diffusionsschicht verenschaulicht.

Frunzăverde Doina; Megheleş Octavian
CERCETĂRI EXPERIMENTALE PENTRU DETERMINAREA CONDIŢIILOR CE AU DUS LA DISTRUGEREA UNOR CĂMĂŞI DE CILINDRU DINTR-UN MOTOR DIESEL
The metalographycal analysis of cylinder jackets craching and rupture in Diesel engines leads to a scienfifical interpretation of the causes loading to this and hence, solving the incurrinc disputes between builder assembler and end user

Gligor Claudia; Gligor Gabriel
INFLUENŢA CUPLAJELOR ELASTICE ŞI A CARACTERISTICILOR ACESTORA ASUPRA FUNCŢIONĂRII SISTEMELOR MECANICE
În aceasta lucrare am prezentat influenţa cuplajelor şi a caracteristicilor asupra funcţionarii sistemelor mecanice, ecuaţiile de mişcare ale sistemelor, rezolvarea ecuaţiilor de mişcare şi momentele de solicitare a cuplajelor.

Gligor Claudia; Gligor Gabriel
CALCULUL TRADUCTOARELOR ŞI A SENZORILOR PENTRU MĂSURAREA MĂRIMILOR MECANICE
În aceasta lucrare am prezentat calculul traductoarelor şi senzorilor.

Gligor Claudia; Gligor Gabriel
CALCULUL TRADUCTOARELOR ŞI A SENZORILOR PENTRU MĂSURAREA MĂRIMILOR CINEMATICE
În aceasta lucrare am prezentat calculul traductoarelor şi senzorilor pentru măsurarea mărimilor cinematice.

Megheleş Octavian; Frunzăverde Doina;
MODIFICĂRI STRUCTURALE ALE ÎMBINĂRILOR SUDATE DIN OŢELURILE MANGANOASE ŞI OŢELURILE CARBON OBIŞNUITE
Die Autoren versuchen, die Moeglichkeit der Andwendung von rumaenischen Schweisstaeben von Tzp Cr 25 Ni 20 B anstelle von Bohler Fochs SAS 4 beim Yusammenschweissen von Manganstaehlen (HADFIELD) mit Kohlenstoffstaehlen zu erforschen. Dazu werden mechrere Schveissproben unter Anwendung von vier Testbedingungen erstellt und die der nacht anliegenden Zonen werden einer metallographischen Schweisstaebe zu keinerlei Aendeurungen im Phasenaufbau des Mikrogefueges fuehrt der Gefuegeaufbau der thermisch beeinflussten Zonen ist vergleichbar bei Anwendung der zwei Schweissstabtypen

Bichescu Andrade
ALIMENTAŢIA ŞI SPORTUL DE PERFORMANŢĂ
Le travail ici présent vent mettre en évidence l’importance que l’alimentation apporte dans le sport de performance. Justement pour ça, on vent insister sur ce facteur qui n’est suffisamment considéré de tous ceux qui sont impliqés dans l’activité sportive