2011

20-37 CALCULUL FORŢEI AERODINAMICE ŞI DISTRIBUŢIEI DE PRESIUNI PENTRU UN COŞ VERTICAL

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Daniel DAIA Dorian NEDELCU Draghiţa IANICI Florentin Mirel POP Marian-Dumitru NEDELONI Raoul Cristian AVASILOAIE la de

AERODYNAMIC FORCE AND PRESSURE DISTRIBUTION
CALCULUS FOR A VERTICAL FUNNEL
The objective of the application is to determine the aerodynamic force
and pressure distribution resulted from wind action applied on a vertical funnel with
diameter D = Ø3 m and height H = 54 m. The velocity of the air stream is 20 m/s
and air density is 1.2 kg/m3. The objective of the application is to compare the
results predicted by Solid Works Flow Simulation with experimental data.
Keywords: aerodynamic forces, pressure distribution, Flow Simulation
Cuvinte cheie: forţă aerodinamică, distribuţie presiuni, Flow Simulation

37 CALCULUL FORŢEI AERODINAMICE ŞI DISTRIBUŢIEI

20-38 COMPARAREA REZULTATELOR OBŢINUTE CU PROGRAMUL ”SVEFGF”, CONCEPUT ÎN BAZA PROCEDURILOR DE CALCUL STANDARDIZATE, CU REZULTATELE DEDUSE PRIN SIMULARE NUMERICĂ CU PROGRAMUL ”FDS” PENTRU DEPRESURIZAREA UNUI ATRIUM ÎN CAZ DE INCENDIU

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constantin ŢULEANU Efim OLARU Oleg SUSAN Pavel VÂRLAN la de

THE COMPARISON OF THE RESULTS OBTAINED WITH THE
PROGRAMME SVEFGF, CONCEIVED ON THE BASE OF
STANDARDIZED CALCULATING PROCEDURES, WITH THE
RESULTS DEDUCTED THROUGH THE NUMERICAL
SIMULATION WITH THE FDS PROGRAMME FOR A
DEPRESSURIZATION OF AN ATRIUM IN CASE OF A FIRE
This paper proposes the application of the SVEFGH programmed,
conceived on the base of standardized calculating procedures (CEN/TR 12101-
5:2007), for the depressurization of an atrium with open floors towards this from an
arson building and comparing the results with those obtained with the FDS (Fire
Dynamics Simulator) programmed in view of checking and visualizing the obtained
results, or even the adoption of optimal solutions in the case of some divergences.
Keywords: fire, atrium, ventilation, smoke, hot gases, fire safety,
neutral pressure plane
Cuvinte cheie: incendiu, atrium, ventilare, fum, gaze fierbinţi,
securitatea la incendiu, plan neutru de presiune

38 COMPARAREA REZULTATELOR OBŢINUTE CU

20-39 CONFORTUL HIGROTERMIC ŞI ECONOMIA DE ENERGIE LA CLĂDIRILE CIVILE EXISTENTE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dumitru MARUSCIAC Simona PLEŞA la de

HYGROTHERMAL COMFORT AND ECONOMY
OF CIVIL POWER IN EXISTING BUILDINGS
Efficient and low consumption of energy is an important objective for
buildings, given that their consumption is less than 40 % of total EU energy
consumption, especially for heating, lighting and equipment. Therefore,
problems that range from materials extraction, land use and construction
materials industry standards, to a good breakdown of the outer envelope of the
building and use the facilities as energy efficient, must work together to to help
achieve energy efficient buildings.
Keywords: civil, Hygrothermal comfort, energy efficiency, energy saving
Cuvinte cheie: construcţii civile, confort higrotermic, eficienţa
energetică, economia de energie

39 CONFORTUL HIGROTERMIC ŞI ECONOMIA DE

20-40 CONTRIBUŢII PRIVIND REGLAREA ADAPTIVĂ A GRUPULUI MOTOR DIESEL-GENERATOR ELECTRIC PENTRU ALIMENTAREA CLĂDIRILOR EFICIENTE ENERGETIC

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Adrian Mugur SIMIONESCU la de

ADAPTIVE CONTROL OF GROUP CONTRIBUTIONS
ON DIESEL ENGINE-ELECTRIC GENERATOR FOR ENERGY
EFFICIENT BUILDING SUPPLY
In the present paper we studied the problematic regarding the engine
rotational speed variation due to load changes, in an original way by system
architecture and management. This poses difficulties in every energetic system,
especially when this contains sources with variable output power. We chose
architecture based on a numerical and analog controller. The base element of
execution is the generator’s engine, controlled by the injection pump, according
to network electrical load. We paid a special attention to these control loops
because of the central role played by the asynchronous generator in an
uninterruptible power system. The described control system can be
independent or it can be controlled by a microcontroller which decides the
prescribed value.
Keywords: automation, energy efficiency, hybrid system, regulating
Cuvinte cheie: automatizare, eficienţa energetică, sistemul hibrid, reglementare

40 CONTRIBUŢII PRIVIND REGLAREA ADAPTIVĂ A

20-41 FOLOSIREA DEŞEURILOR INDUSTRIALE ÎN MATERIALE DE CONSTRUCŢII

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Cornel GABRIAN Simona Sorina DUMITRESCU (GABRIAN) la de

USING INDUSTRIAL WASTES IN BUILDING MATERIALS
Using industrial waste (especially those of organic nature) are a
success for both construction and environment. In previous experiments
rubber waste does not undergo thermal or chemical transformations, only a
simple shredding process. Thus, the shredded rubber is inserted in the
concrete mixture, partly replacing the aggregate. By means of this recycling
process, a major objective for sustainable development is confirmed –
improving environmental quality.
Keywords: waste, rubber, concrete, aggregates, crushing,
environment, compressive strength
Cuvinte cheie: deşeuri, cauciuc, beton, agregate, mărunţire, mediu,
rezistenţa de compresiune

41 FOLOSIREA DEŞEURILOR INDUSTRIALE

20-42 ELEMENTE ŞI STRUCTURI DE REZISTENŢĂ EFIECIENTE DIN LEMN LAMELAT ÎNCLEIAT

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dorin MAIER Dumitru MARUSCIAC la de

EFFECTIVE ELEMENTS AND RESISTANCE
STRUCTURE OF GLUED LAMINATED TIMBER
Given the advantages afforded by modern wood constructions the
paper presents the main types of elements and structures for effective
resistance laminated wood, namely wood and plywood construction, with
features on how the composition and design considerations on the behavior
and calculation of specific strength and stiffness.
Keywords: laminated wood structural elements
Cuvinte cheie: elemente structurale din lemn încleiat

42 ELEMENTE ŞI STRUCTURI DE REZISTENŢĂ

20-43 UN NOU TIP DE CONSTRUCŢIE AGRICOLĂ CU DUBLĂ FUNCŢIUNE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ancuţa Nadia JURCO Dumitru MARUSCIAC la de

A NEW TYPE OF AGRICULTURAL BUILDING
WITH DUAL FUNCTION
The current paper refers to agricultural buildings with a dual function,
on the ground floor an animal shelter, while on the first floor a a passive
greenhouse destined for seedlings, vegetables and flowers.
From a constructional point of view, the ground floor is constructed with
masonry load bearing walls and a frame made up of concrete prefabricated
elements (columns, beams and slab elements), while the first floor is based on
a modern variant, constructed with prefabricated columns and a spatial roof
structure made up of standard bars.
Keywords: dual-function design, roof space, standard elements
Cuvinte cheie: construcţie cu dubla funcţiune, acoperiş spaţial,
elemente tipizate

43 UN NOU TIP DE CONSTRUCŢIE AGRICOLĂ

20-44 TEHNOLOGIE DE EVALUARE EXPERIMENTALĂ A REZISTENŢEI MECANICE LA SARCINI DE COMPRESIUNE A FASCICULULUI COMBUSTIBIL EXPERIMENTAL TIP CANDU

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ilie PRISECARU Tiberiu GYONGYOŞI Valeriu Nicolae PANAITESCU la de

TECHNOLOGY FOR EXPERIMENTAL EVALUATION
OF THE MECHANICAL COMPRESSION RESISTANCE
AT CANDU TYPE FUEL BUNDLE
The paper is referring to the test technology evolution of CANDU
experimental fuel bundle at the Institute for Nuclear Research Piteşti. The outof-
reactor test rig and the special devices for evaluation of the nuclear fuel
mechanical resistance performance at compression loads, using light water at
representative parameters (pressure, temperature and flow rate) for CANDU 6
reactor operating conditions, are described.
This paper describes the original improvements implemented and
practically applied to mechanical resistance of carrier fuel bundle validation
technology. Some results and conclusions are presented at the end.
Keywords: strength, loop testing, simulation stops, fuel transporter beam
Cuvinte cheie: rezistenţă mecanică, bucla de testare, simulator
opritori, fascicul combustibil transportor

44 TEHNOLOGIE DE EVALUARE EXPERIMENTALĂ

20-45 SISTEM CAM PENTRU MODELAREA, DESIGNUL ŞI SIMULAREA PROCESELOR DE EXTRUDARE A PIESELOR MICI

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ovidiu OPREA Simona DUMITRESCU Sorin-Dumitru GROZAV la de

CAM SYSTEM FOR MODELLING, DESIGN AND SIMULATE
THE PROCESS OF EXTRUSION FOR SMALL PIECES
This paper is intended to present a Computer Aided Design by using
Solid works 2007, system used in modeling the process extrusion in one step,
for the components of machines for mining workers. Here are also included the
presentation of procedures, modules and principles used in build set system.
The possibilities of this system include technological design, the geometrical
processing design, the conversion system, numerical processing system and
much more. This system can also provide the tool design. For these tools the
authors have prepared a procedure for parametric design of the geometrical
and technological parts of this type of process. The authors have obtained an
automatic interactive designing system, starting from practical requirements, to
realize high precision products using the old parts on unused machines. Using
the database created it is possible to realize a template of the parts for a
generalized extrusion die, thus obtaining an autocorrecting design procedure.
Keywords: extrusion, technical design, computer aided design
Cuvinte cheie: extrudare, design tehnic, proiectarea asistată de
calculator

45 SISTEM CAM PENTRU MODELAREA, DESIGNUL ŞI

20-46 TEHNOLOGII DE TĂIERE A MATERIALELOR TEXTILE CU RAZE LASER

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Angela MAIOR la de

CUTTING OF TEXTILE TECHNOLOGY WITH LASERBEAM
This paper deals with a method of cutting textiles using nonconventional
technologies, characterized by a high degree of automation.
Compared with other cutting techniques, laser cutting offers certain
advantages: the laser does not wear out, the cut is highly precise, the cutting
width is minimal and the range of textiles that can be cut is unlimited.
Keywords: unconventional technologies, cutting tool, laser
Cuvinte cheie: tehnologii neconvenţionale, unealta tăietoare, laser

46 TEHNOLOGII DE TĂIERE A MATERIALELOR

20-47 MODELAREA PLĂCILOR PRIN ÎMPROŞCARE CONTROLATĂ CU PARTICULE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Francisc GNANDT Radu VASIU Tiberiu CĂTUNEANU la de

MODELING PLATES WITH SHOT PEENING
This paper presents the new method for modeling the plates, by using
the shot peening. Shot peen modeling is a partially effective forming process
derived from the shot peening surface treatment. During impact of the shot, a
certain amount of its kinetic energy is transformed into plastification of the
component. When shot velocity is fairly low only a thin layer of the component’s
material is elongated resulting in a convex curvature. If shot velocity is
increased, concave curvatures are produced.
Keywords: modeling, plates, shot controlled
Cuvinte cheie: modelare, plăci, împroşcare controlată

47 MODELAREA PLĂCILOR PRIN ÎMPROŞCARE

20-48 CONSIDERAŢII PRIVIND POSIBILITATEA REALIZĂRII PIESELOR CU CRUSTĂ DURĂ REZISTENTE LA UZURĂ ŞI COROZIUNE UTILIZÂND DEŞEURI INDUSTRIALE (MATERIALE RECICLABILE)

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Francisc GNANDT Liviu DĂIANU Radu VASIU la de

CONSIDERATIONS ON THE POSSIBILITY OF MAKING
PARTS HARD CRUST WEAR AND CORROSION RESISTANT
USING INDUSTRIAL WASTE (RECYCLED MATERIALS)
Manufacturing parts to take anti-wear and corrosion crust, using
industrial waste, applicable in the chemical industry and light is a new field of
research and development in Romanian industry. Achieving that hard crust
components used in aggressive environments, represents a new area explored
enough, and is a ,,stone attempt’’ to research engineers.
Keywords: industrial waste, ceramic materials, thermal spray
deposition
Cuvinte cheie: deşeuri industriale, materiale vitroceramice, depunere
prin pulverizare termică

48 CONSIDERAŢII PRIVIND POSIBILITATEA REALIZĂRII

20-49 ALIAJE UŞOR FUZIBILE UTILIZATE LA REALIZAREA MODELELOR DE FORMARE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dăian LUNGU Francisc GNANDT Radu VASIU la de

FUSIBLE ALLOY USED TO MAKE CASTING PATTERNS
The main scope of the project lies in supporting the knowledge
development in the field of small series of unique parts, mainly for the
automotive industry, by producing a technology and a device for patterns
through self formation from an easily fusible alloy with basalt fibers that enable
both a rapid pass from one type of parts to another, so that the fabrication flow
can be easily changed, as well as innovative research for the achievement of a
composite material based on Bi-Sn alloy with basalt fibers with higher technical
characteristics.
Keywords: self-study, easy fusible models, composite materials
Cuvinte cheie: autoformare, modele uşor fuzibile, materiale compozite

49 ALIAJE UŞOR FUZIBILE UTILIZATE LA

20-50 APLICABILITATEA LEGII VEGARD ÎN DETERMINAREA PARAMETRULUI CRISTALOGRAFIC LA PULBERILE ALIATE MECANIC

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dan Anastasiu POP George ARGHIR Ioan PETEAN la de

VEGARD LAW APLICABILITY IN CRYSTAL PARAMETER
DETERMINATION FOR MECHANICALLY ALLOYED
POWDERS
The performed investigations prove that applying the Vegard Law for
Cr-Fe binary alloys result values of crystal parameter in good concordance with
experimental results. This makes Vegard Law a useful theoretical tool for
estimation of crystal properties of further alloys. The viability of this law could
not be proved for ternary systems. We mention that Al and Co were introduced
as ternary component after 16 hours of previous milling of Fe-Cr powder
composition. The adding of ternary element such Al or Co at the beginning of
milling experiment is an open path for further investigation of the applicability of
Vegard Law to the ternary systems.
Keywords: Fe-Cr alloys, lattice parameter, solid solutions
Cuvinte cheie: aliaje Fe-Cr, parametru reţelei cristaline, soluţii solide

50 APLICABILITATEA LEGII VEGARD ÎN

20-51 APLICAŢIE A RECUNOAŞTERII FORMELOR ÎN SISTEME DE FABRICAŢIE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Mihaela Elisabeta CIORTEA la de

APPLICATION FORMS OF RECOGNITION SYSTEMS
IN MANUFACTURING
The content of the paper deals with large white plates shape
recognition. In preparing the work we started from the premise that practice
shows that during the technological process may occur a number of flaws that
undermine this production. One of these defects relate to the geometry of the
object to be processed.
Keywords: recognition system, the manufacture, transport flow
Cuvinte cheie: sistem de recunoaştere, proces de fabricaţie, flux de transport

51 APLICAŢIE A RECUNOAŞTERII FORMELOR

20-52 CERCETĂRI PRIVIND ASIGURAREA SOLIDIFICĂRII DIRIJATE A ROŢILOR TURNATE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Adriana PUŢAN Ana JOSAN la de

RESEARCH ON ENSURING DIRECTIONAL
SOLIDIFICATION OF CAST WHEELS
The paper presents possibilities of reduction in casting defects
recorded (especially voids) by ensure directional solidification. It is considered a
particular case wheel casting in a steel foundry casting.
Keywords: casting, feeder, how the solidification, mold
Cuvinte cheie: piesă turnată, maselotă, modul de solidificare, formă de
turnare

52 CERCETĂRI PRIVIND ASIGURAREA SOLIDIFICĂRII

20-53 COMPOZITE Al – BAZALT REALIZATE PRIN SINTERIZARE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dăian LUNGU la de

COMPOSITES Al – BASALT MADE BY SINTERING
The aim of this paper is the description of certain issues related to the
obtaining of new materials with special characteristics over those already
normal and also the interest to obtain economically profitable materials has
become more ample.
The technology used to obtain the Al- Basalt composite through casting
and also sintering consists in obtaining the compatibility of basalt in the
aluminum based metallic matrix and obtaining the agglutination between
aluminum powders and basalt particle in the most efficient conditions.
Keywords: casting, sintering, aluminum, basalt
Cuvinte cheie: turnare, sinterizare, aluminiu, bazalt

53 COMPOZITE Al – BAZALT

20-54 CONSIDERAŢII ASUPRA OBŢINERII MATERIALELOR NANOSTRUCTURATE METALICE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dăian LUNGU la de

CONSIDERATION TO OBTAINING OF METALIC
NANOSTRUCTURED MATERIALS
This paper presents the procedures for obtaining metallic nanostructures.
These materials are increasingly present because they special possess
properties and have an greater increasingly use in the areas of mechatronics,
robotics, precision mechanics.
Keywords: materials, nanocrystalline, processes, obtaining
Cuvinte cheie: materiale, nanocristaline, procedee, obţinere

54 CONSIDERAŢII ASUPRA OBŢINERII MATERIALELOR

20-55 TRANSFORMĂRI STRUCTURALE ALE OŢELULUI LEDEBURITIC X200Cr12 ÎN URMA APLICĂRII UNUI TRATAMENT TERMIC ŞI CRIOGENIC

Această intrare a fost publicată în 2011 Volumul 20 și etichetată George ARGHIR Ioan PETEAN Marius BĂRĂIAN Nicolaie JUMATE la de

STRUCTURAL TRANS FORMATIONS
OF THE X200Cr12 LEDEBURITIC STEEL AFTER A
CRYOGENIC HEAT TREATMENT
Cryogenic treatment completes the classic heat treatment of steels
with higher carbon content of 0.6 %, bringing substantially improving on
properties, being very simple.
In the case of X200Cr12 ledeburitic steel, the amount of residual
austenite was reduced from 20.03 % to 14.14 %, being transformed into
martensite, as a result of cryogenic treatment done immediately after
quenching.
Hardness Vickers values were increased with 61 units, representing a
6.7 % increase, as a result of martensitic transformation.
Keywords: steel ledeburitic X200Cr12, X-ray diffraction, martensitic
transformation, optical microscopy, low temperature
Cuvinte cheie: oţel ledeburitic X200Cr12, difracţie cu raze X,
transformare martensitică, microscopie optică, temperaturi scăzute

55 TRANSFORMĂRI STRUCTURALE ALE OŢELULUI

20-56 ASPECTE MORFOLOGICE ŞI STRUCTURALE ALE AMESTECULUI PULVERULENT Fe50Ni50 SUPUS ALIERII MECANICE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată George ARGHIR Ioan PETEAN Ioan TĂUT la de

MORPHOLOGICAL AND STRUCTURAL ASPECTS
OF Fe50Ni50 POWDER MIXTURE SUBJECTED TO
MECHANICAL ALLOYING
The mechanical alloying experiment was performed inti a planetary
ball mill using elemental Fe and Ni powders mixed together at 50 wt. % ratio.
Powder samples were taken out after 1, 2, 4, 8, 16, 32, 48, and 64 hours of
milling. These samples were subjected to X-ray diffraction, sieving analysis,
and optical microscopy inspection. The results allow us to conclude that Ni
presents a ductile behaviour meanwhile Fe acts as a brittle component which
conducts to the forming of mixed particles of Ni embedding smaller Fe one. The
particle structure is more refined progressive with the milling time. Finally, the
solid solution of Fe in Ni FCC is completely formed at 64 hours of milling.
Keywords: Fe-Ni, alloy mechanical, planetary mill
Cuvinte cheie: Fe-Ni, aliere mecanică, moară planetară

56 ASPECTE MORFOLOGICE ŞI STRUCTURALE

20-57 OBŢINEREA PULBERILOR Cu – Zn – Al PRIN PULVERIZARE DIN FAZĂ LICHIDĂ UTILIZATE PENTRU REALIZAREA MATERIALELOR CU MEMORIA FORMEI,

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Cristina GEAPANA Paula CHILAT Radu VASIU Tiberiu CĂTUNEANU la de

TECHNOLOGY OF OBTAINING ALLOYS
Cu – Zn – Al THROUGH BY SPRAYING OF LIQUID PHASE FOR
MAKING MATERIALS WITH SHAPE MEMORY
Alloys Cu – Zn – Al with shape memory are part of special class of
suitable material, as they can transform heat directly into mechanical work. The
known shape memory alloys, used alloys with the Cu presents some
advantages such as lower cost price, compared with other alloy for example,
high values of shape memory characteristics and capacity of this effect memory
to form after a relatively short period of education. Shape memory alloys are
characterized by a mechanical memory, memory that is due to thermoelastic
behavior.
Keywords: shape memory alloys, alloys Cu – Zn Al
Cuvinte cheie: aliaje cu memorie a formei, aliaje Cu – Zn – Al

57 OBŢINEREA PULBERILOR Cu – Zn – Al PRIN

20-58 STUDIUL REZISTENŢEI LA CAVITAŢIE A OŢELULUI INOXIDABIL MARTENSITIC CU 12 % CROM DESTINAT FABRICĂRII PALETELOR DE MAŞINI HIDRAULICE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dumitru ALEXESCU Ilare BORDEAŞU Ionel BACIU Octavian OANCĂ la de

STUDY OF RESISTANCE TO CAVITATION TO MARTENSITIC
STAINLESS STEEL WITH 12 % CHROM USED IN
MANUFACTURING HYDRAULIC MACHINERY BLADES
Paper analyses the cavitations erosion for stainless steel with 12 %
chromium and 6 % nickel content. The experimental researches were
undertaken in the Cavitations Laboratory of the Timişoara Polytechnic
University using a vibratory facility respecting the conditions of the ASTM G32-
2006 Standard.
The steel behaviour was evaluated both on the ground of
microstructure erosion (through optic and electronic microscopy) and by
comparisons with other reference steel, with 18 % chrome and 10 % nickel,
which was use in Romania and other countries for manufacturing turbine
blades.
Keywords: cavitation erosion, microstructure, maximum depth of
erosion, stainless steel, chemicals
Cuvinte cheie: eroziunea cavitaţiei, microstructură, adâncimea
maximă a eroziunii, oțel inoxidabil, elemente chimice

58 STUDIUL REZISTENŢEI LA CAVITAŢIE A OŢELULUI

20-59 CERCETĂRI EXPERIMENTALE PRIVIND OBŢINEREA BUCŞELOR LAGĂRELOR DE ALUNECARE DIN COMPOZITE CU PROPRIETĂŢI DIRIJATE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Dăian LUNGU la de

EXPERIMENTAL RESEARCH CONCERNING ON OBTAINING
SLIDING BUSHINGS BEARINGS FROM COMPOSITES
WITH CONTROLLED PROPERTIES
The paper herewith presents results gotten in research on getting of new
composite materials as well as procedure of achieving such. Orientation of steel
powders into the ceramic mass is done in magnetic field during process flows of
pressing concomitantly with a supplementary operation, vibration. Stiffening of
compacts takes place during sintering. The fiber model gotten in composite is like the
one achieved by metallic fibers.
Keywords: composite properties, driven, powder
Cuvinte cheie: compozite, proprietăţi, dirijate, pulberi

59 CERCETĂRI EXPERIMENTALE PRIVIND OBŢINEREA

20-62 SOLUŢII MODERNE PENTRU OPTIMIZAREA PROCESELOR DE ELABORARE ÎN CAE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Corina Maria DINIŞ Gyöngyi BITTERMANN Maria NĂSĂUDEAN la de

MODERN SOLUTIONS FOR OPTIMIZATION
THE PROCESS OF DEVELOPMENT IN CAE
The paper shows how to reduce production costs by automating
processes in the metallurgical industry. Automatic electrode position adjustment
makes a substantial contribution to increasing efficiency and reducing cost
prices CAE batch.
Keywords: electric arc furnaces, automatic adjustment of electrode
position, the computer process
Cuvinte cheie: cuptoare cu arc electric, sistem automat de reglare a
poziţiei electrozilor, calculatorul de proces

62 SOLUŢII MODERNE PENTRU OPTIMIZAREA

20-63 STUDII PRIVIND OPTIMIZAREA ROLELOR DE TRAGERE LA TURNAREA CONTINUĂ VERTICALĂ A OŢELULUI

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constantin MARTA Daniel AMARIEI Ion VELA Marius TUFOI la de

STUDIES REGARDING THE OPTIMIZATION OF
WITDRAWING ROLLERS AT VERTICAL CONTINUOUS
CASTING OF STEEL
This paper presents an optimization method for withdrawal rollers to the
withdrawal plant at vertical continuous casting of steel. Optimizing rollers was
achieved by: use of statistical calculations applied to quantities, experimental
measurements obtained directly from the withdrawal of blanks, using
techniques CAD (Computer Aided Design) and CAE (Computer Aided
Engineering) design, modeling and optimization of cylinders; using finite
element method, FEM for static and dynamic simulations, the behavior of
withdrawal-straightening rolls in continuous casting process for determining
stress, elongation and movements that occur in this process. The study is both
experimental and theoretical, and aims to improve the process of withdrawal of
the semi continuous casting with vertical curvilinear wire of steel, using modern
methods of analysis, design and optimization of mechanical drives.
Keywords: vertical continuous casting, semi-roller drawing optimization,
CAD, CAE
Cuvinte cheie: turnare continuă verticală, semifabricate, role de tragere,
optimizare, CAD, CAE

63 STUDII PRIVIND OPTIMIZAREA ROLELOR DE

20-64 METODE DE OPTIMIZARE A INSTALAŢIILOR DE TRAGERE LA TURNAREA CONTINUĂ ORIZONTALĂ A METALELOR

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constantin MARTA Daniel AMARIEI Ion VELA Marius TUFOI la de

METHODS OF OPTIMIZATION OF FACILITIES
FOR WITHDRAWAL FROM HORIZONTAL
CONTINUOUS CASTING OF METALS
This paper presents variants of modernization process of withdrawing
the profiles in horizontal continuous casting (HCC) of metals. Horizontal
continuous casting is a modern method of directly obtaining different types of
metallic semi-products by casting without using the laminated lines. As a
method, continuous casting is made by introducing liquid metal with a welldefined
temperature in a tank with water cooled walls, at interior, called
crystallizer and evacuation „wire” of solidified metal. Method of continuous
casting of ferrous and nonferrous metals and steel was imposed because it has
advantages over conventional casting into ingots. These advantages are: the
removal of metal is improved, it is obtaining a semi-finished product with a
superior quality surface, a lower segregation removes, consumption of ingot
molds and cast steel bridges are removed.
Keywords: horizontal continuous casting, semi-optimization methods,
modernization
Cuvinte cheie: turnare continuă orizontală, semifabricate, metode de
optimizare, modernizare

64 METODE DE OPTIMIZARE A INSTALAŢIILOR

20-65 INSTALAȚIE DE FABRICAT ARCURI ELICOIDALE PENTRU VEHICULE FEROVIARE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ioan VIDICAN Marius PÂSLĂ la de

INSTALLATION FOR RAIL VEHICLES
MANUFACTURED HELICAL SPRINGS
The paper presents the operating principle for a plant to manufacture
spring steel coil springs and also some medium thickness calculations for the
main parts of the plant design
Keywords: spring, plant, rolling stock, elastic element
Cuvinte cheie: arc, instalaţie, material rulant, element elastic

65 INSTALAȚIE DE FABRICAT ARCURI ELICOIDALE

20-66 SISTEME MECANICE DE ADĂPARE UTILIZATE ÎN ZOOTEHNIE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ioan Aurel CHERECHEŞ la de

MECHANICAL SYSTEMS USED IN ANIMAL DRINKING
Any species of animals in animal breeding farms needs one ore more
types of drinking troughs (depending on the operating system) that would be
specific to its biometric characters, microclimate, and must provide physical and
social comfort. Drinker types used determines the surface that animals should
have around them. The importance of knowing the animal needs stems from
the fact that accurate information on drinking troughs can be designed to be
more efficient, more economical, more reliable or that may be more ergonomic
for the animals and thereby increase the production by a few percent, which in
the current economic conditions can mean a lot.
Keywords: drinking troughs, cattle
Cuvinte cheie: adăpători, bovine

66 SISTEME MECANICE DE ADĂPARE

20-67 ZINCAREA TERMICĂ – O TEHNOLOGIE MODERNĂ

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Daniel Gheorghe LAKATOS la de

DIP GALVANIZING – A MODERN TECHNOLOGY
Steel is a key component in many fields and industrial branches. Due
to the hardness, elasticity and toughness of it came to be used in increasing
proportions.
But it has a big disadvantage: a low resistance to corrosion in both
exterior and interior environments. For this reason it is essential to prevent
corrosion and has become a major problem these days.
A method of anti corrosive protection is hot dip galvanizing. This
solution is used in increasing proportions due to long-term savings and low
maintenance cost offered by it.
Keywords: zinc, galvanizing, steel, iron
Cuvinte cheie: zincare, zincare termică, oţel, fontă

67 ZINCAREA TERMICĂ – O TEHNOLOGIE MODERNĂ

20-68 INFLUENŢA IMPURITĂŢILOR METALICE ÎN PRACTICA ZINCĂRII ACIDE CU CLORURI

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Florentina CZIPLE Lenuţa SUCIU la de

THE INFLUENCE OF METAL IMPURITIES
IN CHLORIDE ACID ZINC COATING
The paper present the some defects caused by impurities, acid zinc
coating occurred in practice, defects can be fixed depending on the nature of
the case, reversible reactions, or the time of referral. Conclusions drawn from
the study of the influence of metal impurities. Like all plating baths, acidic
galvanizing bath is very sensitive to metal pollution and aggressive foreign
electrolyte greatly increases the risk of such pollution. Particular attention
should be given to measures to avoid the intake of foreign metal galvanizing
bath and their immediate disposal, where their presence is found.
Keywords: zinc, anode, additives, pollution
Cuvinte cheie: zincare, anod, aditivi, poluare

68 INFLUENŢA IMPURITĂŢILOR METALICE

20-69 SOLUŢII MODERNE PENTRU VIBROIZOLAREA CIOCANELOR DE FORJARE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Cristian Vasile ANTON Virgil MOLDOVAN la de

MODERN SOLUTIONS FOR HAMMERS FORGING
VIBROIZOLATION
The work present general problematic of the forging hammers impact
with environment and some solutions that may reduce theirs negative
consequences.
Keywords: hammer, vibroizolare, box spring, damping
Cuvinte cheie: ciocan, vibroizolare, cutii cu arc, amortizare

69 SOLUŢII MODERNE PENTRU VIBROIZOLAREA

20-70 MĂSURĂTORI ALE VIBRAŢIILOR PRODUSE DE UN CIOCAN DE FORJĂ Simona Camelia ŞARAMET, Mariana ARGHIR

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Mariana ARGHIR Simona Camelia ŞARAMET la de

MEASUREMENTS OF VIBRATIONS PRODUCED
BY A FORGE HAMMER
In this study is presented some measurements and computer data
acquisition system. It is presented the steps of experiments and measurements
on the human subject in the technological flow during forging hammer.
The results of measurements were presented processing, graphics
and conclusions.
Keywords: vibration, forging hammers, measurements
Cuvinte cheie: vibraţii, ciocane de forjat, măsurători

70 MĂSURĂTORI ALE VIBRAŢIILOR PRODUSE

20-71 STAND PENTRU DETERMINAREA EXPERIMENTALĂ A COMPORTARII DINAMICE ÎN DOMENIUL TIMP A MOTOARELOR HIDRAULICE ROTATIVE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constanţa CRISTESCU Corneliu CRISTESCU Dragoş ION-GUŢĂ Ioana ILIE Magdalena NEACŞU Petrică KREVEY la de

STAND FOR EXPERIMENTAL DETERMINING OF THE
DYNAMIC BEHAVIOR OF THE ROTATOR HYDRAULIC
ACUATORS IN TIME FIELD
The paper presents a testing stand for experimental determining of the
dynamic behavior of the rotator hydraulic actuators, in time field, as execution
elements which are finding in the composition of the hydro mechanic
equipments. There are presented the conceptual schema of the stand, the
components of the stand and, finally, there are presented some experimental
results, which contain the graphical variation of the main dynamic parameters.
Keywords: test bench, experimental research, rotary engines, dynamic
behavior, sensors and transducers, data acquisition
Cuvinte cheie: stand de testare, cercetare experimentală, motoare
hidraulice rotative, comportare dinamică, senzori şi traductoare, achiziţie date

71 STAND PENTRU DETERMINAREA EXPERIMENTALĂ A

20-72 STAND PENTRU DETERMINAREA EXPERIMENTALĂ A COMPORTĂRII DINAMICE ÎN DOMENIUL TIMP A MOTOARELOR HIDRAULICE LINIARE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constanţa CRISTESCU Corneliu CRISTESCU Dragoş ION-GUŢĂ Genoveva VRÂNCEANU Petrică KREVEY la de

STAND FOR EXPERIMENTAL DETERMINING OF THE
DYNAMIC BEHAVIOUR OF THE LINEAR HYDRAULIC
ACUATORS IN TIME FIELD
The paper presents a testing stand for experimental determining of the
dynamic behavior of the linear hydraulic actuators, in time field, as execution
elements which are finding in the composition of the hydro mechanic
equipments. There are presented the conceptual schema of the stand, the
components of the stand and, finally, there are presented some experimental
results, which contain the graphical variation of the main dynamic parameters.
Keywords: test bench, experimental research, hydraulic motors, linear,
dynamic behavior, sensors and transducers, data acquisition
Cuvinte cheie: stand de testare, cercetare experimentală, motoare
hidraulice liniare, comportare dinamică, senzori şi traductoare, achiziţie date

72 STAND PENTRU DETERMINAREA EXPERIMENTALĂ A

20-73 ANALIZA CU AJUTORUL UNUI SUPRACATALIZATOR VOSGES, A INFLUENŢEI CÂMPULUI MAGNETIC ASUPRA ARDERII ÎNTR-O CENTRALĂ TERMICĂ

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Florin NICOARĂ Ioan TEBEREAN Nicolae ROTARU la de

ANALYSIS USING A VOSGES CATALYST SUPRA,
INFLUENCED OF THE MAGNETIC FIELD
ON BURNING IN A CENTRAL HEATING
The paper presents analysis of the magnetic field influences with
Vosges super catalyst on the parameters of the process of burning in a boiler.
Following the attempts made to result in a significant drop in gas consumption
and reduced emissions. We have also measured the time needed to heat two
liters of water, noticing a reduction of it.
Keywords: magnetic field, supercatalizator, gas, burning, boiler
Cuvinte cheie: câmp magnetic, supercatalizator, gaz, ardere, centrală termică

73 ANALIZA CU AJUTORUL UNUI SUPRACATALIZATOR

20-74 BIOETANOL

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Diana IORGA la de

BIOETHANOL
There is no across the board homogeneity in the ethanol market. Not
only is there a two-tiered trade in ethanol in terms of sustainability, but fuel
alcohol specifications also vary across the Community. In some member states,
denatured product can be used for the manufacture of fuel ethanol, while in
others, it has to be indentured.
Keywords: ethanol, bioethanol, produced denatured, fuel, cars
Cuvinte cheie: etanol, bioetanol, produs denaturat, carburant,
automobil

74 BIOETANOL

20-75 DETERMINAREA CARACTERISTICILOR FIZICOCHIMICE ALE BIOCOMBUSTIBILILOR PE BAZĂ DE ULEI ALIMENTAR UZAT, ÎN AMESTEC CU MOTORINA

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Adrian TODORUŢ István BARABÁS la de

THE DETERMINATION OF THE PHYSICO-CHEMICAL
BIOFUEL WHITH FUEL BASED OF USED COOKING OIL IN
COMBINED WITH DIESEL
Mentioning that low caloric power of biofuel based of used cooking oil
(36867 kJ/kg) is inferior to diesel (41800 kJ/kg) it was trying partial replace of
diesel with monoester from used cooking oil regarding the mainteining of the
engine power concomitent with the drop of the polluants from exaust gases.
Folowing this, after the fabrication and setting up of the optim recepy of biofuel
from used cooking oil, it was done the mix of biofuel and diesel, in different
proportion, wich are label related to basic material, beeing experimental
determinated the densieties and cinemati viscocieties of new fuels, compared
with diesel, at temperatures between 580 0C. It was detected a growing of
density and viscosity of fuel based of used cooking oil compared with diesel
around 3,148 % and 26,44 % on the whole scale of trying temperatures.
Keywords: compression-ignition engines, biodiesel, density, viscosity
Cuvinte cheie: motor cu aprindere prin comprimare, biodiesel,
densitate, viscozitate

75 DETERMINAREA CARACTERISTICILOR FIZICOCHIMICE

20-76 EVALUAREA DISTANŢEI DE SIGURANŢĂ DINTRE AUTOVEHICULE LA DESPRINDEREA DIN COLOANĂ, ÎN VEDEREA DEPĂŞIRII

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Adrian TODORUŢ István BARABÁS la de

EVALUATING THE SAFETY DISTANCE BETWEEN
VEHICLES WHEN INITIATING THE OVERTAKE
Depending of frequent variants meet in the overtake driving practice, it
is emphasized the influence of the driver’s time reaction and of the vehicles
speed on minimum safety distance when initiating the overtake.
Keywords: driver reaction time, distance, safety, performance
exceeded
Cuvinte cheie: conducător auto, timp de reacţie, distanţă de siguranţă,
efectuarea depăşirii

76 EVALUAREA DISTANŢEI DE SIGURANŢĂ DINTRE

20-77 STUDIU DE CAZ ASUPRA SISTEMELOR DE RECUPERARE A ENERGIEI LA FRÂNARE, UTILIZATE ÎN CAZUL AUTOVEHICULELOR HIBRIDE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Mihai JĂDĂNEANŢ Remus Mihail PETRIKO la de

CASE STUDY ON SYSTEMS BRAKING ENERGY
RECOVERY USED IN HYBRID VEHICLES
In this work are presented the main characteristics of regenerative
brake systems used on hybrid and electric cars. The main points in these
systems are studied functional characteristics in the specific case of a midsize
car with the parallel-hybrid system.
Keywords: hybrid system, electric car
Cuvinte cheie: sistem hibrid, automobil electric

77 STUDIU DE CAZ ASUPRA SISTEMELOR DE

20-78 SISTEME DE PROPULSIE HIBRIDE SOLUŢIE DE UTILIZARE EFICIENTĂ A ENERGIEI DISPONIBILE PE AUTOVEHICULELE RUTIERE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Corneliu JOLDOŞ Ovidiu-Viorel ŞMADICI la de

HYBRID PROPULSION SYSTEMS AN EFFICENT
SOLUTION FOR ON –BOARD AUTO VEHICLE ENERGY
The paper summarizes the main solution for improving the motor
vehicle fuel economy. The analyzed solutions are: transmission efficiency
improvement, idle shut off, driving resistance improvement, load point
deflection, regenerative braking, and exhaust gases energy recovery.
The potential of each solution is then use to demonstrate the
advantages of hybrid propulsion systems. It is shown that, for a mild-hybrid
passenger car, it is possible to achieve a 16 to 28 % cumulate fuel economy
improvement.
Keywords: engine, energy, automotive, car, efficiency, fuel
Cuvinte cheie: motor, energie, autovehicule, automobile, randament,
combustibil

78 SISTEME DE PROPULSIE HIBRIDE

20-79 AUTOMOBILE ELECTRICE – Partea I

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ioana BĂLAN Mircea BEJAN la de

ELECTRIC CARS – Part I
In recent years, in all countries, urban transport pose specific
problems and produce significant damage to political, social and environmental
(pollution, noise, and stress). The best solution to problems of environmental
pollution is electric vehicle (EV) as an alternative means of transport.
Electric car is a vehicle that uses an electric motor as a drive with
electric power from a source, usually battery. The major advantages of electric
car are fuel economy, pollution near zero outside production, efficiency/high
yield, instant acceleration, very low noise, easy maintenance by eliminating
much of the classic motor car. High price and low autonomy are barriers to the
success of such vehicles. Over nearly two decades, 86 % of cars in circulation
will be powered by conventional motors. However, they have several
disadvantages. Major disadvantages are high cost, relatively high load time,
lifetime low of about 3-5 years, reduced autonomy max. 300 km. Batteries are
reducing capacity by 50 % or more at temperatures below 10 0C and above 40
0C and tend to overheat and even explode under certain conditions. In 1996,
the first serial production electric car, EV1 (Electric Vehicle 1), were
manufactured in the U.S. by General Motors, and circulated on California
roads. Although General Motors has built and launched on the market between
the years 1996-1999 the first electric car, EV1 was withdrawn and recycled to
pressure oil companies and the argument of lack of market demand.
Lithium batteries have been proposed for the first time in 70 years, but
their sale started only after 20 years. Lithium is a metallic substance such as
highly volatile and corrosive, which reacts violently with many other substances.
Corrosive properties of lithium are strongly enhanced with increasing
temperature, leading to accelerated oxidation coatings and the membranes that
separate the battery components, leading eventually to irreversible damage.
Much lighter than regular batteries, rechargeable, usually made of nickel
components with better performance and longer life Li-ion cells were deejay Li-
553
ion cells have been used for proper laptops and mobile phones. Using lithium
batteries to power electric vehicles involves ensuring some form of Li ion
batteries, many experts feel that the technology is ready for the first generation
of electric vehicles. The year 2008 is the de facto beginning of the era in allelectric
vehicle range. This year she has launched various marketing concepts
battery with a relatively high yield and affordable. Thus, it is expected that by
2010-2015 an electric car can be manufactured on a large scale performance
series at a price close to the price of petrol cars.
Keywords: electric cars, history, advantages, disadvantages, power
electric vehicles
Cuvinte cheie: automobile electrice, istoric, avantaje, dezavantaje,
alimentarea autovehiculelor electrice

79 AUTOMOBILE ELECTRICE – Partea I

20-80 AUTOMOBILE ELECTRICE – Partea a II-a

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ioana BĂLAN Mircea BEJAN la de

ELECTRIC CARS – Part II
The best solution to problems of environmental pollution is electric
vehicle (EV) as an alternative means of transport. Electric car is a vehicle that
uses an electric motor as a drive with electric power from a source, usually
battery. Over nearly two decades, 86 % of cars in circulation will be powered by
conventional motors. The year 2008 is the de facto beginning of the era in allelectric
vehicle range. This year she has launched various marketing concepts
battery with a relatively high yield and affordable. Thus, it is expected that by
2010-2015 an electric car can be manufactured on a large scale performance
series at a price close to the price of petrol cars. A study by University of
California at Berkeley shows that about 86 % of cars running on the streets will
be electric in 2030. The percentage is subject to the emergence of centres of
charge or change batteries developed globally so far. Automakers shift to
electric car, because, they say, is the solution to this deadlock international
profile of the industry.
It presents – in short characterization – some electric cars (or hybrid) of
some car manufacturers and world renowned specialist on such cars: Nissan,
Renault, Renault Nissan Alliance, Miles, Myers, Aptera, Phoenix, Shelby,
Mitsubishi, Peugeot, Continental, Johnson Controls, Saft, Tesla (Tesla
Roadster 2008) Phoenix Motors (U.S. SUV Phoenix, Phoenix SUT 2008),
Lightning (Lightning GT fastest UK electric car far without recharging 2008/700
CP/400 km/1-100 km/h in 4 seconds/price about euro 220,000), General
Motors (Chevrolet Volt U.S.), Toyota (JP), Mercedes (Germany), Opel
(Germany – Amper, 2011), Citroen (France Citroën C Zero, 2010) etc.
Keywords: electric cars, Nissan, Renault, Renault Nissan Alliance, Miles,
Myers, Aptera, Phoenix, Shelby, Mitsubishi, Peugeot, Phoenix Motors etc.
Cuvinte cheie: automobile electrice, Nissan, Renault, Renault Nissan Alliance,
Miles, Myers, Aptera, Phoenix, Shelby, Mitsubishi, Peugeot, Phoenix Motors etc.

80 AUTOMOBILE ELECTRICE – Partea a II-a

20-81 CERCETĂRI EXPERIMENTALE PRIVIND COMPORTAREA ÎN PLINĂ SARCINĂ A MOTORULUI SUPRAALIMENTAT MIXT

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Gligor MUNTEAN Raveca MUNTEAN la de

EXPERIMENTAL RESEARCH CONCERNING THE FULL
CHARGED OVERSUPPLIED MIXED ENGINE
In this paper we present the research performed on the full charged
6LDA engine on the DHC 1250 CP locomotives.
Keywords: turbocharger mixed, resonance tube
Cuvinte cheie: supraalimentare mixtă, tub de rezonanţă

81 CERCETĂRI EXPERIMENTALE PRIVIND

20-82 CAPTATOR AERODINAMIC AXIAL PENTRU AUTOCAMIOANE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Corneliu BIRTOK-BĂNEASĂ Sorin RAŢIU Vasile ALEXA la de

AXIAL STREAMLINED COLLECTOR FOR ROAD-TRUCKS
This work presents the achievement of a monitoring, recording,
processing and interpretation concept, at laboratory scale, of the pressure
along the intake manifold equipped with an axial streamlined collector for roadtrucks.
Keywords: wind sensor, intake, truck
Cuvinte cheie: captator aerodinamic, admisie, autocamion

82 CAPTATOR AERODINAMIC AXIAL PENTRU

20-83 CERCETAREA EROZIUNII PRIN CAVITAŢIE ÎN LABORATORUL DE MAŞINI HIDRAULICE DIN TIMIŞOARA

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Ilare BORDEAŞU Octavian OANCĂ la de

LA RECHERCHE SUR L’ÉROSION DE CAVITATION
DANS LE LABORATOIRE DE MACHINES
HYDRAULIQUES DE TIMISOARA
Le but de l’ouvrage est la promouvoir des capacités de recherche de
la résistance et le comportement pour les différents types de matériaux, utilisés
principalement dans la fabrication d’équipements hydrauliques, à l’érosion de
cavitation. En ce sens, sont présentées les appareils utilisées pour l’étude, les
photomicrographies significatives pour les dommages produites par cavitation,
des paramètres et les courbes spécifiques qui sont utilisées pour analyser le
matériel testé, du point de vue de son comportement pendant de la cavitation.
Keywords: cavitation erosion, vibration machine, material testing,
erosion parameter, characteristic curves
Cuvinte cheie: eroziunea prin cavitaţie, aparat vibrator, material testat,
parametru eroziune, curbe caracteristice

83 CERCETAREA EROZIUNII PRIN CAVITAŢIE ÎN

20-84 CONTROL PREDICTIV MULTIVARIABIL AL UNUI ELICOPTER COAXIAL ÎN MINIATURĂ

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Bogdan MUREŞAN Ioan NAŞCU Ionuţ MUNTEAN Ruben CRIŞAN la de

MULTIVARIABLE PREDICTIVE CONTROL OF A
MINIATURE COAXIAL HELICOPTER
In this paper two movements, strongly coupled, of a coaxial helicopter
are controlled using a multivariable control algorithm. On such a helicopter four
movements (yaw, altitude, pitch and roll) can be controlled with four actuators.
Using models liberalized around the hover position, for yaw and altitude, a
multivariable control algorithm was developed. Further, some simulation results
are presented and finally some advantages of using such a technique are
emphasized.
Keywords: multivariable control, predictive control
Cuvinte cheie: control multivariabil, control predictiv

84 CONTROL PREDICTIV MULTIVARIABIL AL UNUI

20-85 ELIMINAREA PIERDERILOR UTILIZÂND TEHNICILE DE FABRICAŢIE LEAN

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Gabriela-Veronica STOIANOVICI la de

WASTE ELIMINATION UTILISING LEAN
MANUFACTURING TECHNIQUES
This paper presents the necessity of knowing and applying of Lean
concept for today Manufacturing. Lean represents a concept, already used whit
certain benefit in manufacturing industry. The paper presents a synthesis of the
characteristics that define this concept, methods of application and some
significant results. One of the goals of this article is to provide to the readers the
informational resources for learning about possible implementation of Lean and
Just in time systems and the benefits derived from these process conversions.
Some possibilities of application of Lean concept in mass production are
analyzed.
Keywords: Lean manufacturing production concept, the system just in
time, pull/kanban, total productive maintenance
Cuvinte cheie: conceptul de producţie Lean manufacturing, sistemul
exact în timp, Pull/Kanban, mentenanţa productivă totală

85 ELIMINAREA PIERDERILOR UTILIZÂND

20-86 GRUP COMBINAT DE ACŢIONARE PENTRU ROBOSCAN

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Constantin CHIRIŢĂ Ioan I. POP Vlad BOCĂNEŢ la de

COMBINED DRIVE SYSTEM FOR ROBOSCAN
This paper presents a new drive system for the award winning
ROBOSCAN, which is the only mobile Gamma scanner in the world. To ensure
the low speed high torque needed for the scanning process, a new drive
system needs to be implemented. The proposed solution is a new drive system
with a hydrostatic transmission for the work movement and a mechanical
transmission for driving between locations. Being a new system, testing was
done to define its characteristics. By doing this the testing methods were
perfected.
Keywords: hydrostatic transmission, continuously variable
transmission, the group combined mechanical-hydraulic, mobile applications
Cuvinte cheie: transmisie hidrostatică, transmisie continuu variabilă,
grup combinat mecano-hidraulic, aplicaţii mobile

86 GRUP COMBINAT DE ACŢIONARE

20-87 STUDIUL PREDICTIV AL ANGRENAJELOR DIN MAȘINI-UNELTE

Această intrare a fost publicată în 2011 Volumul 20 și etichetată Florin ŢEPEŞ-BOBESCU Mariana ARGHIR la de

PREDICTIVE STUDY OF MACHINE-TOOLS GEARS
This paper is designed to offer a better understanding of the need for
predictive maintenance for safe operation of machine-tools and minimizing idle
time and reducing repair costs. The ultimate goal of predictive maintenance is
the implementation of maintenance works „when appropriate” before the
equipment is damaged during the operation.
Keywords: mechanical vibration, gears, machine tools, predictive
Cuvinte cheie: vibraţii mecanice, angrenaje, masini-unelte, predicţie

87 STUDIUL PREDICTIV AL ANGRENAJELOR