2016


30-35 ALEGEREA RUTEI PENTRU UN TRANSPORT AGABARITIC PRIN METODA ANALIZEI MULTICRITERIALE

CHOOSING A ROUTE FOR AN ABNORMAL TRANSPORT
TROUGH THE MULTI-CRITERIA ANALYSIS METHOD
Choosing the optimal route for an abnormal transport is a very difficult
problem, if there are more choices. The paper deals with the problem of
deciding the best route for the transport of some vary long traverses. The
distance – about 120 km- may be travelled in 2 ways: by highway A1 or by the
European roadway E81. The authors determined the cost for each alternative
and then considered another 4 criteria in order to perform a multi-criteria
analysis. The analysis shows that although European road involves lower
expenses, overall, highway transportation is more advantageous.
Keywords: transport oversized, multi-criteria analysis
Cuvinte cheie: transport agabaritic, analiza multicriterială

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30-34 ASPECTE PRIVIND ZONA DE DILEMĂ LA O INTERSECŢIE SEMAFORIZATĂ

THE DILEMMA ZONE ISSUES A TRAFFIC LIGHT
The paper analyzed some issues from time length of yellow traffic light
cycle. Influence of yellow time duration of the dilemma zone at a traffic light.
Keywords: urban transport street intersection, yellow period
Cuvinte cheie: transport urban, intersecţie, timp de galben

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30-33 IMPORTANȚA UTILIZĂRII DATELOR DE TELEDETECȚIE PENTRU MONITORIZAREA STĂRII DE VEGETAȚIE A CULTURILOR AGRICOLE

THE IMPORTANCE OF USING REMOTE SENSING DATA FOR
CROP VEGETATION STATE MONITORING
The paper highlights the usefulness of remote sensing data for crops
vegetation state monitoring. For this was chosen as a study area, the
Agricultural Research Station Caracal, located in Olt County, in the Region IV
South-West Oltenia. As remote sensing were used high resolution (Landsat,
spatial resolution 30 m data) and medium (MODIS (spatial resolution of 500 m)
satellite images. They were used to calculate to the following vegetation
indices: the normalized difference of vegetation index (NDVI), normalized
difference water index (NDWI) and normalized difference drought index (NDDI).
For a complete analysis was performed a correlation between the vegetation
indices and main agro-meteorological parameters registered to Caracal
meteorological station (rainfall and soil moisture).
Keywords: crops, remote sensing data, NDVI, NDWI, NDDI
Cuvinte cheie: culturi agricole, date de teledetecție, NDVI, NDWI, NDDI

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30-32 CONTRIBUȚIILE TEHNOLOGIILOR INFORMATICE LA ECONOMIA DE TIMP ŞI DOZAREA EFORTULUI ÎN FORMAREA ŞI ACTIVITATEA ELECTROTEHNICIENILOR

COMPUTER TECHNOLOGIES CONTRIBUTIONS TO THE
DETERMINATION OF TIME AND EFFORT ECONOMY ON THE
TRAINING ACTIVITY OF ELECTRICAL TEHNICIANS
This paper wants a pro bono advocacy, for the use discernment in the
field of information technologies (IT). In the approach that I will take still trying
to prove that the gaps in the basic and lack of professionalism cannot be
compensated by IT, on the other hand serious training coupled with the use of
software performance, lead to the some notable performances, especially in the
technical field.
Keywords: specialized software modelling – simulation – calculation
transfigure – ing star – delta and reverse method ”Dragg & Drop”
Cuvinte cheie: soft specializat modelare-simulare-calcul, transfigurarea
stea – triunghi și invers, metoda „Dragg & Drop”

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30-31 REGLAJUL DE STARE PENTRU PROCESE PT2 FOLOSIND MEDIUL SCILAB/XCOS

STATE CONTROL FOR A PT2 PROCESSES USING
SCILAB / XCOS ENVIRONMENT
This work aims to present the state control of a PT2 process, realizing
the numerical application, based on the Scilab/Xcos environment. Starting from
the model of state space representation for LTI systems, the controllability
property of the control system is checked, and based on the signal diagram of
state control is highlighted through simulation the step response for different
parameters respectively the pole-zero plan.
Keywords: state control, PT2 process, state space model, step
response, Scilab/Xcos environment
Cuvinte cheie: Regla

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30-30 INTERFAŢA INTELIGENTĂ OM-CALCULATOR ÎN MULTIDISCIPLINARITATEA ŞTIINŢIFICĂ

INTELLIGENCE INTERFACE MAN-COMPUTER
IN THE MULTIDISCIPLINARY SCIENTIFIC
The author, specialist and promoter of the IT&C and knowledges
management, present a synthesis Intelligence interface man-computer in the
multidisciplinary scientific in Romania, according with the European legislation,
which stimulates and optimizes the real economy to a durable development.
Present a synthesis some practical, original and actual solutions, of the modern
ergonomic activities organization, of the information society.
Concretely, the presentation contains aspects of doctoral research and
the evolution of digital technology and interface man-computer evolved in the
multidisciplinary engineering and even in the modern IT applications from the
global network aspects.
Keywords: knowledge management, durable development,
communications, biological implications, interface man-computer, information
society, digital technology, IT&C, intelligence interface
Cuvinte cheie: managementul cunoaşterii, dezvoltare durabilă,
comunicaţii, implicaţii biologice, interfaţă om-calculator, societatea
informaţională, tehnologie digitală, tehnologia informaţiei şi comunicaţiilor-TIC,
interfaţă inteligentă

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30-29 LOCALIZAREA IRISULUI PENTRU SISTEMUL BIOMETRIC DE IDENTIFICARE A PERSOANELOR

LOCATION IRIS BIOMETRIC PERSON IDENTIFICATION
Methods of iris localization are investigated and new methods for pupil
and limbus boundary detection are introduced. Pupil boundary detection is
done by first pre-processed the iris image using exponential stretch and
Laplacian filter. Then the center and the radius are calculated using newly
developed algorithm. This algorithm does not require any threshold value to
determine the initial center since it is specified automatically. For limbus
boundary detection, the integro – differential operator is used. CASIA database
v1.0 is used to test the efficiency of the given algorithms. The accuracy of
localizing the iris correctly reaches 92 %. All the algorithms were implemented
using programming language Turbo C++.
Sunt investigate și introduse noi metode de localizare a irisului și de
detectare a marginii pupilei și a limitei limbusului (marginea corneei).
Detectarea marginii pupilei se face prin procesarea imaginii irisului, folosind
extinderea exponențială a filtrului Laplacian. Apoi centrul și raza sunt calculate
folosind un nou algoritm. Acest nou algoritm nu necesită nici o valoare limită,
pentru a determina centrul inițial al ochiului, din moment ce acesta este
specificat automat. Pentru detectarea limitei limbusului, se folosește operatorul
diferențial – linie integro, (baza de date CASIA), folosit pentru a testa eficiența
algoritmilor dați. Acuratețea localizării irisului ajunge până la 92 %. Toți
algoritmii au fost implementați folosind limbajul de programare TURBO C ++.
Keywords: iris recognition biometric, human traits, security system,
improved appearance, pupil detection, detection of limbus
Cuvinte cheie: recunoașterea biometrică a irisului, trăsături umane,
sistem de securitate, imagine ameliorată, detectarea pupilei, detectarea
limbusului

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30-28 PROIECTAREA ASISTATĂ DE CALCULATOR ArtCAM A UNUI PROIECT 3D

3D ARTCAM COMPUTER AIDED DESIGN
The present paper describes a 3D Computer Aided Design project in
ArtCAM Software. The article summarizes the steps that lead to final 3D design
project. In the first step, we create a new project related to size: 300 mm length
of 200 mm width and 30 mm thickness; after we choose the type of milling,
turning him and effective processing size desired by the designer. Once the text
form and processing technology selected, we can move to the second, very
important, step, dimension conversion from 2D to 3D. In the 3D dimension, we
will design the desired text only after we generate to the text of milling
simulation. If based on the simulation text processing gives satisfaction, the file
will be saved in the machine to machine depending on the characteristics of
supported extensions.
Keywords: 2D to 3D conversion, 3D design, design, program, machine
code, ArtCam Software
Cuvinte cheie: conversia 2D în 3D, proiectare 3D, design, program cod
maşină, ArtCam Software

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30-27 INFLUENȚA REGIMULUI DE LUBRIFIERE ASUPRA CONFORMITĂȚII PIESELOR OBȚINUTE PRIN ȘTANȚARE LA RECE

INFLUENCE ON LUBRICATION REGIME REGARDING THE
PARTS OBTAINED BY COLD STAMPING/PRESSING
The paper aims to determine the optimal solution for the lubrication
elements and guide for stamping in order to obtain consistent parts in a large
series regime.
Keywords: stamping, lubrication, guide elements, certified parts,
experimental result
Cuvinte cheie:ștanță, lubrifiere, elemente ghidare, piese conforme,
rezultate experimentale

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30-26 DISPOZITIV PENTRU CONTROLUL ŞI VERIFICAREA RESPECTĂRII PERPENDICULARITĂŢII ALEZAJELOR INELELOR INTERIOARE ALE RULMENTULUI FAŢĂ DE FEŢELE FRONTALE

CONTROL DEVICE COMPLIANCE AND VERIFICATION OF
BEARING INNER RINGS BORES PERPENDICULAR TO
THE FACES FRONT
Given the fact that the bearings are part of machine parts moving
and rotating with variable speed, perpendicularity bores, to the front sides
must fall within the tolerances of microns in order not to cause warming shaft
or axle is mounted inside these bores bearings and not to enable the seizure
of rotating bodies moving of machines, installations and units concerned.
Keywords: machine parts, reaming, device, bearing
Cuvinte cheie: organe de maşini, alezaj, dispozitiv, rulment

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30-25 PRELUCRAREA DANTURILOR CONICE CURBE

THE BEVEL GEARS MACHINING
This study aims to present the bevel gears processing method. The
first part presents the theoretical aspects of the bevel gear. The second part
presents the effective method of their generation.
The theoretical study of bevel gears is very complex. The principle of
generating a bevel gear is represented by the generating of plane gear teeth
profile through a cutting tools system and then meshing between bevel gear
and plane gear during machining.
Taking into consideration the complexity of the bevel gears
processing, we do not claim that this study has exhaustively analyzed all the
aspects of this subject.
Keywords: bevel gear, plane gear, meshing
Cuvinte cheie: roată conică, roată plană, angrenare

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30-24 CALCULUL DE PREDIMENSIONARE AL ANGRENAJELOR CONICE

THE ROUGH SIZING CALCULATION OF THE BEVEL GEARS
This study aims to present the rough sizing calculation of the bevel
gear. In this study are presented the bevel gears type Klingelnberg.
The calculation has the purpose of determining the main elements of
the bevel gears: the minimum diameter of the pinion, the number of teeth for
the pinion and for the gear wheel, z1 and z2, the mean normal module mn, the
face width B and the mean spiral angle βm.
The final geometry calculation of the bevel gear Cyclo Palloid
Klingelnberg according to ISO 23509:2006 will be made using special
calculation program for machine design.
Keywords: bevel gear, pinion, mean spiral angle, face width
Cuvinte cheie: roată conică, pinion, unghiul de înclinare, lățime
dantură

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30-23 MODELAREA CONSTRUCŢIEI SCULELOR AŞCHIETOARE CU PLĂCUŢE SCHIMBABILE

MODELING THE CONSTRUCTION OF CUTTING
TOOLS WITH EXCHANGEABLE INSERTS
This paper makes improvements in the classical cycle of the research
and development for the new tools, by including simulation, structured
according to the following three steps: modeling the tool, reading the results on
virtual tests and choosing the optimum design. We exemplified the first step by
modeling the construction of a boring tool with twin special tangential inserts,
mounted directly on the tool’s cylindrical body, having a Ф116mm processing
diameter.
Keywords: modeling, cutting tools, exchangeable inserts, simulation,
variables, constraints, optimization, virtual
Cuvinte cheie: modelare, scule aşchietoare, plăcuţe schimbabile,
simulare, variabile, constrângeri, optimizare, virtual

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30-22 CONTRIBUŢII PRIVIND PARTEA ACTIVĂ A LĂRGITOARELOR CU PLĂCUŢE TANGENŢIALE

ASPECTS REGARDING THE ACTIVE PART OF BORING
TOOLS WITH TANGENTIAL INSERTS
The paper presents the main elements of the active part of boring
tools equipped with replaceable tangential inserts. Placing tangential insets of
different types of tools (cutters, boring tools etc.) is designed to reduce certain
aspects of their stress, such as the surface roughness. A short presentation of
the components of tangential insert place on the front of the boring tool is
followed by an analysis of the embodiments of the active part, in terms of
shape, inserts position and of cutting elements (faces, edges, vertices, angles).
At the end of the papers, it is proposed an original form for tangential inserts
used for the boring tool.
Keywords: boring tools, tangential inserts, forms, cutting edge,
clearance angle, rake angle, chips
Cuvinte cheie: lărgitoare, plăcuţe tangenţiale, forme, tăiş, unghi de
aşezare, unghi de degajare, aşchii

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30-21 MODELAREA LINIEI ELICOIDALE LA O FREZĂ CILINDRO-FRONTALĂ CU SCOPUL VERIFICĂRII ACESTEIA DUPĂ OPERAŢIA DE REASCUŢIRE A SUPRAFEŢEI DE DEGAJARE CU AJUTORUL UNOR MAŞINI DE CONTROL 3D (II)

MODELING PROFILE OF A HELICAL CUTTING DRUM FACE,
WITH THE PURPOSE VERIFICATION AFTER OPERATION OF
REGRINDING CLEARANCE SURFACE BY MEANS OF
CONTROL MACHINES 3D (II)
The paper presents the possibility of modeling the normal helical line
to end mills in order to check its operation after regrinding of the rake surface
using 3D machine control.
Keywords: helical motion, end mills, helical line
Cuvinte cheie: mișcare elicoidală, freză cilindro-frontală, linie elicoidală

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30-20 MODELAREA LINIEI ELICOIDALE LA O FREZĂ CILINDRO-FRONTALĂ CU SCOPUL VERIFICĂRII ACESTEIA DUPĂ OPERAŢIA DE REASCUŢIRE A SUPRAFEŢEI DE DEGAJARE CU AJUTORUL UNOR MAŞINI DE CONTROL 3D (I)

MODELING PROFILE OF A HELICAL CUTTING DRUM FACE,
WITH THE PURPOSE VERIFICATION AFTER OPERATION OF
REGRINDING CLEARANCE SURFACE BY MEANS OF
CONTROL MACHINES 3D (I)
The paper presents the possibility of modeling the normal helical line
to end mills in order to check its operation after regrinding of the rake surface
using 3D machine control.
Keywords: helical motion, end mills, helical line
Cuvinte cheie: mișcare elicoidală, freză cilindro-frontală, linie elicoidală

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30-19 PROCEDEU DE DETERMINARE A RANDAMENTULUI CUPLEI CINEMATICE TIP ROLĂ CILINDRU

METHOD FOR DETERMINING THE EFFICIENCY CYLINDER
ROLL CINEMATIC COUPLE
In this work is analyzed mechanical efiency by experimental research
using a device for helicoidally movement simulation.
The precision of helicoidally generation is determinate in relation
between normal force and acting torque. For accurate determination of the
measurements is made by electronic transducers for displacement and rotation.
Keywords: kinematic coupling, helical motion, rotation and displacement
transducer
Cuvinte cheie: cupla cinematică, mişcare elicoidală, traductor
deplasare şi rotaţie

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30-18 CERCETĂRI EXPERIMENTALE DE EROZIUNE CAVITAŢIONALĂ PE UN OŢEL ALIAT DE ÎMBUNĂTĂŢIRE CU UN CONŢINUT DE 97,2 % FIER

CAVITATION EROSION EXPERIMENTAL RESEARCH ON AN
IMPROVEMENT ALLOY STEEL WITH 97.2% IRON CONTENT
This paper presents the cavitation erosion experimental research on an
improvement alloy steel. The chemical compositions, also the name of this steel,
were identified using a spectrometer. After this analysis, iron content was 97.2 %
and the name of this steel has been identified as 41Cr4. The results are in tabular,
by graphic, as well as images and macrostructures presented and compared.
Keywords: cavitation erosion, 97,2 % Fe, macrostructure
Cuvinte cheie: eroziune cavitaţională, 97,2 % Fe, macrostructura

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30-17 ANALIZA DEZVOLTĂRII PROCESĂRII MATERIALELOR PRIN TURNARE

THE DEVELOPMENT ANALYSIS OF THE CASTING
MATERIALS PROCESSING
In present casting become a very important domain of materials
processing in the engineering arena. Achieving casting usually require a
greater complexity to the design and material processing to ensure a structural
integrity. Specific procedures for processing materials were continuously
developed and have come to represent today’s modern and efficient
alternatives for obtaining materials and products development prospects and
future use special.
Recent decades have marked the emergence of the current industrial
exploitation in the processing of materials, preoccupations more intensely
related to the reduction and optimization of material and energy consumption
linked with improving the environment.
Keywords: casting materials processing, technological development,
new Procedures
Cuvinte cheie: turnarea materialelor de prelucrare, dezvoltare
tehnologică, noi proceduri

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30-16 CONTACTE ELECTRICE PENTRU CURENŢI INTENŞI PRODUSE PRIN METALURGIA PULBERILOR

ELECTRICAL CONTACTS FOR STRONG CURRENTS
MADE BY POWDER METALLURGY
It was tested to be produced electrical contacts for strong currents by
infiltration after sintering, because the final density is much higher (11.100
kg/m3) and porosity is much lower (10.85 %). The infiltration after sintering
variant contains the steps: powder mixture preparation (W – 52 mass % – 520 g,
Ni – 2 mass % – 20 g, Cu – 46 mass % – 460 g, zinc stearate – 0,7 mass % – 7
g), homogenization, pressing (4.5 MPa), sintering (730 and 780 oC) and
infiltration (the green part is layed down on an electrocorindon EC 120 bed,
then the Cu green is on top of it, 1100 oC). In this variant the green part density
is almost constant (s = 0.062), with an identical porosity of the first after the end
of the process (14,28 %). By infiltration the density increased drastically (at
10,832 kg/m3), but its variations were increased also (s = 0.174) and porosity
decreased (at 10.85 %). The attained density is not sufficient for electrical
contacts work (11,100 kg/m3), but it is closer. The final composition of the
electrical contact was: W – 48.69 mass %, Ni – 1. 87 mass % and Cu – 49.44
mass %.
Keywords: sintered electrical contacts, W-Cu
Cuvinte cheie: contacte electrice sinterizate, W-Cu

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30-15 CERCETĂRI PRIVIND REABILITAREA PIESELOR PRIN ÎNCĂRCARE CU SUDURĂ

RESEARCH ON THE REHABILITATION OF PARTS
HARD SURFACING
The article presents a commonly used method for rehabilitation of parts
by welding load. The quality of rehabilitation is assessed by a set of
characteristics that give the reconditioned piece, the ability to meet the
necessary requirements, operating under normal conditions. Welding
instructions through material loading, are applied to the achievement of Francis
rotors type, on two components 1.4317 (GX4CrNi13-4)/SR EN 10213-2 cast
steel. These steels are ideal in terms of use conditions, where wear resistance
is really important, such as on hydraulic turbine components.
Keywords: rehabilitation, arc welded parts, charging by welding
Cuvinte cheie: reabilitare, piese sudate cu arc electric, încărcare prin
sudare

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30-14 PARTICULARITĂŢILE STRUCTURII ÎMBINĂRILOR LA SUDAREA MULTISTRAT

CHARACTERISTICS OF THE JOINTS STRUCTURE
AT MULTIPASS WELDING
The paper investigates the particularities of the welded joints structure at
multiphase welding, showing that the structure and properties of these joints is
not only influenced by the thermal action itself, but also by the metallurgical
phenomena from the metal subjected to welding.
Keywords: welded joints, thermal cycle, seam multilayer, heat wave
Cuvinte cheie: îmbinări sudate, ciclul termic, cusătură multistrat, undă
termică

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30-13 OPTIMIZAREA ÎNCĂLZIRII UNOR OŢELURI DE CALITATE ÎN VEDEREA PRELUCRĂRII PLASTICE

HEATING OPTIMIZATION OF HIGH GRADE STEELS
FOR PLASTIC PROCESSING
The research aimed at finding solutions for the dissolution in the
structural matrix of steel and the improvement in deformability. The results
allowed the optimization of the technology by reducing the heating-up duration,
and by dissoluting and globulising the ferrite.
Keywords: plastic processing, steel, structure
Cuvinte cheie: prelucrare plastică, oţel, structură

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30-12 PRESSURE REGULATORS FOR HIGH PURITY APPLICATIONS

REGULATOARE DE PRESIUNE FOLOSITE ÎN APLICAȚII
DE MARE PURITATE
Funcția de bază a unui regulator de presiune este de a accepta un
gaz de înaltă presiune dintr-un cilindru sau conductă, și de a reduce presiunea
la un nivel sigur și potrivit pentru o anumită aplicație.
The basic function of a pressure regulator is to accept a high-pressure
gas from a cylinder or pipe, and reduce the pressure to a safe level and
suitable for a particular application.
Keywords: Regulators, high purity gases
Cuvinte cheie: Regulatori, gaze de înaltă puritate

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30-11 RAMPĂ MOBILĂ TELESCOPICĂ CU ACŢIONARE HIDRAULICĂ PENTRU ACCES ÎN INTERIORUL CLĂDIRILOR PARTEA II – INSTALAŢIILE HIDRAULICĂ ŞI ELECTRICĂ

TELESCOPIC MOBILE RAMP WITH HYDRAULIC DRIVE FOR
ACCESS INSIDE OF THE BUILDINGS
PART II – ELECTRIC AND HYDRAULIC ECQUIPMENTS
The paper presents a telescopic mobile ramp with hydraulic drive for
access on upper levels inside of the of buildings. In the paper, is shows the
structural component of equipment, the technical characteristics and, also, its
usefulness in the actions of the Romanian Gendarmerie in its missions to
ensure public order and security.
Keywords: portable ramp telescopic, mobile hydraulic, scale hydro,
hydro-mechanical equipment
Cuvinte cheie: rampă mobilă telescopică, echipament mobil, acţionare
hidraulică, scară hidraulică, echipament hidro-mecanic

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30-10 RAMPĂ MOBILĂ TELESCOPICĂ CU ACŢIONARE HIDRAULICĂ PENTRU ACCES ÎN INTERIORUL CLĂDIRILOR PARTEA I – CONCEPŢIA GENERALĂ A ECHIPAMENTULUI

TELESCOPIC MOBILE RAMP WITH HYDRAULIC DRIVE FOR
ACCESS INSIDE OF THE BUILDINGS
PART I – GENERAL CONCEPTION
The paper presents a telescopic mobile ramp with hydraulic drive for
access on upper levels inside of the of buildings. In the paper, is shows the
structural component of equipment, the technical characteristics and, also, its
usefulness in the actions of the Romanian Gendarmerie in its missions to
ensure public order and security.
Keywords: portable ramp telescopic, mobile hydraulic, scale hydro,
hydro-mechanical equipment
Cuvinte cheie: rampă mobilă telescopică, echipament mobil, acţionare
hidraulică, scară hidraulică, echipament hidro-mecanic

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30-09 REFLEXIA INTERNĂ A LUMINII MONOCROMATICE PE FILME SUPERFICIALE DEPUSE PE SUBSTRATURI SOLIDE

THE INTERNAL REFLECTION OF MONOCHROMATIC LIGHT
ON SUPERFICIAL FILMS ON SOLID SUBSTRATES
Internal partial or total reflection present similitude and differences with
external reflection depending on the incidence angle of the light. Total reflection
has a major theoretical importance because complex aspects concerning the
interaction between light and superficial film. Both the analysis of the
parameters that decide upon the type of reflection and the manner of
interaction of the light with superficial films allow correct interpretation of
experimental measurements. Internal attenuated total reflection is one method
of investigation “in situ” of superficial films illustrated in this paper.
Keywords: internal reflection, superficial film, angle limit penetration
depth
Cuvinte cheie: reflexie internă, film superficial, unghi limită, adâncime
de pătrundere

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30-08 PROIECTAREA UNUI SISTEM SOLAR FOTOVOLTAIC INSULAR, CU AJUTORUL UNUI SOFTWARE DEDICAT

DESIGN OF AN OFF-GRID PV SYSTEM WITH A
DEDICATED SOFTWARE
This work aims to design and simulate, using a dedicated software,
Sunny Design Web, an open source application provided by SMA SOLAR
TECHNOLOGY, an off-grid photovoltaic system meant to ensure an
independent, smart and comfortable energy supply with solar power for private
households. Using this application, the designing process of PV systems has
become more simple and accessible for non-specialist in the field too, opening
on this the path to produce clean energy and provide energy independence for
many private households.
Keywords: PV system, design and simulate, monitoring system,
energy production, Sunny Design Web
Cuvinte cheie: sistem solar fotovoltaic insular, proiectare și simulare,
sistem de monitorizare, producţie de energie, Sunny Design Web

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30-07 OPTIMIZAREA MASICĂ A UNUI CAPTATOR SOLAR PLAN

MASS OPTIMIZATION OF A FLAT PLATE SOLAR
COLLECTOR
Usually a flat plate solar collector is characterized by constructivefunctional
data, the mass of a solar collector is a constructive characteristic,
which influences more the assembling and transport costs. This paper presents
a method of optimizing the mass characteristics of a flat plate solar collector, by
using materials with low specific mass. As a result of this optimization a 17 kg
flat plate solar collector was realized, resulting in a weight reduction of
approximately 57 % compared to a common solar collector.
Keywords: solar collector plan, mass optimization, solar
Cuvinte cheie: captator solar plan, optimizare masică, energie solară

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30-06 PILĂ SOLARĂ FOTOVOLTAICĂ ÎN BAZA CONTACTULUI n-In As – GEL CE CONŢINE PERECHEA REDOX St2+/4+

CELL SOLAR PHOTOVOLTAIC ON THE CONTACT N -IN AS –
GEL CONTAINING PAIR REDOX ST2 + / 4 +
In the article descripted the possibilities of obtaining some spectral and
photoelectric properties of solar element based an photo electrochemical chain
(+) Cu-C-MnO2-Gel-n-InAs-Cu (-).
Keywords: converting photo electrochemical solar, solar cell
Cuvinte cheie: convertizor fotoelectrochimic pentru energia solară, pilă
solară

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30-05 DINAMICA MECANISMULUI CENTRIFUGAL DE PROTECȚIE LA SUPRATURARE A ROTORULUI DE TURBINĂ EOLIANĂ DE PUTERE MICĂ

DYNAMICS OF THE CENTRIFUGAL MECHANISM FOR
PROTECTION AT OVERSPEED OF THE LOW
POWER WIND ROTOR TURBINE
Rotor over speed protection for small wind turbine power requires a
mechanical system cheap and reliable as possible. This is because any electric
or electronic device depends on the electrical power source that disaster
becomes unavailable. Of these centrifugal mechanism is priced at acceptable
cost, but contains some subtleties of interpretation of the method of operation.
In this paper, we explain step by step the original solution of this mechanism
put in place for a 5 kW wind turbine.
After triggering centrifugal mechanism speed is reduced to 20 … 30
rev / min and the effect of centrifugal mechanism is greatly reduced. So that the
force of compressed spring plus aerodynamic torque blade in relation to spindle
axis, returns the mechanism to its original work position. For that to occur
slowly, return must be controlled by a hydraulic damper or a blockingunblocking
flag position for the rotor blades.
Adjusting ballast weight of centrifugal mechanism and the reliable
automatically operation of the whole system should be checked repetitively on
a trial endurance stand.
Keywords: wind turbine, force, torque, protection centrifugal
mechanism at over speed
Cuvinte cheie: turbină eoliană, forțe, momente, mecanism centrifugal,
protecţie la supraturare

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30-04 CINEMATICA MECANISMULUI CENTRIFUGAL DE PROTECȚIE LA SUPRATURARE A ROTORULUI DE TURBINĂ EOLIANĂ DE PUTERE MICĂ

KINEMATICS OF THE CENTRIFUGAL MECHANISM FOR
PROTECTION AT OVERSPEED OF THE LOW POWER WIND
ROTOR TURBINE
Rotor over speed protection for small wind turbine power requires a cheap
and reliable mechanical system as possible. This is because any electric or
electronic device depends on the electrical power source that becomes
unavailable in disaster conditions. Of these, centrifugal mechanism is priced at
acceptable cost, but contains some subtleties of interpretation of the operation
mod. In terms of kinematics, centrifugal mechanism is reduced to a crank and
connecting-rod assembly with sliding piece. This paper presents schematically
this mechanism and the elements that govern the movement of the sliding
piece: race, speed and acceleration.
The mechanism function is alternative to a crank angle range of α =
0°…45°. Sliding piece is operated offset from the sliding axis. The complexity
consists in the fact that each blade is attached to the single sliding piece
through a rod and a crank. Thus the three rotor blades rotate simultaneously by
the cumulated action of the centrifugal force that occurs due to the rotating
counterweights.
Keywords: wind turbine, slide race, speed, acceleration, crank and
connecting-rod assembly
Cuvinte cheie: turbină eoliană, cursa culisei, viteza, accelerația, mecanism
bielă-manivelă

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30-03 CONSIDERAŢII CONCEPTUALE PRIVIND STABILITATEA TERMICĂ A ÎNCĂPERILOR DE TIP BIROU ÎNCĂLZITE PRIN SISTEME DE PARDOSEA

CONCEPTUAL CONSIDERATIONS ON THERMAL
STABILITY OF OFFICE ACCOMMODATION TYPE OF
FLOOR HEATING SYSTEMS
The paper addressed some aspects of the thermal behavior of
dynamic type office premises heated by radiant elements of tire installation
systems integrated low exergy
Keywords: exergy, radiating elements, thermally floor, potentially
reducing, dynamic – adaptive
Cuvinte cheie: exergie, elemente radiante, pardosea termoactivă,
potenţial de reducere, dinamic-adaptiv

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30-02 CONTRIBUȚIA SURSELOR REGENERABILE DE ENERGIE LA SECURITATEA ENERGETICĂ A REPUBLICII MOLDOVA

CONTRIBUTION TO RENEWABLE ENERGY SOURCES
ENERGY SECURITY OF MOLDOVA
Moldova’s energy sector represents a strategic branch of the national
economy. The level of development of this sector essentially determines
macroeconomic stability and energy security of the country and the success of
strategies and programs to achieve national economy.
Keywords: energy, energy security, forecasting, biomass, hydropower,
solar energy, wind energy
Cuvinte cheie: energie, securitatea energetică, prognoză, biomasă,
energia hidraulică, energie solară, energie eoliană

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30-01 EFICIENŢĂ ENERGETICĂ, DEZVOLTARE ŞI EDUCAŢIE – AJUTOR FRĂŢESC ŞI NECONDIŢIONAT DIN PARTEA ROMÂNIEI

ENERGY EFFICIENCY, DEVELOPMENT AND EDUCATION –
UNCONDITIONAL AND BROTHERLY HELP FROM ROMANIA
The increase in the cost of energy resources, the advanced
depreciation of the buildings, the degradation of the environmental quality and
the Moldova’s total dependence on the external energy markets, are essentially
the key arguments which require the promotion of some consistent national
policies in the field of energy efficiency in all spheres of human activity. In this
context one area over which it can act with certainty is the field of buildings. In
this paper we try to highlight the contributions of Romanians citizens through
the Romanian Government to the development of education and increasing the
energy efficiency in buildings preschool, and directly the development of the
other bank of the Prut – Republic of Moldova.
Keywords: Romania, energy efficiency, development, education
Cuvinte cheie: România, eficienţă energetică, dezvoltare, educaţie

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29-96 INGINERUL ALEXANDRE GUSTAVE EIFFEL (1832 – 1923) Partea a II-a

L’INGENIEUR ALEXANDRE GUSTAVE EIFFEL
(1832-1923) Partie II
Cet article présente, synthétiquement, les principaux repères de la vie
et l’activité de l’ingénieur français Alexandre Gustave Eiffel, réalisateur d’une
série de structures métalliques audacieuses – ponts, viaducs, édifices – qui ont
fait sa célébrité en France et dans le monde. Auteur d’une laborieuse activité
scientifique expérimentale – étant considéré comme un des fondateurs de
l’aérodynamique – et entrepreneuriale, A. G. Eiffel est aussi le constructeur de
la Tour qui porte son nom – devenu le symbole représentatif de Paris. Cette
Tour a joué un rôle essentiel pendant la première guerre mondiale, aux débuts
de la télégraphie sans fil et, ensuite, de la télévision. Ses remarquables
accomplissements, légués en héritage à l’humanité toute entière, sont dignes
de notre profonde reconnaissance.
Mots-clés: structures métalliques, ponts, viaducs, édifices,
aérodynamique, soufflerie, contraintes, flèche, hélice, projectiles, tour
Cuvinte cheie: structuri metalice, poduri, viaducte, clădiri,
aerodinamica, restricții de tunel de vânt, săgeată, spirală, proiectile, turn

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29-95 INGINERUL ALEXANDRE GUSTAVE EIFFEL (1832 – 1923) Partea I-a

L’INGENIEUR ALEXANDRE GUSTAVE EIFFEL
(1832-1923) Partie I
Cet article présente, synthétiquement, les principaux repères de la vie
et l’activité de l’ingénieur français Alexandre Gustave Eiffel, réalisateur d’une
série de structures métalliques audacieuses – ponts, viaducs, édifices – qui ont
fait sa célébrité en France et dans le monde. Auteur d’une laborieuse activité
scientifique expérimentale – étant considéré comme un des fondateurs de
l’aérodynamique – et entrepreneuriale, A. G. Eiffel est aussi le constructeur de
la Tour qui porte son nom – devenu le symbole représentatif de Paris. Cette
Tour a joué un rôle essentiel pendant la première guerre mondiale, aux débuts
de la télégraphie sans fil et, ensuite, de la télévision. Ses remarquables
accomplissements, légués en héritage à l’humanité toute entière, sont dignes
de notre profonde reconnaissance.
Mots-clés: structures métalliques, ponts, viaducs, édifices,
aérodynamique, soufflerie, contraintes, flèche, hélice, projectiles, tour
Cuvinte cheie: structuri metalice, poduri, viaducte, clădiri,
aerodinamica, restricții de tunel de vânt, săgeată, spirală, proiectile, turn

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29-94 NICOLAI COPERNIC – PĂRINTELE ASTRONOMIEI MODERNE (TORUŃ, 1473 – FROMBORK, 1543). Partea a II-a

NICOLAI COPERNIC – LE PÈRE DE L’ASTRONOMIE
MODERNE
On présente synthétiquement les principaux repères biographiques de
la fructueuse activité de Nicolas Copernic, à commencer par ses années de
formation – à l’école et aux universités fréquentées (Cracovie, Bologne, Padoue
et Ferrare) – et en continuant avec son travail de secrétaire et médecin
personnel de l’évêque Varmien, Lukas Watzelrode – son oncle -, ainsi qu’en
tant que chanoine de la Varmie et de la Poméranie. On met en évidence la
passion pour les mathématiques et l’astronomie du jeune étudiant et, plus tard,
sa ténacité à observer le ciel, ainsi que la persévérance de ses réflexions sur la
structure réelle de l’Univers.
Par crainte de la réaction de l’Église – qui était adepte du système
ptolémaïque, géocentrique – son ouvrage capital, «De revolutionibus Orbium
Caelestium», n’a été imprimé que dans l’année de sa mort, le système
ptolémaïque, héliocentrique s’avérant être réel, produisant ainsi une véritable
révolution en astronomie, en philosophie et en toute une série d’autres
sciences. On dit qu’il a été l’homme qui «arrêta le Soleil et qui mit la Terre en
marche»!
Mots-clés: Université, astronomie, univers, Terre, Soleil, planètes,
géocentrique, héliocentrique, cosmos
Cuvinte cheie: universalitate, astronomie, Pământ, Soare, planete,
univers, geocentric, heliocentric, cosmos

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29-93 NICOLAI COPERNIC – PĂRINTELE ASTRONOMIEI MODERNE (TORUŃ, 1473 – FROMBORK, 1543). Partea I-a

NICOLAI COPERNIC – LE PÈRE DE L’ASTRONOMIE
MODERNE
On présente synthétiquement les principaux repères biographiques de
la fructueuse activité de Nicolas Copernic, à commencer par ses années de
formation – à l’école et aux universités fréquentées (Cracovie, Bologne, Padoue
et Ferrare) – et en continuant avec son travail de secrétaire et médecin
personnel de l’évêque Varmien, Lukas Watzelrode – son oncle -, ainsi qu’en
tant que chanoine de la Varmie et de la Poméranie. On met en évidence la
passion pour les mathématiques et l’astronomie du jeune étudiant et, plus tard,
sa ténacité à observer le ciel, ainsi que la persévérance de ses réflexions sur la
structure réelle de l’Univers.
Par crainte de la réaction de l’Église – qui était adepte du système
ptolémaïque, géocentrique – son ouvrage capital, «De revolutionibus Orbium
Caelestium», n’a été imprimé que dans l’année de sa mort, le système
ptolémaïque, héliocentrique s’avérant être réel, produisant ainsi une véritable
révolution en astronomie, en philosophie et en toute une série d’autres
sciences. On dit qu’il a été l’homme qui «arrêta le Soleil et qui mit la Terre en
marche»!
Mots-clés: Université, astronomie, univers, Terre, Soleil, planètes,
géocentrique, héliocentrique, cosmos
Cuvinte cheie: universalitate, astronomie, Pământ, Soare, planete,
univers, geocentric, heliocentric, cosmos

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29-92 SISTEM AUTOMAT PENTRU ÎNCERCAREA LA TRACȚIUNE A PRODUSELOR COMPOZITE DIN CAUCIUC

SYSTEME AUTOMATISE POUR L’ESSAI
DES PRODUITS COMPOSITES EN CAOUTCHOUC
On pressente une solution pour moderniser une installation d’essai des
produits en caoutchouc [8], [9].La modernisation réside essentiellement dans le
remplacement des traducteurs de force de type inductif par des cellules de
traction plus précise (cellules dynamométriques), qui offre la possibilité d’avoir
une précision plus élevée du mesurage, de renoncer aux solutions mécaniques
pour mettre en évidence la déformation de la pièce et de les remplacer avec
des règles optiques, plus précises et plus facile d’intégrer dans un système
automatisé
Mots cles: system automate, essai de produits, produits composites
Cuvinte cheie: sistem automat, încercarea produselor, produse
compozite

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29-91 CONSIDERAȚII PRIVIND INFLUENȚA VIBRAȚIILOR ALEATOARE INDUSE DE VEHICULE ȘI CALEA DE RULARE ORGANISMULUI UMAN

CONSIDERATIONS REGARDING THE INFLUENCE OF
RANDOM VIBRATIONS INDUCED BY VEHICLES
AND HUMAN BODY RACEWAY
The Comfortability of modern vehicles is one of the most important
attributes that each of buyers who want the highest possible level, increasingly
more. Comfort depends on a number of external factors (raceway, damping
system, insulation/soundproofing) and internal (air conditioning system, interior
space, comfortability seats).
Isolation of vibration of the rails and vehicle body structure is the most
important aspect in reducing the destructive effects of the spine – the main area
affected, and the degradation of the muscular system, nervous, on the go. Seat
level vibration perception is different from the front to the rear because of the
different construction and equipment.
Keywords: random vibration, body, magnetorheological damper
Cuvinte cheie: vibrații aleatoare, organismul uman, amortizor
magnetoreologic

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29-90 ANALIZA TENSIUNILOR ȘI DEFORMAȚIILOR LA ȘASIUL UNUI VAGON DE MARFĂ CU PEREȚI ÎNALȚI ÎN URMA UNOR LUCRĂRI DE REPARAȚIE ȘI CONSOLIDARE

ANALYSIS OF TENSIONS AND DEFORMATIONS TO THE
CHASSIS OF A FREIGHT WAGON WITH HIGH WALLS
AFTER CONSOLIDATION AND REPAIR WORKS
This paper checks by the finite element method the solution to
strengthen the chassis of a boxcar with high walls in the process of corrective
and predictive maintenance railway vehicles run scheduled ungass works
inspections and repairs in order to keep running optimally or improved and
increase transport capacity correlated with the life extension of the rail vehicle
Keywords: freight wagon loads, stresses, strains, maintenance
Cuvinte cheie: vagoane de marfă, sarcini, tensiuni, deformaţii,
mentenanţă

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29-89 TENSIUNI REMANENTE ȘI METODE DE DETENSIONARE A CADRELOR BOGHIURILOR VAGOANELOR DE CĂLĂTORI

RESIDUAL STRESS AND METHODS OF STRESS RELIEF
FOR COACHES BOGIE FRAMES
The study has pursued experimental determination of residual
stresses in the bogie Minden-Deutz that equips coaches Series 209, the
efficiency of the applied stress relieving treatment and the possibility to shift
towards the dimensional stabilization through vibrations.
Keywords: residual stress, bogie
Cuvinte cheie: tensiuni remanente, boghiu

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29-88 LUCRUL CU PROGRAMUL SOLIDWORKS PENTRU CALCULUL FRECVENŢEI PROPRII A UNUI CUB UTILIZÂND STUDIUL DE TIP „FRECVENŢĂ”

WORKING WITH SOLIDWORKS SOFTWARE FOR THE
CALCULATION OF NATURAL FREQUENCY OF A CUBE
USING THE „FREQUENCY” TYPE STUDY
This paper presents the work with SolidWorks software regarding the
Simulation module respectively the „Frequency” type study. This type of study will
highlight the calculation and results for the natural frequency of vibration modes for
a cube with the side of 50 mm. To see how the natural frequency values can be
change, different geometries of the same designed 3D cube will be make.
Keywords: SolidWorks software, study, natural frequencies, cube
Cuvinte cheie: programul SolidWorks, studiu, frecvenţe proprii, cub

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29-87 INFLUENȚA RIGIDITĂȚII MECANICE ASUPRA FRECVENȚELOR PROPRII DE VIBRAȚIE A CADRELOR METALICE

THE INFLUENCE OF MECHANICAL STIFFNESS ON EIGEN
FREQUENCIES OF VIBRATION AT METAL FRAMES
This paper presents a study regarding the changes of the natural
frequency of trusses due to stiffness increase. The finite element analysis was
performed, considering a constantly increasing of stiffness of frame. In this way,
the correlation between frequency changes in the transversal vibration modes
and stiffness for the studied frames is highlighted.
Keywords: stiffness, eigen frequency, vibration mode, FEM
Cuvinte cheie: rigiditate, frecvente proprii, moduri de vibraţie, MEF

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29-86 METODE DE EVIDENŢIERE A FRECVENŢELOR APROPIATE

METHODS TO HIGHLIGTH CLOSE FREQUENCY
This paper offers an overview of simpler methods to accurately
estimate frequencies. In standard signal processing, the precision of frequency
estimation increases once the frequency resolution is improved. A finer
resolution is achieved by increasing the observation time interval. If this cannot
be done, the signal length can be artificially extended through the so-called
”zero-padding” method, by adding a number of samples with null amplitude.
The methods have been tested for concrete cases, using the signal processing
tool offered by the open source software, Scilab.
Keywords: signal processing, spectral analyze, “zero-padding” method,
Scilab environment
Cuvinte cheie: procesarea semnalelor, analiza spectrală, metoda
“zero-padding”, mediul Scilab

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29-85 DIMINUAREA DEFECTELOR CE APAR ÎN PROCESUL DE FABRICAȚIE AL ROLELOR DE RULMENT

SHRINKING FAILURE OCCURRING MANUFACTURING
PROCESS OF ROLLER BEARINGS
This paper contains a brief overview of the flow of production of roller
bearings that equip radial model practiced by the firm INA/Germany. The focus
is on defects occurring in different phases that are unusable respective rolls. Is
a case study and propose a method of reducing the defects reported
Keywords: radial roller bearing, INA/Germany, polishing process
Cuvinte cheie: rulment radial cu role, INA/Germania, procedeu de
lustruire

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29-84 DEFECTE SEMNALATE LA LAGĂRELE DE ROSTOGOLIRE ÎN TIMPUL EXPLOATĂRII

FAULTS REPORTED TO CAMPS ROLLING IN SERVICE
This paper contains a brief overview of defects occurring in rolling
bearings during operation. Currently, design and manufacture various types of
bearings concerned several production units worldwide. The first three
prestigious companies in Europe are: SKF / Sweden, SNR / France and INA /
Germany. Replacing sliding bearings with roller bearings is made in the context
of the cruising speeds of vehicles grow continuously and need that from stage
design to ensure maximum safety during operation thereof by eliminating
possible defects that can occur.
Keywords: bearing, faulty operation, prestigious companies
Cuvinte cheie: rulment, defecte în exploatare, firme de prestigiu

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29-83 STUDIUL STĂRII DE TENSIUNI ŞI DEFORMAŢII CE APAR ÎN ROLELE DE RULMENT DE DIMENSIUNI MICI ÎN TIMPUL CONTACTULUI DINTRE CAPUL ROLEI ŞI GENERATOARE CÂND UNGHIUL DE IMPACT ESTE CUPRINS ÎNTRE 0° ÷ 60°

THE STUDY OF STRESS AND STRAIN OCCURRING IN
SMALL BEARING WHEELS DURING THE CONTACT
BETWEEN THE HEAD PULLEYS AND GENERATING THE
ANGLE OF IMPACT IS BETWEEN 0° ÷ 60°
The paper presents comparative way using numerical techniques for
modeling dynamic physical phenomena occurring at impact between two rolls
with a diameter of 16 mm in several distinct situations to clash head –
generating at an angle to an angle between 0° ÷ 60°. Analyzed situations occur
frequently in the manufacturing of cylindrical rollers that equip small radial
bearings.
Keywords: cylindrical roller, impact, stress, displacement
Cuvinte cheie: rolă cilindrică, impact, tensiuni, deformaţii

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29-82 STUDIUL CIOCNIRII ROLELOR DE RULMENT RADIAL PRIN METODE NUMERICE DE CALCUL

BALL BEARINGS RADIAL COLLISION STUDY
BY NUMERICAL CALCULATION
The paper shows that the wheels now fitted radial bearings collide
during the manufacturing process. As a result of this rolls surface defects occur
due to collision elastic-plastic material. For different cases of collision was
made a study on the state of stresses and strains using the Finite Element
Method.
Keywords: radial roller bearing, Elastoplast’s clash, finite element
method
Cuvinte cheie: rulment radial cu role, ciocnire elasto-plastică, metoda
elementelor finite

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