Arhivă Revista


24-32 PRACTICA VALORIFICĂRII ENERGETICE A PAIELOR ÎN REPUBLICA MOLDOVA

ОПЫТ ЭНЕРГЕТИЧЕСКОГО ИСПОЛЬЗОВАНИЯ
СОЛОМЫ В РЕСПУБЛИКЕ МОЛДОВА
Располагаемый энергетический потенциал соломы в Республике
Молдова составляет 4…10 % от общего энергопотребления. Средняя
влажность сжигаемой соломы составляет 10,09 %, средняя теплота
сгорания – 14,47 MJ/kg. Котлы работают с к.п.д. в 1,5…2,0 раза ниже
паспортного. Выбросы парниковых газов сокращаются за счет замещения
природного газа соломой на 400…500 kg CO2eq на тонну соломы. С
ростом номинальной теплопроизводительности котла на 100 kW
себестоимость производимого тепла снижается на 6…8 %.
Cuvinte cheie: paie, cazan, randament, emisii
Ключевые слова: солома, котел, к.п.д., выбросы

32 PRACTICA VALORIFICĂRII ENERGETICE


24-33 RECICLAREA CARDURILOR

CARDS RECYCLING
Increased use of different materials in the manufacture of products
alongside scale use increasingly larger plastics led to the complex problems
related to recycling at end of life. Reducing the amount of material deposited is
a goal that should be taken into consideration at all times complies in recycling
of materials in accordance with the law more restrictive. Explore the possibility
of reducing plastics recycling materials from cards stored results represents the
desire of this article. Based on the analysis and determinations are capabilities
and experimental results illustrated the fundamental data about recycling of
materials in reducing the amount of plastic land filled.
Cuvinte cheie: materiale de reciclare, reciclare, impactul de mediu,
carduri reciclabile
Keywords: recycling, materials recycling, environmental impact,
recycled cards

33 RECICLAREA CARDURILOR


24-34 MINIMIZAREA IMPACTULUI GENERAT DE CĂTRE DEPOZITELE DE DEŞEURI PERICULOASE ASUPRA MEDIULUI LA NIVELUL MUNICIPIULUI CLUJ-NAPOCA PRIN INTERMEDIUL TRANSPUNERII LEGISLAŢIEI EUROPENE

MINIMIZING THE IMPACT GENERATED BY HAZARDOUS
WASTE LANDFILLS ON THE ENVIRONMENT IN CLUJNAPOCA
MUNICIPALITY BY THE TRANSPOSITION OF E.U
LEGISLATION
The environmental impact generated by hazardous waste landfill is a
special issue due to the degree of hazard posed, so it requires special
attention. This paper aims to present the evolution of hazardous waste landfills
and the strategy of minimizing the environmental impact and human health
through the EU legislation transposed into the national context.
The study is based on the measures taken by the trader to a hazardous landfill
following the transposition of the European Directive 99/31/EC on landfill.
In the municipality of Cluj-Napoca, hazardous waste landfill belonging
to the society of Terapia, was considered non-compliant in the 349/2005 law
context. As a result of the adoption of the European legislation, has made a
comparative study of standards of hazardous waste in the municipality of Cluj-
Napoca before and after the implementation of the European Directive
99/31/EC.
Cuvinte cheie: impact, deşeuri periculoase, factori de mediu, directiva,
minimizarea impactului asupra mediului.
Keywords: impact, hazardous wastes, environmental factors, directive,
minimizing the environmental impact

34 MINIMIZAREA IMPACTULUI GENERAT DE CĂTRE DEPOZITELE DE DEŞEURI PERICULOASE ASUPRA MEDIULUI LA NIVELUL MUNICIPIULUI CLUJ-NAPOCA PRIN INTERMEDIUL TRANSPUNERII LEGISLAŢIEI EUROPENE


24-35 CERCETAREA INFLUENŢEI FACTORILOR DE INTRARE ASUPRA EFICIENŢEI DE SEPARARE ÎN CÂMP ELECTRIC A PRAFULUI DIN AERUL VENTILAT

INFLUENCE ENTRANCE FACTORS RESEARCH
TO IONIC-ELECTRONIC PURIFICATION
A VENTILATION AIR
The paper includes the results of a theoretical study, achieved by
comparing media selection method, using dispersion analysis, in which we
chose emphasizing the input factors influenced, to achieve separation of
mechanical particles of ventilation air by electrical methods, and the
establishment of a mathematical model that would adequately describe the
process of separation studied.
Cuvinte cheie: câmp electric, electrozi injectori, intensitatea câmpului
electric, vânt electric
Keywords: camp, injectori electrodes, electric field intensity, wind
electric

35 CERCETAREA INFLUENŢEI FACTORILOR DE


24-36 CERCETAREA INFLUENŢEI PARAMETRILOR FUNCŢIONALI DE REGIM ASUPRA EFICIENŢEI DE SEPARARE A PARTICULELOR ÎN CÂMP ELECTRIC ALTERNATIV DE TENSIUNE ÎNALTĂ

INFLUENCE ENTRANCE FACTORS RESEARCH
TO IONIC-ELECTRONIC PURIFICATION
A VENTILATION AIR
The paper includes the results of a theoretical study, achieved by
comparing media selection method, using dispersion analysis, in which we
chose emphasizing the input factors influenced, to achieve separation of
mechanical particles of ventilation air by electrical methods, and the
establishment of a mathematical model that would adequately describe the
process of separation studied.
Cuvinte cheie: câmp electric, electrozi injectori, intensitatea câmpului
electric, vânt electric
Keywords: camp, injectori electrodes, electric field intensity, wind
electric

36 CERCETAREA INFLUENŢEI PARAMETRILOR FUNCŢIONALI DE REGIM ASUPRA EFICIENŢEI DE SEPARARE A PARTICULELOR ÎN CÂMP ELECTRIC ALTERNATIV DE TENSIUNE ÎNALTĂ


24-37 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL

RESEARCH AND DEVELOPMENTS ON NOISE POLLUATION
IN INDUSTRIAL ENVIRONMENTS
The document shows the importance of studying and research the
phenomenon of noise pollution which is a current issue both internationally and
nationally, because it affects people and causes so-called occupational
diseases. But we have to consider that the main source of noise pollution is
industrial environment.
Cuvinte cheie: poluare sonorǎ, impactul zgomotului, mediul industrial
Keywords: pollution, noise, impact sound environment design

37 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL


24-38 CONSIDERAŢII PRIVIND CREŞTEREA PUTERII ŞI REDUCEREA ZGOMOTULUI PENTRU TURBINELE EOLIENE DE MICĂ PUTERE CU PALETE PREVĂZUTE CU WINGLET

CONSIDERATIONS ABOUT POWER INCREASING AND
NOISE REDUCTION FOR LOW POWER WIND TURBINES
WITH TURBINE BLADE WITH A WINGLET
The low power wind turbines are being designated for locations that
have as a characteristic a moderate wind regime. These are placed in the
proximity of human habitation, where is necesary to reduce the aerodynamic
noise. Adding a winglet bended towards upstream side to the existing blade
increase the force distribution on the blade and increase the produced power.
The winglet bended towards downstream side reduces the aerodynamic noise.
Cuvinte cheie: turbine de vânt de mică putere, zgomot aerodinamic,
capătul paletei, vizualizări în tunel aerodinamic
Keywords: low power wind turbines, aerodynamic noise, winglet,
visualizations in aerodynamic tunnel

38 CONSIDERAŢII PRIVIND CREŞTEREA PUTERII ŞI REDUCEREA ZGOMOTULUI PENTRU TURBINELE EOLIENE DE MICĂ PUTERE CU PALETE


24-39 ASPECTE PRIVIND ANALIZA FENOMENELOR DE POLUARE PRODUSĂ DE MIJLOACELE DE TRANSPORT

ASPECTS OF THE ANALYSIS OF NUISANCES OF
POLLUTION PRODUCED BY MEANS OF TRANSPORT
The work shall be having some ways of analysis of the chemistry of
internal combustion engines of the means of transport. The results obtained
allow the assessment variation in time of noise nuisance concentrations in the
atmosphere free.
Cuvinte cheie: difuzia gazelor, concentraţie, coeficient de difuzie,
gradienţi de concentraţie, nor poluant, elemente finite
Key words: diffusion, gas concentration, diffusion coefficient, the
concentration gradients, cloud, finite elements

39 ASPECTE PRIVIND ANALIZA FENOMENELOR DE POLUARE PRODUSĂ DE MIJLOACELE DE TRANSPORT


24-40 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN TRANSPORTURI

RESEARCH AND DEVELOPMENTS ON NOISE
POLLUATION IN THE TRANSPORTS
The document shows the importance of reducing noise pollution from
transport and to identify the factors underlying pollution. There are applied to
Cluj-Napoca municipality because it is one of the busiest cities from Romania
Cuvinte cheie: zgomot, frecvenţă, intensitate sonoră, poluare sonoră

40 STUDII ŞI CERCETĂRI PRIVIND POLUAREA


24-41 DETERMINAREA EXPERIMENTALĂ A NIVELULUI ZGOMOTULUI PROFESIONAL, CU IMPLICAŢII ASUPRA SĂNĂTĂŢII OPERATORULUI UMAN

EXPERIMENTAL DETERMINATION OF PROFESSIONAL
NOISE, WITH WORKERS HEALTH IMPLICATIONS
This paper presents measurement results of noise level emitted by a
lathe and effects of noise on health worker. It was noted that in some
circumstances the maximum allowable is exceeded which requires the use of
means of protection.
Cuvinte cheie: zgomot profesional, maşini-unelte, afecţiuni auditive
Keywords: noise, machine tools, auditory disorders

41 DETERMINAREA EXPERIMENTALĂ A NIVELULUI ZGOMOTULUI PROFESIONAL, CU IMPLICAŢII


24-42 TEHNICA FUZZY – MIJLOC DE EVALUARE A POLUĂRII SONORE ÎN MUNICIPIUL BISTRIŢA

FUZZY TECHNIQUE – EVALUATION METHOD OF NOISE
POLLUTION IN THE BISTRIŢA MUNICIPALITY
This paper contains a new method for the noise pollution study based
on the fuzzy technique, applied to the Bistriţa municiplaity. This method was not
used until this moment for the noise study, but this is a very good method
because it is a non invasive method end can be applied with succeful for the
noise pollution study. This aspect will be demonstrate in this paper.
Cuvinte cheie: poluare sonorǎ, tehnica fuzyy, metoda neinvazivǎ
Keywords: pollution sound, fuzyy technique, method noninvasive

42 TEHNICA FUZZY – MIJLOC DE EVALUARE


24-43 DETERMINAREA ATENUĂRII ZGOMOTULUI ÎN CAZUL UTILIZĂRII UNUI PANOU VERTICAL

DETERMINE IF NOISE ATTENUATION USE
A VERTICAL PANEL
This paper presents a taking the case of highway model consists of 4
lanes, avad 3.75 m on each band, two emergency lanes and a 3 m wide range
depasare separation between the meanings of 2.5 m Was defined attenuation
provided by a vertical panel with a height of 2, 2.5, 3 and 3.5 m, mounted on
the edge of highways on the frequency range 62.5 – 500 Hz.
Cuvinte cheie: panou vertical, ecranare acustică
Keywords: vertical panel, acoustic shielding

43 DETERMINAREA ATENUĂRII ZGOMOTULUI


24-44 CAPTAREA ENERGIEI SOLARE ȘI UTILIZAREA EI PENTRU ÎNCĂLZIREA APEI MENAJERE ȘI LA HELIOSTRATIFICAREA BUTAȘILOR ALTOIȚI DE VIȚĂ DE VIE

CAPTURING SOLAR ENERGY AND ITS USE FOR
WATER HEATING AND HELIOSTRATIFICAREA
COVERS OF GRAFTED VINES
Energy is one of the foundations of national economies of various
countries. Climate stability can be retrieved by switching to an energy economy
based on fossil fuels to one based on renewable energy sources (wind-wind,
Sun-capturing solar energy, biomass, same time) and hydrogen.
Use of renewable energy is developed a new technology in the field of
wine helio-layering. The new technology is based on the principle of using solar
energy (radiation) in the process of layering of vine cuttings. The basic principle
of this technology is capturing solar energy (radiation), magazinarea and
transporting them to the consumer – thermal heated mats with termoagentwater
Cuvinte cheie: energetică, energie solară, heliostratificarea, butași de
vie, covorașe termice încălzite cu apă
Keywords: energy, solar, helio-layering, seedlings, mats, heated with
thermal water

44 CAPTAREA ENERGIEI SOLARE ȘI UTILIZAREA EI PENTRU ÎNCĂLZIREA APEI MENAJERE ȘI LA HELIOSTRATIFICAREA BUTAȘILOR


24-45 ASPECTE PRIVIND MODELAREA TRANSFERULUI DE LICHID LA FILTRAREA APEI PRINTR-UN FILTRU DE NISIP

ISSUES REGARDING THE TRANSFER OF MODELLING
LIQUID TO WATER FILTRATION THROUGH A SAND FILTER
This paper brings study of hydrodynamic filtration laws and their
mathematical equations. Hydrological problems are formulated according
deterministic and stochastic methods. Modelling principles are presented for
solving specific hydrological issues.
Cuvinte cheie: legea lui Darcy, starea de echilibru, flux saturat, flux
tranzitoriu saturat, principii de modelare
Keywords: Darcy’s law, steady-state saturated flow, transient saturated
flow, modelling principles

45 ASPECTE PRIVIND MODELAREA


24-46 DETERMINAREA CALITĂȚII APEI DIN ECOSISTEMUL LACUL BABADAG

WATER QUALITY-DETERMINATION OF
THE BABADAG LAKE ECOSYSTEM
Black Danube is declared the biggest natural reservation from Europe.
Due to the fact that Danube river is a water collector in Europe, it flows all the
impurities and pollutants that people discharge into rivers, which are affluent of
Danube. The present study is a warning against water pollution in the Danube
Delta, pollution that may affect biodiversity.
Cuvinte cheie: Delta Dunării, Lacul Babadag, apă poluată
Key words: Danube Delta, Babadag Lake, polluted water

46 DETERMINAREA CALITĂȚII APEI


24-47 UNELE MODALITĂŢI DE ESTIMARE A FIABILITĂŢII SUBSTANŢELOR CHIMICE ORGANICE SPECIALE

SOME WAYS TO ESTIMATE OF THE RELIABILITY
OF THE CHEMICALS SPECIAL ORGANIC
This paper presents some ways to estimate the reliability of
pyrotechnic substances, explosives, fuels for rocket engines, both in storage
and during their use. Adequate valuation leads to good prevention during
operation, storage, handling, and storage and city life.
Cuvinte cheie: explozivi, combustibil, fiabilitate, funcţia de fiabilitate,
intensitatea defectelor, densitate de repartiţie
Keywords: explosives, fuel, reliability, dependability, fault, intensity
distribution density

47 UNELE MODALITĂŢI DE ESTIMARE A FIABILITĂŢII


24-48 OBSERVAȚII ASUPRA DEVERSĂRILOR ACCIDENTALE DE PRODUSE PETROLIERE

ACCIDENTAL RELEASE NOTES ON
PETROLEUM PRODUCTS
Economic and social development requires economic benefits from
the sale and transportation of petroleum products, however, while their
consumption occurs a negative impact of oil spills both in terms of economic,
social and environmental impacts.
Cuvinte cheie: poluare, produse petroliere
Key words: pollution, petroleum products

48 OBSERVAȚII ASUPRA DEVERSĂRILOR


24-49 UTILIZAREA APEI ÎN JET PULVERIZAT PENTRU STINGEREA INCENDIILOR

THE USE OF WATER SPRAY IN FIRE FIGHTING
The intervention of fire fighting teams requires a series of activities
with the aim of limiting propagation and fire extinction. In the operational
procedures of intervention, setting distance and safety measures takes an
important place. The spray water facing the thick smoke may remove some of
its components and allow better local visibility to discover focus and act on it
directly, eliminating unnecessary water consumption. Using water spray is
important for fire safety and in terms of reducing the amount of water used.
Cuvinte cheie: apă, jet pulverizat, incendiu
Keywords: water, jet spray, fire

49 UTILIZAREA APEI ÎN JET PULVERIZAT


24-50 SISTEME DE EVACUARE A FUMULUI UTILIZATE LA HOTELURI

FIRE SMOKE EXHAUST SYSTEMS AND
EQUIPMENT USED IN HOTELS
This paper present some aspects regarding fire and smoke movement
in a hotel building and which are the smoke control methods to ensure the fire
safety of the building and fire protection of its occupants. Also, will be presented
subjects as smoke and exhaust ventilation systems and equipment used in
hotels and what role ventilation plays when a fire occurs in a hotel, which are
the interaction with other fire protection systems and other building systems.
Cuvinte cheie: securitatea la incendiu, evacuarea fumului, hotel,
incendiu
Keywords: fire safety, smoke evacuation, hotel, fire

50 SISTEME DE EVACUARE A FUMULUI


24-51 NOTE PRIVIND MODELAREA MATEMETICĂ ÎN REGIM CVASI-DINAMIC A UNEI CLASE DE MICROTURBINE HIDRAULICE

NOTES ON THE MATHEMATICAL MODELING IN
QUASI-DYNAMIC REGIME OF A CLASSES
OF MICROHYDROTURBINE
The paper presents an analysis of the behavior of a special class of
micro turbines – the cross flow hydraulic turbines, also called Banki – Michell
turbines in cvasi–static and dynamic regimes.
Cuvinte cheie: modelare matematică, microturbine, regimuri cvasi
statice, regimuri dinamice
Keywords: mathematical modelling, quasi static micro turbine,
regimes, dynamic systems

51 NOTE PRIVIND MODELAREA MATEMETICĂ


24-52 OPTIMIZAREA CURGERII ÎN TURBINELE HIDRAULICE CU AJUTORUL CALCULULUI NUMERIC

FLOW OPTIMIZATION IN HYDRAULIC TURBINES BY
NUMERICAL COMPUTING METHODS
The increasing need of green energy on the daily market [1] leads to
the optimization of the design approach of hydraulic machinery, Kaplan and
Francis turbines as well. The required costs (test rigs and time spent) to test
experimentally the hydraulic performances of several technical solutions for a
particular model of a power plant shows that a better way would be to develop
numerical techniques for hydrodynamics optimization. This would increase the
energo-cavitational performances for the studied hydraulic models.
Cuvinte cheie: turbine Kaplan, turbine Francis, optimizare numerică,
dezvoltare de software, analiza rapidă a curgerii
Keywords: Kaplan turbines, Francis turbines, numerical optimization,
software development, fast flow analysis

52 OPTIMIZAREA CURGERII ÎN TURBINELE HIDRAULICE CU AJUTORUL CALCULULUI NUMERIC


24-53 REZULTATE ALE SIMULĂRII COMPUTERIZATE A CURGERII PRIN TURBINA CROSS-FLOW TIP HYE 10a

RESULTS OF COMPUTATIONAL FLUID DYNAMICS
SIMULATION THROUGH HYE 10a CROSS-FLOW TURBINE
In this paper are presented the results of CFD simulations performed
on turbine named HYE 10, made at the S.C. Hydro Engineering SA Resita. The
cross-flow turbine equips a micro-hydro power unit with 8.25 kW calculated
hydraulic power.
Cuvinte cheie: rezultate, simulare computerizată, curgere, putere
hidraulică, 8,25 kW
Keywords: results, computational fluid dynamics, flow, hydraulic power,
8.25 kW

53 REZULTATE ALE SIMULĂRII COMPUTERIZATE A CURGERII PRIN TURBINA CROSS-FLOW TIP HYE 10a


24-54 O ÎNCERCARE DE FORMARE DOP DE GHEAŢĂ PE UN TRONSON DE CONDUCTĂ ORIZONTALĂ ÎNTR-O BUCLĂ HIDRAULICĂ EXPERIMENTALĂ DE JOASĂ PRESIUNE

AN ATTEMPT TO FORM AN ICE PLUG ON HORIZONTAL
PIPE SECTION INTO LOW PRESSURE HYDRAULIC
EXPERIMENTAL LOOP
In the pipe-line installation, using fluids in liquid state at maximum
temperature of 30°C, the ice plugging technique assumes to form an ice plug
under controlled process inside of horizontal pipe line. The ice plug is
maintaining until completion of the maintenance / repair works made in circuit
without shut-down installation. Development of such applications by the
Institute for Nuclear Research assumes to perform design works, elaboration
and qualification of fabrication/ testing technology for some applications
considered as representatives and accumulation of experience required for
handling at detail level of ice plug primary forming and local extension for few
flow agent types used in domestic and industrial installations.
The paper describes a constructive and functional description of the
experimental technological facilities. The first results and some conclusions are
presented. The paper is dedicated to specialist working in the research and
technological engineering.
Cuvinte cheie: oprirea curgerii, dispozitiv de formare dop de gheaţă,
apă demineralizată, transfer de masă
Key words: cutting-off the flow, ice plugging device, demineralised
water, mass transfer

54 O ÎNCERCARE DE FORMARE DOP DE GHEAŢĂ


24-55 METODĂ ANALITICĂ ŞI EXPERIMENTALĂ PENTRU DETERMINAREA COEFICIENTULUI DE CONVECŢIE TERMICĂ

ANALYTIC AND EXPERIMENTAL METHOD FOR
DETERMINATION OF CONVECTIVE HEAT
TRANSFER COEFFCIENT
This paper describes how analytic and experimental method for
determining the heat convection coefficient for a cylindrical wall placed
horizontally and warmed on the inside. Analytical method consists in calculating
the criteria of similarity (invariants) describing the phenomenon of thermal
convection, and by experimental method taking into account heat transfer by
free convection and radiation between the wall and the environment.
Cuvinte cheie: convecţie liberă, coeficient de convecţie termică,
criteriu de similitudine, metodă experimentală
Keywords: free convection, convection heat transfer coefficient,
similarity criterion, experimental method

55 METODĂ ANALITICĂ ŞI EXPERIMENTALĂ


24-56 INIŢIEREA/POSTINIŢIEREA UNUI INCENDIU. CONCEPTE CONEXE – partea I-a

INITIATION/COMMENCEMENT OF A FIRE.
RELATED CONCEPTS – part IThe
article shall be issued on the main concepts of specific fire:
initiation and commencement of a fire; related conditions necessary for selfmaintenance
mechanism for initiating/development of a fire; the concept of
fire/fire/burning/combustion-controlled controlled; the concept of uniqueness of
initiation/development of a fire; prevent initiation/development of a fire; the
concept of extinction in case of a fire.
Cuvinte cheie: incendiu, inițiere, post-inițiere, auto-intreținere,
prevenire, stingerea unui incendiu, concepte
Keywords: fire, initiation, after the initiation, maintenance, fire
prevention, extinguish a fire, concepts

56 INIŢIEREA, POSTINIŢIEREA UNUI INCENDIU.


24-57 INIŢIEREA /POSTINIŢIEREA UNUI INCENDIU. CONCEPTE CONEXE – partea a II-a

INITIATION/COMMENCEMENT OF A FIRE.
RELATED CONCEPTS – part II –
The article shall be issued on the main concepts of specific fire:
initiation and commencement of a fire; related conditions necessary for selfmaintenance
mechanism for initiating/development of a fire; the concept of
fire/fire/burning/combustion-controlled controlled; the concept of uniqueness of
initiation/development of a fire; prevent initiation/development of a fire; the
concept of extinction in case of a fire.
Cuvinte cheie: incendiu, inițiere, post-inițiere, auto-intreținere,
prevenire, stingerea unui incendiu, concepte
Keywords: fire, initiation, after the initiation, maintenance, fire
prevention, extinguish a fire, concepts

57 INIŢIEREA , POSTINIŢIEREA UNUI INCENDIU.


24-58 INFLUENŢA TIPULUI ŞI PARAMETRILOR FUNCŢIONALI AI APARATULUI VIBRATOR ASUPRA EVOLUŢIEI EROZIUNII CAVITAȚIEI

INFLUENCE DU TYPE ET DES PARAMÈTRES
FONCTIONNELS DE L’APPAREIL VIBRATOIRE SUR
L’ÉVOLUTION DE L’ÉROSION DE LA CAVITATION
L’ouvrage analyse les différences créées par cavitation produite dans
deux appareils vibratoire avec différents paramètres de fonctionnement. Les
deux appareils, notés par T1 et T2, sont dans le Laboratoire de Cavitation dans
l’U.P. Timisoara. Les recherches effectuées montrent que la profondeur et la
zone de la surface érodée sont dépendantes de la forme et la taille du nuage
de la cavitation, attaché à l’échantillon. Les conclusions montrent que la
profondeur d’érosion est principalement déterminée par l’amplitude des
vibrations et l’expansion de la surface érodée de la fréquence de vibrations.
Cuvinte cheie: eroziunea de cavitaţie, diametru mediu a suprafeţei
erodate, amplitudinea şi frecvenţa de vibraţie, dispozitivul de încercare,
microstructura din oţel inoxidabil
Mots-clés: l’érosion de la cavitation, diamètre moyen de la surface
érodée, l’amplitude et la fréquence des vibrations, l’appareil du test, l’acier
inoxydable, microstructure

58 INFLUENŢA TIPULUI ŞI PARAMETRILOR


24-59 CONSIDERAŢII PRIVIND SOLUŢII MODERNE ÎN PROIECTAREA VANELOR FLUTURE CU DISC BIPLAN

CONSIDERATIONS REGARDING THE DESIGN MODERN
SOLUTIONS OF THE BUTTERFLY VALVES
WITH THE BIPLANE DISK
The present work has the purpose to analyse the modern solutions
regarding the design of the butterfly valves with biplane disk. The work is
divided in two parts:
1. Butterfly valve general assembly.
2. Butterfly valve.
Cuvinte cheie: vană fluture, disc biplan, corp vană, etanşare, soluţii
constructive.
Key words: butterfly valve, biplane disk, valve body, sealing,
constructive solutions.

59 CONSIDERAŢII PRIVIND SOLUŢII MODERNE ÎN PROIECTAREA VANELOR FLUTURE CU DISC BIPLAN


24-60 CONSIDERAŢII PRIVIND STUDIUL PROCESELOR TERMOGAZODINAMICE PRIN METODA STRATULUI LIMITĂ DINAMIC ŞI TERMIC LA ARMELE DE FOC

CONSIDERATION OF THE STUDY BY THE
METHOD LAYER TERMOGAZODINAMICE PROCESSES
LIMIT DYNAMIC AND HEAT SHIELD OF THE FIREARMS
This paper presents a study analytically, by means of dynamic and
thermal boundary layer processes occurring inside termogazodinamice and
muzzle, during firing guns.
Cuvinte cheie: proces termogazodinamic, strat limită dinamic şi
termic, jet de gaze, forţe de vâscozitate
Keywords: termogazodinamic process, dynamic and thermal boundary
layer, jet, force gas viscosity

60 CONSIDERAŢII PRIVIND STUDIUL PROCESELOR


24-61 COMPORTAREA ȘI REZISTENȚA LA CAVITAȚIE A DOUĂ OȚELURI INOXIDABILE CU STRUCTURI BIFAZICE DE AUSTENITĂ ȘI MARTENSITĂ

THE INFLUENCE OF THE TYPE AND FONCTIONAL
PARAMETERS OF THE VIBRATOR APPARAT UPON THE
EVOLUTION CAVITATION EROSION
This paper analyses the behaviour and resistance to cavitation for two
stainless steels with biphasic structures of austenite and martensite, in different
proportions.
The two steels have the similar content of nickel, but different
chromium and carbon. Degradation of the investigated surface is accomplished
by vibratory cavitation, produced in the piezoceramic crystal device T2, located
in Cavitation Laboratory, University Polytechnic Timisoara.
The research results are presented in the form of penetration speeds
erosion, the experimental points and the approximation analytical curves, as
well as the photos for the profile breakings, in a given section The conclusions
show that the steel, with higher carbon content and lower of the chrome, has a
superior strength and the behaviour of the lower carbon content and higher
chromium, although, the latter has a higher proportion of the martensite,
constituent considered with the highest resistance to cavitation.
Cuvinte cheie: eroziunea de cavitaţie, oţel inoxidabil, microstructură,
compoziţie chimică
Keywords: erosion of the cavitation, stainless steel, microstructure,
chemical composition

61 COMPORTAREA ȘI REZISTENȚA LA CAVITAȚIE A DOUĂ OȚELURI INOXIDABILE CU STRUCTURI BIFAZICE DE AUSTENITĂ ȘI MARTENSITĂ


24-62 ASPECTE PRIVIND AERONAVELE FĂRĂ PILOT

ASPECTS OF AIRCRAFT WITHOUT PILOT
The paper presents some aspects regarding the development of
unmanned aircraft (UAV – Unmanned Aerial Vehicle).
Cuvinte cheie: vehicule aeriene fără pilot, dronă aeriană, elicopter
Mini-UAV
Keywords: aircraft without pilot, aerial drone, helicopter Mini-UAV

62 ASPECTE PRIVIND AERONAVELE FĂRĂ PILOT


24-63 SISTEMELE ELECTROENERGETICE DE LA BORDUL AERONAVELOR

GRIDS FROM AIRCRAFT These first papers try to describe the beginning of electrical systems and their development in the aeronautically field. We described the power systems and their parameters, the influence of different perturbations against on-board systems and make consideration about the use of magnetic circuit with permanent magnets based on rare earth in aircraft manufacturing. Cuvinte cheie: sisteme electroenergetice de bord, perturbaţii, magneţi permanenţi, performanțe Keywords: power systems, noise, permanent magnets, performing

63 SISTEMELE ELECTROENERGETICE DE


24-64 APLICAŢII ALE MAGNEŢILOR PERMANENŢI ÎN INDUSTRIE. MAGNETUL PERMANENT. ALEGERE. STABILITATE

APPLICATIONS OF PERMANENT MAGNETS IN THE
INDUSTRY. PERMANENT MAGNET. CHOICE. STABILITY
These second papers try to describe the behaviour of permanent
magnets in front of the influence of different perturbation against them, and few
methods to limitate or eliminate their effect. We’ve talked about magnetic
stability and we tryed to plot the behaviour in time of permanent magnets for
different work temperature.
Cuvinte cheie: magneți permanenți, temperatură de lucru, pământuri
rare, performanțe
Keywords: permanent magnets, working temperature, rare earths,
performing

64 APLICAŢII ALE MAGNEŢILOR PERMANENŢI ÎN INDUSTRIE. MAGNETUL PERMANENT.


24-65 FREZĂ CILINDRO-FRONTALĂ PENTRU PRELUCRAREA ALUMINIULUI ŞI ALIAJELOR DIN ALUMINIU, CU PLĂCUŢE DURE, ASCUŢITE DUPĂ O NOUĂ GEOMETRIE

END-CYLINDRICAL MILLING CUTTER FOR
ALUMINIUM AND ALUMINIUM ALLOYS MACHINING, WITH
HARD TIPS, SHARPENED AFTER A NEW GEOMETRY
It was proposed as technical innovation – technical improvement – an
end-cylindrical milling cutter with a cylindrical handle, two teeth with hard tips,
shaped after a new geometry, for aluminum and aluminum alloys, having: α =
12°, β = 56°, and γ = 22°, 120 mm diameter, in 1962. The milling cutter of this
or modified shape (3 teeth, 200 mm diameter) was used for roughing and
finishing of aluminum and aluminum alloy parts for many years, up to present
paper (50 years). Recommended working regime is of 0.1 mm/tooth advance,
2-10 mm cutting depth, 40 m/s cutting speed. It was used the references
available in 1962, when the proposal for technical innovation was handled, with
the exception of [11, 14] issued latter.
Cuvinte cheie: Freză cilindro-frontală, plăcuţe dure, geometrie nouă
Keywords: End-cylindrical milling cutter, hard tips, new geometry

65 FREZĂ CILINDRO-FRONTALĂ PENTRU PRELUCRAREA ALUMINIULUI ŞI ALIAJELOR DIN ALUMINIU, CU PLĂCUŢE DURE,


24-66 GENERAREA MELCULUI TOROIDAL PENTRU RECTIFICAREA ROŢII ANGRENAJULUI PINION CILINDRIC-ROATĂ FRONTALĂ

GENERATING THE T0ROIDAL WORM FOR GRINDING
THE TEETH OF FACE-GEAR OF FACE-GEAR DRIVE
The paper presents the basic elements of generating through
pro/ENGINEER application of the toroid worm for grinding the face-gear of
face-gear drive.
Cuvinte cheie: melc generator toroidal
Keywords: snail toroid generator

66 GENERAREA MELCULUI TOROIDAL PENTRU RECTIFICAREA ROŢII ANGRENAJULUI PINION CILINDRIC-ROATĂ FRONTALĂ


24-67 GENERAREA PINIONULUI ŞI ROŢII DINŢATE CU DINŢI CURBI KLINGELNBERG-PALLOID PRIN APLICAŢIA Pro/ENGINEER

GENERATING OF THE PINION AND THE WHEEL FOR
KLINGELNBERG-PALLOID DRIVE THROUGH
APPLICATION Pro/ENGINEER
The paper presents the basic elements of generating the pinion and
the wheell for Klingelnberg-Palloid drive
Cuvinte cheie: roată generatoare, aplicația Pro/ENGINEER, pinion
și roată dințată cu dinți curbi
Keywords: wheel generators, software Pro\/ENGINEER, pinion and
gear with curved teeth

67 GENERAREA PINIONULUI ŞI ROŢII DINŢATE


24-68 DETERMINAREA PRAMETRILOR GEOMETRICI LA UN ANGRENAJ MELC-ROATĂ PLANĂ. STUDIU DE CAZ (I)

DETERMINATIONS OF THE GEOMETRICAL PARAMETERS
FOR THE WORM-FACE GEAR DRIVE FOR A CASE STUDY (I)
The paper presents the basic algorithm for determinations of the
geometrical parameters for the worm-face gear drive for a case study
Cuvinte cheie: parametri geometrici, angrenaj melc-roată plană
Keywords: geometrical parameters, gear worm-wheel hover

68 DETERMINAREA PRAMETRILOR GEOMETRICI


24-69 DETERMINAREA PRAMETRILOR GEOMETRICI LA UN ANGRENAJ MELC-ROATĂ PLANĂ. STUDIU DE CAZ (II)

DETERMINATIONS OF THE GEOMETRICAL PARAMETERS
FOR THE WORM-FACE GEAR DRIVE
FOR A CASE STUDY (II)
The paper presents the basic algorithm for determinations of the
geometricall parameters for the worm-face gear drive for a case study
Cuvinte cheie: parametri geometrici, angrenaj melc-roată plană
Keywords: geometrical parameters, gear worm-wheel hover

69 DETERMINAREA PRAMETRILOR GEOMETRICI


24-70 DETERMINAREA PRECIZIEI DE GENERARE A SUPRAFEŢEI ELICOIDALE REALIZATE CU UN DISPOZITIV ATAŞABIL PE MAŞINI-UNELTE DE RECTIFICAT PLAN

THE DETERMINATION OF GENERATING ACCURACY
OF ELICOID SURFACE WITH A DEVICE ATTACHABLE
ON THE PLANE GRINDING MACHINE
The paper presents the basic elements for determination of generating
accuracy of helicoid surface with a device attachable on the plane grinding
machine.
Cuvinte cheie: suprafaţă elicoidală
Keywords: helical surface

70 DETERMINAREA PRECIZIEI DE GENERARE


24-71 CONSIDERAŢII TEORETICE ASUPRA SUPRAFEŢELOR PRINCIPALE LA ANGRENAJELE ORTOGONALE MELC-ROATĂ MELCATĂ (I)

TEORETICAL COSIDERATIONS ABOUT MAIN SURFACES
OF ORTHOGONAL WORM-GEAR DRIVES (I)
The paper presents the basic elements about the geometry of helicall
surfaces of the orthogonal worm- gear drives, after dissertation of Christian
Häner, Ph.D.
Cuvinte cheie: suprafeţe elicoidale
Keywords: helical surfaces

71 CONSIDERAŢII TEORETICE ASUPRA SUPRAFEŢELOR


24-72 CONSIDERAŢII TEORETICE ASUPRA SUPRAFEŢELOR PRINCIPALE LA ANGRENAJELE ORTOGONALE MELC-ROATĂ MELCATĂ (II)

TEORETICAL COSIDERATIONS ABOUT MAIN SURFACES
OF ORTHOGONAL WORM-GEAR DRIVES (II)
The paper presents the basic elements about the geometry of helicall
surfaces of the orthogonal worm- gear drives, after dissertation of Christian
Häner, Ph.D.
Cuvinte cheie: suprafeţe elicoidale
Keywords: helical surfaces

72 CONSIDERAŢII TEORETICE ASUPRA SUPRAFEŢELOR


24-73 CONSIDERAŢII ASUPRA POSIBILITĂŢII DE MANUFACTURARE A FREZELOR MELC CONICE LA S.C. SCULĂRIA SRL CUGIR (I)

CONSIDERATIONS ABOUT POSSIBILITY OF
MANUFACTURE OF CONICAL HOB
AT S.C. SCULĂRIA SRL CUGIR (I)
The paper presents the basic elements about possibility of
manufacture of conical hob at S.C. Sculăria srl Cugir
Cuvinte cheie: freza melc conică
Keywords: snail taper milling

73 CONSIDERAŢII ASUPRA POSIBILITĂŢII DE MANUFACTURARE A FREZLOR MELC CONICE


24-74 CONSIDERAŢII ASUPRA POSIBILITĂŢII DE MANUFACTURARE A FREZLOR MELC CONICE LA S.C. SCULĂRIA SRL CUGIR (II)

CONSIDERATIONS ABOUT POSSIBILITY
OF MANUFACTURE OF CONICAL HOB
AT S.C. SCULĂRIA SRL CUGIR (II)
The paper presents the basic elements about possibility of
manufacture of conical hob at S.C. Sculăria srl Cugir
Cuvinte cheie: freza melc conică
Keywords: snail taper milling

74 CONSIDERAŢII ASUPRA POSIBILITĂŢII DE MANUFACTURARE A FREZLOR MELC CONICE


24-76 ANGRENAJE CU AXE PARALELE AVÂND PROFILURI SPECIALE

GEAR AXIS PARALLEL HAVING SPECIAL PROFILES
Gears with parallel axes with neevolventic’s profile can be used in
industrial watchmaker, and general construction machinery, taking into account
the current technological possibilities in manufacturing gears.
Cuvinte cheie: angrenaj, roată dinţată, transmisii, pinion
Keywords: gear, cogwheel, transmission, pinion

76 ANGRENAJE CU AXE PARALELE AVÂND


24-77 POSIBILITATEA DE UTILIZARE A ANGRENAJELOR CICLOIDALE CU PROFILURLE DINŢILOR TEORETIC EXACTE LA FOCOASE FUZANTE CU MECANISM DE CEASORNIC (I)

THE UTILISATION POSSIBILITY OF CYCLOIDAL GEARING
WITH THEORETICAL EXACT TOOTHING PROFILEES FOR
FUSE WITH WATCH MECHANISM
The paper presents the utilisation possibility of cycloidal gearing with
theoretical exact too thing profiles for fuse with watch mechanism.
Cuvinte cheie: dantură cicloidală
Keywords: gear cicloidala

77 POSIBILITATEA DE UTILIZARE A ANGRENAJELOR CICLOIDALE CU PROFILURLE DINŢILOR TEORETIC EXACTE LA FOCOASE FUZANTE CU MECANISM DE CEASORNIC (I)


24-78 POSIBILITATEA DE UTILIZARE A ANGRENAJELOR CICLOIDALE CU PROFILURLE DINŢILOR TEORETIC EXACTE LA FOCOASE FUZANTE CU MECANISM DE CEASORNIC (II)

THE UTILISATION POSSIBILITY OF CYCLOIDAL GEARING
WITH THEORETICAL EXACT TOOTHING PROFILEES FOR
FUSE WITH WATCH MECHANISM
The paper presents the utilisation posibility of cycloidal gearing with
theoretical exact toothing profiles for fuse with watch mechanism.
Cuvinte cheie: dantură cicloidală
Keywords: gear cicloidala

78 POSIBILITATEA DE UTILIZARE A ANGRENAJELOR CICLOIDALE CU PROFILURLE DINŢILOR TEORETIC EXACTE LA FOCOASE FUZANTE CU MECANISM DE CEASORNIC (II)


24-79 EINIGE FRAGEN BEZÜGLICH DES ELEKTRISCHEN WIDERSTANDS VON THERMOELEMENTEN

UNELE PROBLEME PRIVIND REZISTENŢA ELECTRICĂ
A TERMOCUPLURILOR
La măsurarea temperaturii cu termocupluri apare o variaţie nedorită a
rezistenţei electrice a acestora în funcţie de lungimea de introducere în mediul
de măsurare şi de temperatura medie a lor. În cadrul acestei comunicări se
tratează determinarea prin măsurare şi prin calcul a rezistenţei electrice a
termocuplurilor aflate în exploatare, cu prezentarea diagramelor aferente şi a
unor exemple pentru termocuplul PtRh-Pt.
Bei Temperaturmessungen mit Thermoelementen tritt eine unerwünschte
Änderung des elektrischen Widerstandes der Thermopaare ein, abhängig
von der Länge ihres Einbaus und von ihrer mittlerer Temperatur. Innerhalb
dieses Aufsatzes wird die Bestimmung durch Messen oder durch Rechnen des
elektrischen Widerstands von in Betrieb befindlichen Thermoelementen,
behandelt. Gleichzeitig wurden Diagramme entwickelt in diesem Sinn, mit
konkreten Beispiele für ein PtRh-Pt Thermoelement.
Cuvinte cheie: termocupluri în exploatare, rezistenţa electrică
Schlüsselwörter: Thermoelementen in Betrieb, elektrische Widerstand

79 EINIGE FRAGEN BEZÜGLICH DES ELEKTRISCHEN WIDERSTANDS VON THERMOELEMENTEN


24-80 COMPARATIVE STUDY OF THE DEFORMATION STATE FOR THE OPTIMIZED DESIGN SPHERE-CYLINDER SHELL GRP UNDER INTERNAL PRESSURE

STUDIU COMPARATIV AL STĂRII DE DEFORMAȚII PENTRU
DESIGNUL ÎNVELITORII SFERĂ-CILINDRU GRP SUB
PRESIUNE INTERNĂ
Acest articol prezintă un studiu relativ la deplasarea totală a unei
învelitori cilindru-sferă GRP de grosime constantă supusă unei presiuni interne,
comparativ cu deplasarea totală pentru opt profile optimizate ale aceluiași tip
de învelitoare supusă la aceeași presiune internă. Concluzia este că
deplasarea totală este mică pentru învelitoarea optimizată prin metoda propusă
de autoare [4], pentru valoare minimă a tensiunii echivalente von Mises
semnalată la analiza stării de tensiuni, deplasarea totală δ*max cylinder =
0,673 mm reprezentând aproximativ jumătate din valoarea deplasării totale
pentru învelitoarea neoptimizată δ i
maxcylinder = 1,244 mm.
This article presents a study relative to the total displacement of a
cylinder-sphere covers GRP constant thickness subjected to internal pressure, as
compared to the total displacement profiles optimized for eight of the same type of
parcel subject to the same internal pressure. The conclusion is that the total
displacement is small for optimized by method of covering proposed by author [4],
for the minimum value of the voltage equivalent to von Mises condition analysis of
reported tensions, the total displacement δ*max cylinder = 0.673 mm representing about
half of the total displacement no optimization δ imaxcylinder = covering 1.244 mm.
Cuvinte cheie: deplasare totală, învelitoare cilindru-sferă, GRP, profil
optimizat
Keywords: total displacement, covers the cylinder, the sphere, GRP,
optimized profile

80 COMPARATIVE STUDY OF THE DEFORMATION STATE FOR THE OPTIMIZED DESIGN SPHERE-CYLINDER SHELL GRP UNDER INTERNAL PRESSURE


24-81 OPTIMIZATION IN THE ELASTIC LINEAR FIELD OF THIN SHELL CYLINDER-SPHERE GRP UNDER SMALL INTERNAL CONSTANT AND UNIFORM PRESSURE

OPTIMIZAREA ÎN CÂMP ELASTIC LINIAR A UNEI ÎNVELITORI
CILINDRU-SFERĂ GRP SUPUSĂ UNEI PRESIUNI INTERNE
CONSTANTE ŞI UNIFORME
Articolul prezintă un studiu cu privire la optimizarea unui profil de
învelitoare cilindru-sferă GRP (Glass Reinforsed Plastic), calculată în domeniul
elastic linear pentru o valoare mică de presiune constantă și uniformă. Se
prezintă rezultatele cercetărilor făcute de J.Leach [4] pentru câteva profile de
învelitoare, relativ la starea de tensiuni și deformaţii utilizând programul
BOSOR [4] bazat pe metoda diferenţelor finite. În continuare se prezintă
rezultatele cercetărilor făcute de autoare relativ la trei învelitori cilindru-sferă,
optimizate prin impunerea a trei tensiuni echivalente von Mises constante pe
întreaga învelitoare, utilizând metoda propusă de autoare [2] care are la bază
ecuaţiile de echilibru ale teoriei clasice în domeniul elastic linear. Analiza stării
de tensiuni și deformatii este realizată cu ajutorul analizei FEM utilizând
programul NASTRAN V4.0 [5], pentru cele trei situaţii de optimizare ale
învelitorii cilindru-sferă prin programul OPTIMISES [3] rezultate prin impunerea
a trei tensiuni echivalente von Mises σVme = 5 MPa, σVme = 9,007 MPa,
respectiv σVMe = 17,96 MPa.
La sfârșit se face o analiză cuprinzând rezultatele opţinute relativ la
tensiunile circumferenţiale, echivalente von Mises, și relativ la deplasarea
totală, pentru profilele optimizate, evidenţiind rezultatele obţinute prin metoda
propusă de Dora Florea [3].
The article presents a study about optimizing a parcel profile cylindersphere
GRP (Glass Reinforsed Plastic), calculated in linear elastic for a small
value constant and uniform pressure.
579
Cuvinte cheie: optimizare, design, tensiune echivalentă von Mises,
deplasare totală, GRP
Keywords: optimization, design, santers von Mises, total displacement,
GRP

81 OPTIMIZATION IN THE ELASTIC LINEAR FIELD OF THIN SHELL CYLINDER-SPHERE GRP UNDER SMALL INTERNAL CONSTANT AND UNIFORM PRESSURE