Arhivă Revista

28-65 ENERGIA ȘI MEDIUL – DIN PERSPECTIVA STANDARDIZĂRII EUROPENE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Mircea MARTIŞ la de

ENERGY AND ENVIRONMENT – EUROPEAN STANDARDIZATION PERSPECTIVE Energy and environmental policies are interlinked with energy production and environmental impact. Standardization plays an important role in efforts to protect the environment and promote sustainable development. This is because standards directly relate to the design of products and processes. The standards define acceptable levels of energy use, waste management procedures and other measures to protect the environment. The developments of standards, technical committees (TC) are needed to ensure that the impact of products, services and processes on the environment are taken into account at every stage of its lifecycle. The key objective of the „CEN approach to the environmental aspects of products and services to standards” is to implement a framework to promote and ensure better inclusion of these issues in European standards. EU environmental legislation and agenda of the European Commission (EC) on resource efficiency are directed to ensure that EU policies take full advantage of all the potential to reduce the risks and impact of energy consumption. This will bring direct and indirect improvements on health and the environment, reduce imports and will enable the EU to better compete internationally in a world of limited resources.

Keywords: energy, limited resources, environmental policy, standardization, environmental law EU agenda European Commission (EC)

Cuvinte cheie: energia, resurse limitate, politici de mediu, standardizarea, legislația de mediu a UE, agenda Comisiei Europene (CE)

Descarcare text

28-63 OPTIMIZAREA FABRICAȚIEI PĂRȚILOR ACTIVE ȘI ELEMENTELOR DE GHIDARE ALE ȘTANȚELOR ȘI MATRIȚELOR

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Răzvan Silviu AVRAM Silviu-Dan AVRAM Tiberiu Ștefan MĂNESCU la de

OPTIMIZING PRODUCTION WORK AND GUIDING
ELEMENTS OF DIES AND MOLDS
This paper analyses the behaviour of the active parts and guidance elements of dies and moulds in the complex production process.
Analysis concerns the duration of use, number of uses without regrinding in different lubrications conditions.
Keywords: punching moulds, active part, guiding elements, number of uses
Cuvinte cheie: ștanțe-matrițe, părți active, elemente ghidare, număr de utilizări

Descarcare text

28-62 PRELUCRAREA SUPRAFEŢELOR CURBE COMPLEXE, PRIN UTILIZAREA FREZELOR CU CAP SFERIC

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Dorin SCÂNTEIE la de

MACHINING COMPLEX CURVED SURFACES, USING SPHERICAL HEAD MILLS
The complexity of a piece configuration is determined by its functional role, mechanical loading system, operating conditions. Surfaces defining a piece in space can be expressed by means of parametric equations. A surface profile can be completely defined if that surface intersects two planes perpendicular to each other. Surface intersection curves resulting data with those plans have as expressions, analytical equations. Machining end mills with spherical head is a very complex process, due primarily blade arrangement on a spherical surface. The solution for successful machining of complex curved surfaces is to use mills with spherical head.
Keywords: parametric equations, analytical equations, end mills spherical head – CAD modelling 3D graphics
Cuvinte cheie: ecuații parametrice, ecuaţii analitice, freze cilindro-frontale cu cap sferic, modelare grafică 3D-CAD

Descarcare text

28-61 STUDII ŞI CERCETĂRI PRIVIND ELEMENTELE FILTRANTE SINTERIZATE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Andras Julien CANDOI Elena Maria PICĂ Ioan VIDA-SIMITI la de

STUDIES AND RESEARCH ON SINTERED
FILTER ELEMENTS
This paper presents methods for obtaining and using filter elements, purpose to identifying the best technologies for obtaining and using filter elements, in terms of investment and operating costs specific to various industrial clusters and their use in the purification water. The paper purpose to analyse the current state of research in this area, national, European, and international, trying to find similarities between of the same socio-economic environments in Romania, Europe and/or internationally and to supplement it with new information, specific technologies of obtaining materials sintered filter.
Keywords: filter elements, sintered filter elements, methods of analysis, applications
Cuvinte cheie: elemente filtrante, elemente filtrante sinterizate, metode de analiză, aplicaţii

Descarcare text

28-60 CERCETĂRI PRIVIND CALITATEA ÎMBINĂRILOR SUDATE DIN OȚEL TERMOREZISTENT

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Cornelia Victoria ANGHEL DRUGĂRIN Cristian Marius MIMIS Iuliana Magdalena VIZITIU Lenuţa CÎNDEA la de

RESEARCH OF WELDED JOINTS HEAT-RESISTANT STEEL
Alloy and not alloy steels, with specified elevated temperature shall be prepared in accordance with SR EN 10216 – 2 + A2 – 2008 Standard. Structural examinations and mechanical tests performed on weld heat-resistant steels have shown the possibility of establishing, with some degree of certainty, the correlations between the type of microstructure and mechanical characteristics.
Solid solution hardening due to the presence of dislocations, the precipitating and foreign atoms from the network, represent a very important element to be taken into account in determining the structural and mechanical properties of heat-resistant alloy and not alloy steels wieldable.
Keywords: heat resistant steel, welded joint quality, mechanical stress, creep, ductility
Cuvinte cheie: oțel termorezistent, calitatea îmbinării sudate, solicitări mecanice, fluaj, ductibilitate

Descarcare text

28-59 INFLUENŢA SPUMELOR ACTIVE ASUPRA UNOR STRATURI METALICE DE ACOPERIRE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Camelia FĂRCAŞ Dan GUIA George ARGHIR la de

INFLUENCE ON ACTIVE FOAM LAYERS OF METAL
This paper aims to achieve a bibliographical study and practical research on technologies for coating metal layers, especially nickel-based alloys and their use in automotive and foams active influence on them in the wash. It was found that with the wear caused by aging and external factors, including repeated washing, auto parts nickel, shows a frosting, that glossy look is diminished, so is looking for a foam manufacturing assets that do not affect the optimal structure of material basis of their physical properties.
Keywords: active foam, nickel plated parts, metal coating
Cuvinte cheie: spumă activă, piese nichelate, straturi de acoperire

Descarcare text

28-58 ASPECTE PRIVIND OBŢINEREA MATERIALELOR POROASE ARMATE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Gabriel BATIN George ARGHIR Liviu BRÂNDUŞAN la de

ASPECTS OF REINFORCED POROUS MATERIALS OBTAINING
The sintered materials of metal powders have low mechanical properties, which is why a reinforced process can improve these properties. The reinforcement is made of steel webs with square cell and particle size distribution of the powder deposited on these elements must be within the network parameter data. The materials obtained by sintering at 800 0C for 30 minutes in a hydrogen atmosphere have a uniform structure with a good pores distribution. The metal network influences the development of breakage and increases the tensile strength.
Key words: porous materials, powders, powder metallurgy
Cuvinte cheie: materiale poroase, pulberi, metalurgia pulberilor

Descarcare text

28-57 CERCETĂRI PRIVIND REALIZAREA UNOR PLĂCUŢE DIN OXID DE ZIRCONIU PENTRU AŞCHIEREA METALELOR

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Achim MUNTEAN Marinela INŢĂ la de

RESEARCHES ON THE IMPLEMENTATION OF ZIRCONIUM OXIDE INSERTS FOR CUTTING METALS
The paper attempts to demonstrate superior performance of cutting inserts made of zirconia, a ceramic material superior aluminum oxide used more as a structural material in dentistry for dental prosthetics works. Also it intends to recycle the unused blank zirconia to obtain a cost reduction of dental prosthetics works.
Keywords: process of cutting, tool wear, zirconia, dental work
Cuvinte cheie: proces de aşchiere, uzura sculei, zirconia, lucrări dentare

Descarcare text

28-56 CERCETARE PILOT PENTRU PRODUCEREA CONTACTELOR ELECTRICE PENTRU CURENŢI INTENŞI PRIN METALURGIA PULBERILOR

Această intrare a fost publicată în 2015 Volumul 28 și etichetată George ARGHIR Liviu BRÂNDUŞAN la de

PILOT RESERARCH FOR PRODUCTION OF
ELECTRICAL CONTACTS FOR STRONG CURRENTS
BY POWDER METALLURGY
There were experienced three pilot versions for electrical contacts for strong currents, W – Cu, by powder metallurgy. Based on these it was selected the following variant: Cu matrix composite reinforced with W, starting from the powder: W – 50.18 mass %, Ni – 1.02 %, Cu 48.06 %, and 0.74 % zinc stearate. 8 GPa pressed, sintered at 875 °C for 15 minutes, then infiltrated with Cu to fill the pores, resulting in a product that has a density of 11.738 kg/m3, similar to the theoretical density. It is noted that often remain additions of no infiltrated Cu and sometimes may appear craters in place of infiltration. It is preferred the version with as little as possible infiltrated Cu.
Keywords: sintered electrical contacts, W-Cu
Cuvinte cheie: contacte electrice sinterizate, W-Cu

Descarcare text

28-55 CERCETĂRI PRIVIND OBȚINEREA FERITEI DE ZINC ÎN STARE NANOCRISTALINĂ/NANOMETRICĂ FOLOSIND METODA CERAMICĂ ȘI MĂCINARE MECANICĂ (II)

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Alina MOLDOVAN Elena-Simina LAKATOS la de

RESEARCH REGARDING OBTAINING ZINC FERRITE IN NANOCRYSTALLINE/NANOMETRIC STATUS USING THE CERAMIC METHOD AND MECHANICAL MILLING (II)
This paper presents a research regarding the procedure of obtaining the zinc ferrite in nanocristalline/nanometer state throw the standard procedure as ceramic method and then applying the mechanical milling. As a start material we use zinc ferrite. We apply the ceramic method and then we mill the material in two types of environment (dry and with solution). For analysing the results we use SEM, DSC and X-ray diffraction. In the end we obtain zinc ferrite in nano crystalline and nonometer status.
Keywords: nanocrystalline, nanometric, zinc ferrite, SEM, DSC, EDX
Cuvinte cheie: nanocristalin, nanometric, ferita de zinc, SEM, DSC, EDX

Descarcare text

28-54 CERCETĂRI PRIVIND OBȚINEREA FERITEI DE ZINC ÎN STARE NANOCRISTALINĂ/NANOMETRICĂ FOLOSIND METODA CERAMICĂ ȘI MĂCINARE MECANICĂ (I)

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Alina MOLDOVAN Elena-Simina LAKATOS la de

RESEARCH REGARDING OBTAINING ZINC FERRITE IN NANOCRYSTALLINE/NANOMETRIC STATUS USING THE CERAMIC METHOD AND MECHANICAL MILLING
This paper present a research regarding the procedure of obtaining the zinc ferrite in nanocristalline/nanometer state throw the standard procedure-ceramic method (first step) and after applying the mechanical milling (second step). As a start material we use zinc ferrite. We apply the ceramic method and then we mill the material in two types of environment (dry and with solution). For analysing the results we use SEM, DSC and X-ray diffraction. In the end we obtain zinc ferrite in nanocrystalline and nonometer status.
Keywords: nanocrystalline, nanometric, zinc ferrite, SEM, DSC, EDX
Cuvinte cheie: nanocristalin, nanometric, ferita de zinc, SEM, DSC, EDX

Descarcare text

28-53 ASPECTE EXPERIMENTALE PRIVIND ANALIZA SUPRAFEŢELOR METALICE CU AJUTORUL SPECTROSCOPIEI DE FOTOELECTRONI XPS

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Mihaela FLORI la de

EXPERIMETAL ISSUES REGARDING METALLIC SURFACES ANALYIS BY XPS PHOTOELECTRON SPECTROSCOPY
In this paper is described the experimental setup used for X-ray Photoelectron Spectroscopy (XPS) analysis of metallic surfaces. Also, references are made to analysis technique details and obtained results (i.e. photoelectron spectra).
Keywords: XPS photoelectron spectroscopy, spectrum, X-Ray source
Cuvinte cheie: spectroscopie de fotoelectroni XPS, spectru, sursă de raze X.

Descarcare text

28-52 CARACTERIZAREA LIANTULUI FOLOSIT PENTRU FORMAREA PRIN INJECŢIE A MATERIALELOR COMPOZITE CU MATRICE DIN ALUMINIU ŞI PARTICULE DE CARBURĂ DE SILICIU ŞI GRAFIT

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Alina Georgeta JUMOLEA George ARGHIR Liviu BRÂNDUŞAN la de

CHARACTERIZATION OF BINDER UTILIZED FOR INJECTION MOLDING OF ALUMINIUM MATRIX COMPOSITE WITH GRAPHITE AND SILICON CARBIDE PARTICLES
Powder Injection moulding is considered a novel technique for the manufacture of complex shape samples of ceramic or metal powders. It consists in: powder mixing with a binder, injection into a form; binder removal, and sintering. Injection moulding technology is characterized by high stability and productivity. It makes possible to use uncomplicated and inexpensive equipment. The most important for a binding agent is to be thin to reduce the force of attraction between solid particles of different sizes in order to reduce the viscosity. By adding a small quantity of binder it should provide a good formation of the mixture, ready for separation of the preform to retain the shape and strength of injection moulded sample. The sample is quickly removed and does not contaminate the carbon material contained in waste, or other products.
Keyword: binder, injection moulding, sintering, preform
Cuvinte cheie: liant, formare prin injecţie, sinterizare, preformă

Descarcare text

28-51 ANALIZA PROCESĂRII MATERIALELOR PRIN TURNARE ÎN CONTEXTUL DEZVOLTĂRII NOILOR PROCEDEE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Andrei NAGY Emil NAGY la de

ANALYSIS OF MATERIALS PROCESSING BY CASTING
IN THE DEVELOPMENT OF NEW PROCEDURES
In present casting have gained a significant position in the engineering arena and is one of the most important domain in manufacturing. Achieving casting usually require a greater complexity to the design and material processing to ensure a structural integrity. These include a complex system in which the processing conditions are crucial and require an appropriate design of material grades used.
The technologies used in the processing of materials by casting are characterized by mostly by a sinuous, complicated, sometimes technological consideration during raw material to finished product. 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. 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.
Keywords: casting materials processing, technological development, new procedures
Cuvinte cheie: turnare prelucrare materiale, dezvoltare tehnologică, noi proceduri

Descarcare text 

28-50 DISPOZITIV DE ÎNTRERUPERE INSTANTANAEE A AŞCHIERII PRIN STRUNJIRE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Mariana IVINIŞ la de

A CUTTING INSTANTANAEE SWITCHING
DEVICE BY TURNING
Study the conditions that must occur in a process of cutting given realization of all aspects and economic conditions will be listed as follows: achieve adequate productivity, meaning that a certain amount of chips per unit time; minimum cost, including the calculation elements involved in the cutting process; provide optimum surface roughness that is processed; machined surface hardening; structural changes that alter the functionality of that surface.
Keywords: turning, device, cutting metals, materials
Cuvinte cheie: strunjire, dispozitiv, aşchierea metalelor, materiale

Descarcare text

28-49 DISPOZITIV DE RECTIFICARE A SUPRAFEŢELOR ELICOIDALE LA SCULE ASCHIETOARE ATAȘABIL PE MAȘINI DE RECTIFICAT PLAN

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Alexandru MICACIU Ioan VUŞCAN la de

GRINDING DEVICE OF HELICALLY SURFACES
TO CUTTING TOOLS, ATTACHED TO FLAT
GRNDING MACHINES
This paper presents the operating principle of a device for grinding
helical surfaces on the rake face of the cutting tools, adaptable on the flat
grinding machines. Also this paper presents formula adjustment device shown.
Keywords: helical movement adjustment formula
Cuvinte cheie: mişcare elicoidală, formulă de reglare

Descarcare text

28-48 OPORTUNITATEA VIZUALIZĂRII FORMĂRII CONTROLATE A DOPULUI DE GHEAŢĂ PE UN TRONSON DE CONDUCTĂ ORIZONTALĂ

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Bogdan CORBESCU Dumitru PUIU Tiberiu GYONGYOŞI Valeriu Nicolae PANAITESCU la de

THE CONVENIECE OF VISUALISING THE CONTROLLED FORMATION OF ICE PLUGS IN HORIZONTAL PIPE-LINE SECTION
The technique of forming controlled ice plugs in pipe-line installations in order to isolate a section from the rest of the circuit is used for carrying out circuit maintenance or repair activities without shutting down the entire installation. The geometrical characteristics of the ice plug can vary from one test to another, depending on the conditions under which the test is being carried out and the events that occur during this time. Studying this process requires visualizing the forming of ice layers inside the pipe.
This paper describes the convenience of visualizing the formation of ice plugs by studying the effect of the events and interventions that occur during controlled tests that have been carried out in horizontal pipe-line sections.
Key words: isolating a pipe-line section, visualizing the forming of ice layers
Cuvinte cheie: izolarea unui tronson de conductă, vizualizarea depunerii de gheaţă

Descarcare text

28-47 ECHIPAMENT MOBIL CU ACŢIONARE HIDRAULICĂ PENTRU BLOCAREA CĂILOR DE ACCES PARTEA a II-a INSTALAŢIA HIDRAULICĂ DE ACŢIONARE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Corneliu CRISTESCU Genoveva VRÎNCEANU Ioan LEPĂDATU Ioana ILIE Ionel PAVEL Liliana DUMITRESCU Radu RĂDOI la de

MOBILE EQUIPMENT WITH HYDRAULIC DRIVING FOR
BLOCKING ACCESS ROADS.
PART II – HYDRAULIC DRIVING SYSTEM
The paper presents mobile equipment with hydraulic drive for blocking of the streets with access prohibited areas. In the paper, is shows the structural component of equipment, the technical characteristics and, also, its usefulness in airside control actions of the Romanian Gendarmerie in its missions.
Keywords: lock equipment, mobile equipment, hydraulic, hydro -mechanical equipment
Cuvinte cheie: echipament de blocare, echipament mobil, acţionare hidraulică, echipament hidro-mecanic

Descarcare text

28-46 ECHIPAMENT MOBIL CU ACŢIONARE HIDRAULICĂ PENTRU BLOCAREA CĂILOR DE ACCES PARTEA I – CONCEPŢIA GENERALĂ A ECHIPAMENTULUI

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Corneliu CRISTESCU Genoveva VRÎNCEANU Ioan LEPĂDATU Ioana ILIE Ionel PAVEL Liliana DUMITRESCU Radu RĂDOI la de

MOBILE EQUIPMENT WITH HYDRAULIC DRIVING
FOR BLOCKING ACCESS ROADS.
PART I–GENERAL CONCEPTION
The paper presents mobile equipment with hydraulic drive for blocking of the streets with access prohibited areas. In the paper, is shows the structural component of equipment, the technical characteristics and, also, its usefulness in airside control actions of the Romanian Gendarmerie in its missions.
Keywords: lock equipment, mobile equipment, hydraulic, hydro -mechanical equipment
Cuvinte cheie: echipament de blocare, echipament mobil, acţionare hidraulică, echipament hidro-mecanic

Descarcare text

28-45 SISTEM ROBOTIZAT DE TIP EXOSCHELET DESTINAT RECUPERĂRII MEMBRULUI SUPERIOR

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Adrian ABRUDEAN Alexandru IANOŞI-ANDREEVA-DIMITROVA Beniamin CHETRAN Dan MÂNDRU Olimpiu TĂTAR Simona NOVEANU la de

ROBOTIC EXOSKELETON FOR UPPER LIMB REHABILITATION
Based on upper limb structure and its model – presented in the first part of the paper – o short overview on rehabilitation robotic wearable exoskeletons is given and the developed systems are analysed: a two degree-of-freedom (DOF) shoulder – elbow exoskeleton and a six DOF shoulder–elbow–wrist exoskeleton.
Keywords: exoskeleton , upper limb , recovery
Cuvinte cheie: exoschelet, membru superior, recuperare

Descarcare text

28-44 TESTAREA ECHIPAMENTELOR SPECIFICE TEHNOLOGIEI DE ASISTARE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Adrian ABRUDEAN Alexandru IANOŞI-ANDREEVA-DIMITROVA Dan MÂNDRU la de

TESTING ASSISTIVE TECHNOLOGY SPECIFIC EQUIPMENT
This paper gives a short presentation of Assistive Technology – which helps and supports the functional capacity of the human being – and most important tests faced by equipment used in this field. For a mobility aid (a Rollator) all specific tests are detalied emphasized.
Keywords: assistive technology, testing, unrolled
Cuvinte cheie: tehnologie asistivă, testare, rolator

Descarcare text

28-43 PROIECTAREA SOFTWARE A UNEI INSTALAŢII ELECTRICE INDUSTRIALE CU PANOURI FOTOVOLTAICE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Cornelia Victoria ANGHEL DRUGĂRIN Lenuţa CÎNDEA la de

SOFTWARE DESIGN OF AN INDUSTRIAL ELECTRICAL INSTALLATION, USING PHOTOVOLTAIC SYSTEM
In present article we describe, the design of industrial buildings supply electrical installation, using RETScreen International software, version 4.0. We choose location and enter design initial data. Through the steps of design, we establish the number of solar panels, needed to be mounted industrial hall.
Keywords: design, power supply, photovoltaic panels, RETScreen International version 4.0
Cuvinte cheie: proiectare, alimentare cu energie electrică, panouri fotovoltaice, RetScreen International versiunea 4.0

Descarcare text

28-42 SURSE REGENERABILE DE ENERGIE DE NATURĂ ORGANICĂ – ASPECTE DE STANDARDIZARE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Daniela ISĂCESCU la de

RENEWABLE ENERGY SOURCES OF ORGANIC NATURE – ASPECTS OF STANDARDIZATION
The use of renewable energy sources together with energy efficiency improvements can help to reduce energy consumption, greenhouse gas emissions and, consequently, to prevent dangerous climate change. This document presents aspects of standardization regarding renewable energy sources of organic nature.
Keywords: renewable sources, biomass, biogas, biofuels
Cuvinte cheie: surse regenerabile, biomasă, biogaz, biocombustibili

Descarcare text

28-41 REZULTATE PRIVIND MONITORIZAREA RISCURILOR ÎN ZONA TRANSFRONTALIERĂ ROMANIA-BULGARIA. Partea a II-a

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Constantin ŞULEA Gheorghe MANOLEA Laurenţiu ALBOTEANU la de

MONITORING RESULTS RISK AREA
ROMANIA-BULGARIA CROSS-BORDER. PART II
In the period 2011-2014 was developed the cross-border project RO-BG MIS ETC 166 ”Joint Risk Monitoring during Emergencies in the Danube Area Border ”.The objectives were:1. Conceiving and realization of photovoltaic system for anti-hail units power supply system.2. Conceiving and realization of automatic control system for the rockets launch ramp.3. Conceiving and realization the monitoring system of information necessary for the efficient operation of the equipment’s part of antihelix units. Some of the equipment will be taken in mass production by SC Electromecanica Ploiesti, authorized for the production of the assemblies to the national antihelix system.
Keywords: risk, monitoring, cross border, hail
Cuvinte cheie: risc, monitorizare, transfrontalier, grindină

Descarcare text

28-40 REZULTATE PRIVIND MONITORIZAREA RISCURILOR IN ZONA TRANSFRONTALIERĂ ROMANIA-BULGARIA. Partea I-a

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Constantin ŞULEA Gheorghe MANOLEA Laurenţiu ALBOTEANU la de

MONITORING RESULTS RISK AREA
ROMANIA-BULGARIA CROSS-BORDER. PART I
In the period 2011-2014 was developed the cross-border project RO-BG MIS ETC 166 ”Joint Risk Monitoring during Emergencies in the Danube Area Border ”.The objectives were:1. Conceiving and realization of photovoltaic system for anti-hail units power supply system.2. Conceiving and realization of automatic control system for the rockets launch ramp.3. Conceiving and realization the monitoring system of information necessary for the efficient operation of the equipment’s part of antihelix units. Some of the equipment will be taken in mass production by SC Electromecanica Ploiesti, authorized for the production of the assemblies to the national antihelix system.
Keywords: risk, monitoring, cross border, hail
Cuvinte cheie: risc, monitorizare, transfrontalier, grindină

Descarcare text

28-39 MECANISM CENTRIFUGAL DE PROTECȚIE LA SUPRATURARE A ROTORULUI DE TURBINĂ EOLIANĂ

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Rodica BĂDĂRĂU Teodor MILOŞ la de

PROTECTION CENTRIFUGAL MECHANISM OF
THE WIND TURBINE ROTOR AT OVERSPEED
The protection centrifugal mechanism at overspeed described in this paper is designed and made for a wind aggregate of 5 kW. This mechanism is a complex system, designed as an automatic mechanical system to react without electronic control. Only the returning to the initial state is controlled by the electronic system of automatic control of the wind turbine. The triggering of the centrifugal mechanism must be followed by the locking in its extreme position of the rotation of the blades. After locking, the speed is reduced to 20 … 30 rpm then, if weather conditions allow, it gives the command to unlock the centrifugal mechanism so the mechanism returns back to the normal working position.
Keywords: wind turbine, protection centrifugal mechanism at over speed, locking-unlocking device
Cuvinte cheie: turbină eoliană, mecanism de protecţie la supraturare, dispozitiv de blocare-deblocare

Descarcare text

28-38 STAND PENTRU TESTAREA MECANISMULUI CENTRIFUGAL DE PROTECȚIE LA SUPRATURARE A UNUI ROTOR DE TURBINĂ EOLIANĂ DE 5 kW

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Rodica BĂDĂRĂU Teodor MILOŞ la de

STAND FOR TESTING THE OVERSPEED PROTECTION CENTRIFUGAL MECHANISM OF A 5 KW
WIND TURBINE ROTOR
The testing stand is designed to check the rotor protection complex system of a wind aggregate of 5 kW at over speed. The planned complex system is designed as an automatic mechanical system to react without electronic control. Only the returning to the initial state is controlled by the electronic system of automatic control of the wind turbine. The stand checks triggering centrifugal mechanism when is achieved the maximum rotation speed initially prescribed. The triggering of the centrifugal mechanism must be followed by the locking in its extreme position of the rotation of the blades. After locking, the centrifugal speed is reduced to 20 … 30 rpm then, if weather conditions allow, it gives the command to unlock the centrifugal mechanism. An electric motor drives a cam which raises the locking pin so that the centrifugal mechanism returns back to the normal working position. The adjusting of the centrifugal counterweight of the centrifugal mechanism and the impeccable operation of the whole automatic system should be checked on the testing stand. The purposes of the tests are to adjust, check and improve the endurance of the mechanism.
Keywords: wind turbine, testing stand, protection mechanism at overspeed, locking-unlocking device
Cuvinte cheie: turbină eoliană, stand de probă, mecanism de protecţie la supraturare, dispozitiv de blocare-deblocare

Descarcare text

28-37 SISTEM DE CONVERSIE CU TURAŢIE VARIABILĂ A ENERGIEI EOLIENE ŞI HIDRAULICE UTILIZÂND GENERATORUL ELECTRIC ASINCRON CU DOUĂ ÎNFĂŞURĂRI STATORICE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Carmen MOTORGA Lucian Nicolae TUTELEA Maria NĂSĂUDEAN Sorin Ioan DEACONU la de

WIND AND HYDRO VARIABLE SPEED ENERGY CONVERSION SYSTEM WITH DUAL STATOR WINDING INDUCTION GENERATOR
Induction generator with dual stator winding is very good for low power and speed, wind and hydro power plant systems, because it has a good controllability, low reactive power consumption, low cost and flexible characteristics. In this paper is presented an variable speed energy conversion system with this type of generator.
Keywords: induction generator stator windings, low power and speed, wind and hydraulic active rectifier, diode bridge
Cuvinte cheie: generator electric asincron două înfăşurări statorice, putere şi turaţie reduse, energie eoliană şi hidraulică, redresor activ, punte cu diode

Descarcare text

28-36 CONSIDERAȚII PRIVIND PROGNOZA CONSUMULUI DE GAZE PRIN EXTRAPOLARE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Elena NICOLAEV Valeriu Nicolae PANAITESCU la de

CONSIDERATIONS ON PROGNOSIS GAS
CONSUMPTION BY EXTRAPOLATION
It is known that forecasts have a decisive contribution in the process of establishing long-term development strategies. This is happening, because in developing a strategy, we have to explore the future. This challenge becomes more important because of the accelerated pace of technical progress that has an essential role. The strategy for gas consumption should be preceded by developing predictions as accurate in time.
Keywords: energy, energy security, prognosis, mathematical modeling, extrapolation, natural gas consumption
Cuvinte cheie: energie, securitatea energetică, prognoză, modelare matematică, extrapolare, consumul de gaze naturale

Descarcare text

28-35 ELEMENTE PRIVIND CONCEPŢIA ŞI PROIECTAREA UNUI PROTOTIP DE MINIROBOT ŞENILAT – “ROBO GRIPES” – CU ACŢIONARE ELECTRICĂ OBŢINUTĂ PRIN CAPTARE DE ENERGIE SOLARĂ

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Cosmin Iulian GRIGORAŞ Silviu Mihai PETRIŞOR la de

ELEMENTS ON THE CONCEPT AND DESIGN OF A TRACKED MINI ROBOT PROTOTYPE – “ROBO GRIPES” –
WITH ELECTRIC ACTIONING OBTAINED FROM SOLAR ENERGY CAPTURE
The authors of this paper wish to highlight elements regarding the organology and the integration of the hardware component, functioning and simulation, in the real workspace, of a tracked mini robot prototype with electric auctioning obtained from solar energy capture with a load of explosives attached. The technological product developed and designed after completion of the experimental prototype is subject to a national patent (no. RO a 00684, issued by O.S.I.M.) granted to our institution, the result of research activities undertaken under a contract won by national competition, a grant for young research teams, PN-RU-TE-2010 type. The experimental prototype of a tracked mini robot, called Robo Gripes, part of the unmanned ground vehicles category having the ability to act autonomously and enabling its endowment with means of observation, listening, tapping, relaying, jamming and demining/reclamation of UXOs and IEDs. This paper reveals, in detail, the composing parts of the hardware component, as well as the way they are assembled in the mechanical structure of the mini robot under study.
Keywords: small robot Track, advanced military technology, „partnership” human – artificial, modularized structure, special applications
Cuvinte cheie: minirobot şenilat, tehnologii militare avansate, “parteneriat” uman-artificial, structură modularizată, aplicaţii speciale

Descarcare text

28-33 NOUTĂŢI ÎN ACTIVITATEA DE STANDARDIZARE ÎN DOMENIILE MANAGEMENTULUI ENERGIEI ŞI ÎN DOMENIUL ASPECTELOR DE MEDIU PRIVIND PRODUSELE ELECTRICE ŞI ELECTRONICE Partea a II-a

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Tatiana SCĂRLĂTESCU la de

NEWS IN ENERGY MANAGEMENT STANDARDISATION AND IN ENVIRONMENTAL STANDARDIZATION FOR ELECTRICAL AND ELECTRONIC PRODUCTS AND SYSTEMS – PART II
Energy management, energy efficiency of the industrial systems and environmental standardization for electrical and electronic products and systems are the main objectives that lead to improve security of supply and to reduce the row materials the primary energy consumption for an ecological environment. This paper presents European and International standardization activity regarding these fields.
Keywords: management, energy, electrical products, electronic products, waste, auditing, recycling, recovery, reuse, statement of product
Cuvinte cheie: management, energie, produs electric, produs electronic, deşeu, audit, reciclare, recuperare, reutilizare, declaraţie de produs

Descarcare text

28-32 NOUTĂŢI ÎN ACTIVITATEA DE STANDARDIZARE ÎN DOMENIILE MANAGEMENTULUI ENERGIEI ŞI ÎN DOMENIUL ASPECTELOR DE MEDIU PRIVIND PRODUSELE ELECTRICE ŞI ELECTRONICE Partea I-a

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Tatiana SCĂRLĂTESCU la de

NEWS IN ENERGY MANAGEMENT STANDARDISATION AND IN ENVIRONMENTAL STANDARDIZATION FOR ELECTRICAL AND ELECTRONIC PRODUCTS AND SYSTEMS – PART I
Energy management, energy efficiency of the industrial systems and environmental standardization for electrical and electronic products and systems are the main objectives that lead to improve security of supply and to reduce the row materials the primary energy consumption for an ecological environment. This paper presents European and International standardization activity regarding these fields.
Keywords: management, energy, electrical products, electronic products, waste, auditing, recycling, recovery, reuse, statement of product
Cuvinte cheie: management, energie, produs electric, produs electronic, deşeu, audit, reciclare, recuperare, reutilizare, declaraţie de produs

Descarcare text

28-31 MICRO-OSCILOSCOP

Această intrare a fost publicată în 2015 Volumul 28 și etichetată George MAHALU Radu PENTIUC la de

MICRO-OSCILLOSCOPE
The Micro-Oscilloscopes is an application that consists into electronic board with one general purposes controller Atmega328 in conjunction with an interfacing controller Atmega8U2-MU and some peripheries. Is used too a color graphic display with possibilities to drawing multiple traces in different colours. This application is small, light, cheap and flexible tool.
Keywords: controller, display, oscilloscop, electronic board
Cuvinte cheie: controler, afişor, osciloscop, placă electronică

Descarcare text

28-30 PORŢI LOGICE INTEGRATE TTL

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Nicodim UNGUR la de

TTL LOGIC GATES INTEGRATED CIRCUITS
Transistor–transistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors. It is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by transistors (contrast with RTL and DTL). TTL is notable for being a widespread integrated circuit (IC) family used in many applications such as computers, industrial controls, test equipment and instrumentation, consumer electronics, synthesizers etc. The designation TTL is sometimes used to mean TTL-compatible logic levels, even when not associated directly with TTL integrated circuits, for example as a label on the inputs and outputs of electronic instruments. Successors to the original bipolar TTL logic often are interchangeable in function with the original circuits, but with improved speed or lower power dissipation.
Keywords: family of logic circuits, bipolar, evaluation tests, scale correction

Cuvinte cheie: familie de circuite logice, tranzistoare bipolare, probe de evaluare, barem de corectare

Descarcare text

 

28-29 VIDEOPROIECTOARE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Cristian HADADI Steluţa ANGHELUŞ la de

PROJECTORS
Until a few years ago, projectors and multimedia projectors, were very expensive, very large and heavy and were used by very few. Progress in the industry, new high performance projectors, much cheaper and much smaller, can successfully design PowerPoint presentations or images HDTV, ideal for applications „home cinema”.
Any project, whatever technology is developed, has the same basic internal structure: a strong light source (lamp), an electronic video signal processing (PC, DVD etc.) and an optical system of projection. Descriptive, presents some technologies used in video projection: a chip DLP DMD; DMD chip DLP technology with three; Technology (D-ILA) Digital Direct Drive Image Light Amplifier.
Keywords: chips, projector, DLP, CRT monitor
Cuvinte cheie: cipuri, videoproiector, tehnologii DLP, tub catodic, monitor

Descarcare text

28-28 STOCAREA, ACCESAREA ȘI PRELUCRAREA INFORMAȚIILOR ÎN CADRUL SISTEMULUI VDR (VOYAGE DATA RECORDER)

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Cosmin KATONA Petru – Sergiu ȘERBAN la de

STORAGE, ACCESS AND PROCESSING OF INFORMATION WITHIN VDR SYSTEM (VOYAGE DATA RECORDER)
Increasing maritime traffic in recent years has led to an increase in maritime accidents, especially ships collisions, some of which reported casualties between crew members.
This paper presents the methods and possibilities of storage, retrieval and processing information, format and amount of data stored and the mechanisms for their discharge within a VDR system.
In the theoretical study of storage information methods there were types of VDR systems compared by their compatibility of different storage data. This systems can be useful for investigators when they manage a maritime accident on board ships.
Keywords: VDR (Voyage Data Recorder), information, storage
Cuvinte cheie: VDR (Voyage Data Recorder), informații, stocare

Descarcare text

28-27 IMPLEMENTAREA CORECTĂ A HRR DE LA INCENDII DE AUTOTURISME ÎN VEDEREA SIMULĂRII COMPUTERIZATE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Bogdan BRĂNIŞTEANU Constantin POPA Daniela POPESCU Florin ENACHE Ion ANGHEL Octavian LALU Silviu CODESCU Valeriu PANAITESCU la de

PROPER IMPLEMENTATION OF CAR FIRES HRR IN COMPUTER SIMULATION PURPOSE
The article presents the work of the authors concerning establishing the HRR (heat release rate) for modern cars considering the new materials used to build them. In order to do this, large scale test were studied involving small and middle size cars, in purpose to measure the burning time and determine HRR (heat release rate) using the oxygen calorimetric method. The results obtained are compared with some others similar results and become very important for knowledge and for establishing protection measures especially for close and semi-closed spaces crossed by cars.
Keywords: HRR, real scale test, simulation, oxygen calorimetric method
Cuvinte cheie : rata de eliberare a căldurii, testare la scară reală, simulare, oxygen, metodă calorimetrică

Descarcare text

28-26 MODULAŢIA IMPULSURILOR ÎN COD (MIC)

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Florica VARI la de

PULSE-CODE MODULATION (PCM)
Pulse-code modulation (PCM) is a method used to digitally represent sampled analogy signals. It is the standard form of digital audio in computers, Compact Discs, digital telephony and other digital audio applications. In a PCM stream, the amplitude of the analogy signal is sampled regularly at uniform intervals, and each sample is quantized to the nearest value within a range of digital steps. A PCM stream has two basic properties that determine the stream’s fidelity to the original analogy signal: the sampling rate, which is the number of times per second that samples are taken; and the bit depth, which determines the number of possible digital values that can be used to represent each sample.

Keywords: sampling, telecommunications, digital transmission, analogy, pulse code, quantization, coding

Cuvinte cheie: eșantionare, telecomunicații, transmisii digitale, analogice, impulsuri în cod, cuantizare, codare

Descarcare text

28-25 SEMNALE MODULATE CU PURTĂTOR ARMONIC

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Viorel HODUŢ la de

MODULATED SIGNALS WITH HARMONC CARRIER
In electronics and telecommunications, modulation means varying some aspect of a higher frequency continuous wave carrier signal with an information-bearing modulation waveform, such as an audio signal which represents sound, or a video signal which represents images, so the carrier will „carry” the information. When it reaches its destination, the information signal is extracted from the modulated carrier by demodulation. In amplitude modulation, the amplitude or „strength” of the carrier oscillations is what is varied. For example, in AM radio communication, a continuous wave radio-frequency signal (a sinusoidal carrier wave) has its amplitude modulated by an audio waveform before transmission.

Keywords: signal modulated, carrier harmonic, information, amplitude, operation detection/recovery

Cuvinte cheie: semnal modulat, purtător armonic, informație, amplitudine, operaţie de detecţie/redresare

Descarcare text

28-24 MĂSURI DE REABILITARE PENTRU CLĂDIRILE DE LOCUIT COLECTIVE – MODELUL T770

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Mihai JĂDĂNEANŢ Mircea Paul SĂMÂNŢĂ la de

REHABILITATION MEASURES FOR COLLECTIVE DWELLINGS – T770 MODEL
In this work are presented the measures needed to obtain a complete rehabilitation of collective dwellings constructed between 1978 until 1989. For a complete rehabilitation it is necessary to take into account the following measures: thermal rehabilitation of the envelope, replacement of all internal installations and equipment, upgrade of heating system, the introduction of a new staircase in order to accommodate an elevator and the integration of a multifunctional space on the terrace of the last level.
Keywords: sustainability, renewable energy, rehabilitation
Cuvinte cheie: sustenabilitate, energie regenerabilă, reabilitare

Descarcare text

28-23 VIABILITATEA ECONOMICĂ A MĂSURILOR DE REABILITARE COMPLETĂ ÎN SISTEM RETROFIX PENTRU CLĂDIRILE DE LOCUIT COLECTIVE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Mihai JĂDĂNEANŢ Mircea Paul SĂMÂNŢĂ la de

ECONOMIC VIABILITY OF RETROFIX COMPLETE
SYSTEM’S REHABILITATION MEASURES
FOR COLLECTIVE DWELLINGS
Following the RETROFIX rehabilitation measures, the comparison study between classic thermal rehabilitation and RETROFIX systems on the economic viability shows that, if you invest more money in superior efficiency system, you can obtain relatively good savings on energy.
Keywords: economic sustainability, renewable energy, rehabilitation
Cuvinte cheie: viabilitate economică, energie regenerabilă, reabilitare

Descarcare text

28-22 REABILITAREA STRUCTURALĂ A MONUMENTULUI ISTORIC. FIȘA DE INVENTARIERE PENTRU STRUCTURA PORTANTĂ A CASTELELOR ȘI CONACELOR – Partea a II-a –

Această intrare a fost publicată în 2015 Volumul 28 și etichetată George Dan DACIN la de

THE REHABILITATION OF THE HISTORIC
LOAD-BEARING STRUCTURES – PART II
A rehabilitation an intervention on a load-bearing structure, which stops the deterioration of the historic load-bearing structures, maintaining their present state: the geometrical-mechanical concept, the historic materials and the traditional construction technologies (usually the interventions on a historic load-bearing structure also entail consolidation works, not only the maintaining of the present state, thus the term the conservation of a historic load-bearing structure is rarely used).
The conservation of the historic load-bearing structures is related to: all those interventions which the present technical state of the historic load-bearing structures. It is rehabilitation measure of great importance; if it is adequately carried out, it can prevent the use of the other much more extensive and expensive measures in the long run, especially in the case of constructions with relatively constant functional parameters.
Keywords: degradation, conservation and rehabilitation of historic structures, studies parament
Cuvinte cheie: degradarea, conservarea şi reabilitarea structurilor portante istorice, studii de parament

Descarcare text

28-21 REABILITAREA STRUCTURALĂ A MONUMENTULUI ISTORIC. FIȘA DE INVENTARIERE PENTRU STRUCTURA PORTANTĂ A CASTELELOR ȘI CONACELOR – Partea I-a

Această intrare a fost publicată în 2015 Volumul 28 și etichetată George Dan DACIN la de

THE REHABILITATION OF THE HISTORIC
LOAD-BEARING STRUCTURES – PART I
A rehabilitation an intervention on a load-bearing structure, which stops the deterioration of the historic load-bearing structures, maintaining their present state: the geometrical-mechanical concept, the historic materials and the traditional construction technologies (usually the interventions on a historic load-bearing structure also entail consolidation works, not only the maintaining of the present state, thus the term the conservation of a historic load-bearing structure is rarely used). The conservation of the historic load-bearing structures is related to: all those interventions which the present technical state of the historic load-bearing structures. It is rehabilitation measure of great importance; if it is adequately carried out, it can prevent the use of the other much more extensive and expensive measures in the long run, especially in the case of constructions with relatively constant functional parameters.
Keywords: degradation, conservation and rehabilitation of historic structures, studies parament
Cuvinte cheie: degradarea, conservarea şi reabilitarea structurilor portante istorice, studii de parament

Descarcare text

28-20 STUDIU EXPERIMENTAL PENTRU DETERMINAREA CARACTERISTICILOR DE SIGURANŢĂ A STÂLPILOR ELECTRICI DE JOASĂ TENSIUNE

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Dorina SUCALĂ Ilie-Nicolae SUCALĂ Sorina Anamaria CIPLEA la de

EXPERIMENTAL STUDY TO DETERMINE THE CHARACTERISTICS OF LOW VOLTAGE
ELECTRICITY POLES
All homes, factories, modern technology (computers, tablets, and phones) need this energy. Certainly responsibility for production and safe operation of this type of energy is very high. Lack of energy often causes panic. Our life cannot be imagined without electrical current.
This paper focuses on treating the safety of the electric poles.
Keywords: power lines, electricity poles, torsion test, bending test
Cuvinte cheie: linii electrice, stâlpi, încercare la torsiune, încercare la încovoiere

Descarcare text

28-19 ASPECTE CONCEPTUALE PRIVIND CREŞTEREA PERFORMANŢELOR ENERGETICE ŞI ECOLOGICE A CLĂDIRILOR DIN REPUBLICA MOLDOVA

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Alexandr ŢULEANU Andrei BÎNZARI Constantin ŢULEANU Livia LEANCA Sergiu ŢULEANU la de

CONCEPTUAL ASPECTS ABOUT INCREASING ENERGETICAL AND ECOLOGICAL PERFORMANCES OF BUILDINGS IN THE REPUBLIC OF MOLDOVA
In this scientific article we are talking about specific concepts that can be used for energetically and ecological performance incensement of buildings in the Republic of Moldova and also the results that we abstain doing the energetically audits for a big varieties of buildings from our country.
Keywords: energy, energetically performance, reduction potential, adaptible-dinamic
Cuvinte cheie: energie, performanţă energetică, potenţial de reducere, dinamic-adaptiv

Descarcare text

28-16 CONSIDERATII DESPRE SISTEMUL DE MANAGEMENT AERONAUTIC AL ERORILOR

Această intrare a fost publicată în 2015 Volumul 28 și etichetată Andrei POPA Dragoş POPA Traian TOMESCU la de

CONSIDERATION ABOUT AERONAUTICAL ERRORS’ MANAGEMENT SYSTEM
The present paper regards elements about errors’ management system maintenance in civil and military aeronautical field. All aeronautical organisations must correlate their maintenance activities with errors’ management system, for decrease the higher risk of accident.
Keywords: maintenance, error, aeronautical
Cuvinte cheie: întreținere, eroare, aeronautică

Descarcare text