Autor: Budzik, G - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A demonstrative prototype of aeronautical dual-power path gear unit
Autorzy:: Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/247271.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aeronautical gears
toothed wheels
aeronautical power drives
Opis:: The paper presents a process of designing, modelling and manufacturing of a demonstrative prototype of a dual-power path gear unit to be applied in aeronautical systems of drive transmission. The process of making a demonstrator of a dual-power path gear unit by means of 3D-CAD modelling and Rapid Prototyping has been described here. Designing gears is based on Computer Aided Design (CAD), Computer Aided Engineering (CAE), Computer Aided Manufacturing (CAM) systems including also Rapid Prototyping (RP). The first stage of the designing process of a gear unit is always defining basic parameters of gear work (among others; power, rotational speed, transmission ratio) depending on the unit's predestination. On the basis of the above, the calculation of main constructional parameters is carried out. Subsequently, it is possible to make 3D-CAD models of toothed wheels and the remaining parts of the gear unit. In case of designing demonstrative prototypes, it is important to take into consideration the assumptions of modelling similarity to a real gear unit. 3D-CAD systems are often equipped with modules for analysing geometrical parameters and cooperation of individual parts of the unit for example the area of contact. A detailed analysis of cooperation of gear parts of the unit allows for detecting models' faults early and for deleting them. After making 3D-CAD models one can approach to creating a prototype by means of Rapid Prototyping methods. It is necessary to prepare the numerical data essential as a subsequent stage of the process of making the demonstrator. On that basis the individual parts of the gear unit are made in an incremental process. The accuracy of creating a physical prototype depends mainly on the accuracy of a 3D-CAD/3D-RP model prepared in a process of processing numerical data. A demonstrator described in the paper has been made by means of FDM method. The prototype allowed for analysing constructional solutions of gear units on a physical model and for preparing assumptions for introductory stand tests.
Źródło:: Journal of KONES; 2011, 18, 4; 41-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Possibilities of using vacuum casting process for manufacturing cast models of turbocharger impellers
Autorzy:: Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/243370.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: turbocharger impeller
rapid prototyping systems
vacuum casting
Opis:: Possibilities of producing cast models of turbocompressor impellers in silicon matrices by vacuum casting process are presented. Vacuum casting process enables producing cast models of impellers for precision casting. A standard model for silicon matrix making is a prototype produced with stereo lithography technique. The advantage of stereo lithographic model is its easy machinability that enables higher quality of impeller model surface. Silicon matrices enable casting of prototype models from foundry plastics, such as: casting wax, polyurethanes, polyester and epoxy resins. Properties of the plastic material used determine the shape of die parting. Because of its low strength, casting wax enforces die parting into a larger number of elements, thus enabling to pull it out without damage. The prototypes made from casting resins require considerably fewer parting surfaces. Silicon matrices enable to manufacture from several to several dozen cast patterns of prototype turbocharger impellers. The basic advantage of vacuum casting process is the shortening of prototype making time and cost, compared to traditional methods. The silicon matrixes permit casting and low-pressure injections of plastics. Some plastics may be used for producing foundry patterns for various metal alloy casting processes.
Źródło:: Journal of KONES; 2007, 14, 3; 125-130
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Surface roughness of aircraft engine blade models produced with various methods of rapid prototyping
Autorzy:: Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/243159.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
rapid prototyping systems
surface roughness
impeller blade
Opis:: Results of the study of surface roughness of the aircraft engine blade model, produced with various methods of rapid prototyping are presented. Blade models were made with two incremental methods of rapid prototyping: stereo lithography (SLA-250 device) and three-dimensional printing (Z510 Spectrum printer). In incremental methods of rapid prototyping a model is formed by hardening of consecutive layers of the base material. Model position in the equipment work area has a significant influence on surfaces quality of a prototype, especially in stereo lithography method. It is essential in case of elements with curvilinear surfaces like aircraft engine blades. A CAD blade has been exported to the STL format within surface precision of 0,001 mm. Afterwards, it was duplicated and set up in various positions of the virtual work area of the 3D Light year programme dedicated to the SLA-250 device. Data prepared in this way have been used for producing physical models. Roughness surveys were carried out with the Talyscan150 device, manufactured by Taylor Hobson Precision. The measurements permitted making three-dimensional maps of surfaces of blade prototypes. Thanks to that, it was possible to determine optimum position of blade in the work area of RP devices in respect to prototype surface quality.
Źródło:: Journal of KONES; 2007, 14, 2; 55-60
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Determination of the total efficiency for engine with spark - ignition and compression - ignition
Autorzy:: Cygnar, M.
Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/246712.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: two fuel injection systems
spark-ignition
compression-ignition engines
Opis:: This paper presented of developing a power system for two fuel injection systems – spark ignition and compression ignition. Two ways to initiate combustion process were used: initially the spark ignition, and after it turns off - the combustion is initiated by the injection of ignition injected fuel. The composition of the ignition dose was developed through the research conducted in order to adjust the right proportions of chemical components to obtain the best parameters of the combustion process. The study considered the performance of the ignition dose injected into the engine cylinder and its evaporation process, the charge stratification, the formation of toxic emission and the total efficiency of the engine. Experimental studies were carried out on a test engine equipped with two injection systems and automatic mode change control management. The scope of research included: – determining the basic characteristics of the engine operation, taking into account the injection advance angle of the ignition dose, – comparative studies of engine performance and exhaust gas composition, working with spark ignition and initiated by compression ignition of the ignition dose, – determining the increase in the general efficiency of the two-circulation engine working with injection of ignition dose compared to conventional power system with the initiation of combustion process from the spark plug.
Źródło:: Journal of KONES; 2013, 20, 1; 41-48
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Improving the spatial resolution of DICOM data using the Lanczos resampling filter
Poprawa rozdzielczości przestrzennej danych DICOM poprzez zastosowanie filtru Lanczos
Autorzy:: Budzik, G.
Turek, P.
Powiązania:: https://bibliotekanauki.pl/articles/262052.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:: spatial resolution
accuracy
multi-detector computer tomography
Lanczos filter
cranium
rozdzielczość przestrzenna
dokładność
tomografia wielorzędowa
filtr Lanczos
czaszka
Opis:: This paper presents an initial study to improve the spatial resolution of DICOM data using the Lanczos resampling filter. DICOM data from the cranium area of three patients, were obtained using a Somatom Sensation Open 40 scanner. A model with voxel dimension 0.4×0.4×2.4 mm was chosen as the gold standard, over the modeling approach using voxel dimensions 0.4×0.4×4.8 mm. Using the Lanczos resampling filter, changed the slice thickness from 4.8 mm to 2.4 mm. The influence of the Lanczos resampling filter on improving the spatial resolution of data was very similar across all 3 patients. The Lanczos filter changed the spatial resolution of the data and improved the accuracy of reconstruction of cranium geometry. The presented research highlights new opportunities to control deviations at the data processing and modeling of geometry stages.
Artykuł przedstawia badania wstępne, dotyczące poprawy rozdzielczości przestrzennej danych DICOM, poprzez zastosowanie filtru Lanczos. Dane DICOM trzech pacjentów, zostały zebrane przy użyciu tomografu Somatom Sensation Open 40 i obrazują obszar sklepienia czaszki. Model ze strukturą voxela 0,4×0,4×2,4 mm został wybrany jako nominalny, względem modelu o strukturze voxela 0,4×0,4×4,8 mm. Stosując filtr Lanczos, zmieniono grubość warstwy obrazu z 4,8 mm na 2,4 mm. W wyniku zastosowania filtru Lanczos, polepszono rozdzielczość przestrzenną danych oraz dokładność odwzorowania geometrii sklepienia czaszki. Przedstawione badania, otwierają nowe możliwości pozwalające na minimalizacje błędów powstałych na etapie przetwarzania danych oraz odtwarzania geometrii obszaru sklepienia czaszki.
Źródło:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2017, 23, 2; 106-112
1234-5563
Pojawia się w:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Methodology of measurement aeronautical bevel gears utilizing an optical 3D scanner using white and blue light
Metodyka pomiarów stożkowych kół zębatych przekładni lotniczej za pomocą optycznego skanera 3D z zastosowaniem światła białego i niebieskiego
Autorzy:: Budzik, G.
Dziubek, T.
Powiązania:: https://bibliotekanauki.pl/articles/328467.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: diagnostics
bevel gear
aircraft gearbox
optical scanner
diagnostyka
stożkowe koło zębate
przekładnia lotnicza
skaner optyczny
Opis:: Accuracy diagnostics bevel gears of aircraft gearbox has become a key component in today’s manufacturing process. Properly prepared and carried out the measurement process of bevel gears determines its accuracy, productivity and the production costs of aeronautical gearbox. In the process of assessing the accuracy of manufacturing, majority of manufacturers of bevel gears use specialized contact coordinate measuring machines. Therefore, this article depicts different perspective on measurements of bevel gears using a universal measuring device, which is an optical 3D scanners ATOS, using in the process of measuring white and blue light. Due to the use of the optical scanners ATOS in measurement process, it was necessary to develop a methodology dealing with the process of assessing and accuracy, in order to achieve the desired results of measurement. The studies take into account the economic aspects of the use of technical diagnostics in the production process. The article presents an analysis of conditions and developed rules concerning the preparation of a model for measurement. It also contains hints and a description of the measurement process. Furthermore, it depicts the rules specifying the interpretation of measurement results as well as the technical rules of their realization.
Diagnostyka dokładności wykonania stożkowych kół zębatych przekładni lotniczych stała się obecnie kluczowym elementem procesu ich wytwarzania. Odpowiednio przygotowany i przeprowadzony proces pomiaru stożkowych kół zębatych determinuje jego dokładność, wydajność oraz koszty produkcji przekładni. Większość producentów stożkowych kół zębatych w procesie oceny dokładności wykonania, stosuje specjalistyczne stykowe współrzędnościowe maszyny pomiarowe. Dlatego niniejszy artykuł będzie innym spojrzeniem na pomiary stożkowych kół zębatych z zastosowaniem uniwersalnego urządzenia pomiarowego, jakim są optyczne skanery 3D ATOS wykorzystujące w procesie pomiaru białe i niebieskie światło. Z uwagi na zastosowanie w procesie pomiaru optycznych skanerów Atos, w celu osiągnięcia pożądanych wyników pomiarów niezbędne było opracowanie metodologii dotyczącej przebiegu procesu pomiaru oraz oceny dokładności. Przeprowadzone badania uwzględniają ekonomiczne aspekty zastosowania diagnostyki technicznej w przebiegu procesu produkcyjnego. Artykuł przedstawiał będzie analizę warunków oraz opracowane zasady dotyczące przygotowania modelu do pomiaru. Zawarte zostaną w nim również wskazówki oraz opis samego procesu pomiaru. Ponadto przedstawiono zasady określające interpretację wyników pomiarów wraz z technicznymi zasadami ich wykonania.
Źródło:: Diagnostyka; 2015, 16, 1; 51-56
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Modelling and testing of dynamic properties of C0-45 turbochargers
Autorzy:: Budzik, G.
Mazurkow, A.
Powiązania:: https://bibliotekanauki.pl/articles/198705.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: turbocharger
construction parameters
dynamic properties
level of vibration
rotor speed
turbosprężarka
parametry konstrukcyjne
właściwości dynamiczne
poziom wibracji
prędkość wirnika
Opis:: The paper presents modelling process and results of the bench tests of the C0-45, which is a turbocharger for heavy-duty diesel engines. For turbochargers like this, it is necessary to measure the level of vibration. This paper presents the test results for 115 turbochargers. Rotor speed during the tests varied between 25,000 and 42,000 rpm. Rotor speed during the tests on a C0-45 turbocharger varied within three ranges, i.e., Range I: n=25,000÷32,000 rpm and a=0.5g; Range II: n=33,000÷38,000 rpm and a=1.0g; Range III: n=39,000÷42,000 rpm and a=1.5g; (g=9.81m/s2). Measurement of vibrations was realized by a sensor located on the body of the turbocharger. Bench tests also included measurement of key charge parameters such as the amount of mass trapped, mean flow velocities, turbulence level, gas pressure, temperature and oil flow. The results are presented in the form of diagrams showing the amplitude of the acceleration function with regard to the rotor’s RPM. Research shows that using the correct parameters in construction and technological processes of assembly are very important for the effective functioning turbochargers.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 97; 17-25
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Defining instantaneous contact track of aeronautical bevel gear applying finite elements method and rapid prototyping method
Autorzy:: Pacana, J.
Kozik, B.
Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/246384.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: contact track
FEM
bevel gear
Opis:: An instantaneous contact track is one of theparameters determining correct work of wheels in gears. It is the surface on the side of the tooth on which a contact is made with the cooperating surface of the other wheel in a given moment. The correctness of cooperation of wheels and kinematic accuracy of the gear depends on the shape and the size of an instantaneous contact track and its changes during rotation of wheels. Both the area of contact track and its position also depend on the greatness of load being in operation. Therefore it is important to carry out calculations for conditions of work which are the closest to real working conditions of aeronautical bevels gear. At the designing stage an instantaneous contact track can be determined by means of finite elements method (FEM). The article presents a methodology of defi ning contact track for loaded bevel gear by means of numerical finite elements method. The paper also presents Information about creating virtual models ofwheels, generating network of finite elements, defining edge conditions as well as carrying out calculations and processing the received results. Finally, it also presents the received solutions concerning the distribution of reduced stresses andan instantaneous contact track as well as the summary track of wheel teeth cooperation in a loaded bevel gear. However the results received by means of simulation of virtual models cooperation require verifying by other methods, favourably experimental ones. The received numerical solutions made using finite elements method were therefore compared to proper results recorded during examining real models of the same wheels. The examination was carried out on a special stand which had been designed end created for this purpose. The used wheels had been made by means of rapid prototyping method.
Źródło:: Journal of KONES; 2010, 17, 2; 379-386
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Universal test stand for research of aeronautical multi - power path gear demonstrators
Autorzy:: Kozik, B.
Budzik, G.
Cieplak, M.
Powiązania:: https://bibliotekanauki.pl/articles/246565.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: test stand
multi-power path gear
demonstrator
Opis:: Gears used for the tests may be made of metal or plastic [1, 2, 5]. The stand has been designed in an open system and it is powered by a three-phase electric motor. The control is provided by a single-phase inverter with three outputs, which provides full speed control. All components have been installed on a table equipped with T-slots in order to determine the optimal position of the drive and the tested gear. The load of the stand is realized by an electromagnetic powder brake. Load torque of the gear depends on the supplied current. During the test, you can change settings such as speed or load torque. Torque meters installed on input and output of the demonstrator let you control the work of the whole gear. Values supplied by the torque meters (torque and speed) are recorded on a computer in real time (according to PC RTC) and archived by specialized software. The software installed on your computer allows you to view results of the measurements. The possibility to control working time lets you precisely define the time intervals of various stages of the research. Using timer makes it possible to observe the current consumption of the transmission and helps to establish the research process. Thanks to data, recording you will know when the gear is damaged. Tests at this stand allow for obtaining stable working parameters, and thus for obtaining not distorted, accurate results of the demonstrator operation. Changing the gear is exceptionally simple because of the use of sliding splined connections of the couplings. Separating couplings between which the gear is situated and unlocking, the terminal allows exchanging it.
Źródło:: Journal of KONES; 2012, 19, 3; 233-238
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Automated measurement of bevel gears of the aircraft gearbox using GOM
Autorzy:: Marciniec, A.
Budzik, G.
Dziubek, T.
Powiązania:: https://bibliotekanauki.pl/articles/242283.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gear
aircraft gearbox
coordinate measuring technique
Opis:: Manufacture of aircraft gearbox elements requires control of gear geometric parameters at different stages of technological process. Acceleration and automation of measurement process can affect the duration of the finished item production. In case of measurement of gear wheels using modern technologies based on numerical machines, measurement process is based on processing of numerical data obtained by measurement using coordinate measuring machines. The goal of this paper is to present the opportunity to automate the measurement process of bevel gears, using coordinated optical scanner ATOS by GOM, equipped with a turntable. Using coordinate measuring technique, you can specify a set of methods and procedures for the designation of the complex dimensions of physical objects and transform them into a computer program space of coordinate measuring devices. The topics included in the article are intended to show the capabilities of the device used to improve the measurement process and shorten its time, and hence, lower its costs. Another thing described in the paper is the impact of measurement performance in automatic mode on the quality of performance - the numerical image of scanned surface, from the standpoint of accuracy and number of collected data points in the shortest time. The article includes an analysis of conditions related to the measurement works, such as the process ofpreparing the model and measurement equipment and data processing capacity. The result of the work will be presented methodology for automated scanning measurements of bevel Sears.
Źródło:: Journal of KONES; 2011, 18, 2; 287-292
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis of possibility of applying atypic al meshing in driving units of cars
Autorzy:: Kozik, B.
Budzik, G.
Pacana, J.
Powiązania:: https://bibliotekanauki.pl/articles/242388.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gears
involute profile
atypical meshing
Opis:: A constant tendency in the development of gear transmission is aiming for increasing its load capacity and minimalizing its outside dimensions and weight. It is particularly important in automotive vehicles. In every type of transmission, among others in gear-boxes, mainly involute profile wheels are used. The work presents analysis of possibility of applying a typical meshing in driving units of cars. This kind of meshing can be alternative to involute meshing which is most widely used in gear transmission. Among existing solutions of this type, Nowikow meshing is applied most often. A different kind of concavo-convex gearing is BBW type gearing. The gearing is obtained by generation with a tool with reference profile in which tooth profile of a rack is an involute. The analysis of possibility of applying has been carried out with the exemplary concavo-convex BBW type gearing. In BBW type gearing a wheel with a smaller number of teeth has a positive profile curvature, and a cooperating wheel has a negative curvature. Teeth profiles are conjugate ones, transverse contact ratio is higher than l, so this kind of gearing may be used also in gears with straight teeth. What is more linear contact occurring along the whole width of mating teeth, in comparison to point contact in Nowikow meshing, creates possibilities of obtaining higher load capacity of gearing. BBW gearing based on involute-derivative tooth profiles is characterized by smaller sensitivity to the change of axle distance than Nowikow meshing.
Źródło:: Journal of KONES; 2009, 16, 2; 225-230
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Determining of model similarity for flexspline of harmonic drive with the use of FEM and extensometer method
Autorzy:: Budzik, G.
Kozik, B.
Pacana, J.
Powiązania:: https://bibliotekanauki.pl/articles/242442.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanics
harmonic drives
flexspline
FEM
extensometers
Opis:: This paper presents an analysis of the feasibility of using the model similarity method in engineering design. The analysis applies to virtual and physical models of the flexspline body of harmonic gear drive. The task consisted in determining stress distribution in the virtual models of the flexspline by means of the finite element method (FEM) and next its verification during bench tests by the extensometer method. The values of stresses calculated by the FEM method and the extensometer method were compared with each other with the aim ofdefming model similarity. The numerical calculations were made by means of the ADINA application which uses FEM with the use of contact elements. Stress distribution calculations applied to simplified virtual models of the flexspline. By the simplification of models a great number of finite elements used for the discretisation process were limited and because of that the time of calculations was shortened. The simplified model was precise enough to determine the stresses in the flexspline body. The subject of this analysis was the impact of different values of the torque moment T2 on the stresses in the flexspline body of the harmonie drive. The results of numerical calculations were checked against the standing tests of the real drive by applying the extensometer method. During the work of the gear, the values of relative elongation were measured and, based on them, the values of stresses were determined and compared to the results of the numerical calculations by FEM in the analogous cross-sections of the flexspline. The comparability of the results received by both methods proves both that the models used in the numerical calculations were properly designed and that the assumptions as well as the calculation were properly made. The determining of model similarity for the examined harmonie drive will make it possible to carry out analyses of stress calculations by FEM on virtual models without the necessity to verify them by laboratory standing tests each time.
Źródło:: Journal of KONES; 2009, 16, 2; 55-60
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Safety increase on crossroads in Rzeszów by installation of light signaling with automatic roads traffic measurements
Autorzy:: Budzik, G.
Jaskólski, J.
Mierzwa, R.
Powiązania:: https://bibliotekanauki.pl/articles/242446.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road rebuilding
safety increase
crossroads
Opis:: The article presents solutions of crossroads which make it possible to eradicate dangerous places at selected crossroads in Rzeszów. The solution consists in redeveloping traffic lights signalizations and installations of self-exited system with automatic traffic measurements. The idea of safety increase comes down to the implementation of accommodated traffic lights for all road traffic users. This installation is adapted to the road traffic changes by altering the time of green signals for vehicular traffic and omitting the green lights for pedestrians if not necessary. The traffic control is realized on the basis of current registration of traffic intensity with a video detecting system (for vehicular traffic) and push-button (for pedestrian traffic). At the crossroads there are separate roadways to turn left. The traffic control system is divided into four elementary traffic phases, the sequence of which is dependent on the analyzed traffic situation. The safety increase was also accomplished by improvements of friction grip. It was a result of a special layer of SMA asphalt (4 centimeter thickness) application. Additionally, there were safety barriers built, which preclude car parking in the neighborhood of crossroads. These solutions increased visibility at crossroads. The goal of the rebuilding was to decrease the number of road accidents in vehicular and pedestrian traffic. The bettering of the traffic flow and the improvement of safety at Rzeszów crossroads were achieved by the crossroads rebuilding and traffic control system application at the following crossroads: Lubelska - Mączka - Wyzwolenia streets and Targowa -Pilsudskiego - Głowackiego Streets. The investment project assumed over 50% decrease of the quantity of road accidents.
Źródło:: Journal of KONES; 2009, 16, 2; 49-53
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Analysis of surface roughness of transmission gear teeth made by different rapid prototyping methods
Autorzy:: Budzik, G.
Markowski, T.
Sobola, M.
Powiązania:: https://bibliotekanauki.pl/articles/244106.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: surface roughness
rapid prototyping
bevel gears
Opis:: Article presents analysis of surface roughness of aircraft and vehicle power transmission system gear teeth made by different Rapid Prototyping methods. Gear box models have been made by two rapid prototyping methods: stereolithography (SLA), three dimensional printing (3DP) and two rapid tooling methods: Vacuum Casting (VC), Low Pressure Injection (LPI). Surface roughness for rapid prototyping methods is determined mostly by layered system of building model. It depends on process parameters: layer thickness and model position in working space of RP machine. Vacuum Casting and Low Pressure Injection are Rapid Tooling technologies. For this technology final surface roughness is a reflection of surface parameters of tools (silicon mould, silicon matrix). The paper presents results of surface roughness measurements of gear made by few RP and RT methods. The most important thing was an analysis of surface roughness made by Rapid Tooling methods. In these methods surface roughness depends on surface parameters of basis RP model. For basis RP models finishing processing was applied. This process improves parameters of the surface. This research process allowed to define the influence of chosen RP and RT method and its parameters on surface roughness of gear tooth. It permitted to order rapid prototyping methods for application of power transmission prototype making process.
Źródło:: Journal of KONES; 2008, 15, 2; 29-34
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Tytuł:: A universal stand for air gear test made in Rapid Prototyping process
Uniwersalne stanowisko do badań przekładni lotniczych wykonanych w procesie Rapid Prototyping
Autorzy:: Budzik, G.
Kozik, B.
Cieplak, M.
Powiązania:: https://bibliotekanauki.pl/articles/327802.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: diagnostics
production
universal stand
rapid prototyping
RP
air gear
diagnostyka
wytwarzanie
stanowisko uniwersalne
Rapid Prototyping
przekładnia lotnicza
Opis:: This paper presents a universal stand to diagnose air gear models made in the process of Rapid Prototyping (RP) at the production stage. The stand is designed in an open system, powered by a three-phase electric motor with a power of 0.75 kW, whose speed is controlled by a single-phase inverter. The stand is equipped with two measuring shafts, connected directly to a recorder RMC that allow you to read values torque and rpm in real time. Between this measuring shafts installed a gear reducer to allow the exchange of tested pair of gears. Powder brake with variable speed control is installed on the output as a load. Responsible for data acquisition software is copyright RMC-M - Monitor, which allows you to preview the results of measurements and print them in a report. Trials conducted on the universal test stand for air gears demonstrators give reproducible, stable work parameters and thus enable to obtain uninterrupted, accurate measurements.
W niniejszym artykule przedstawiono uniwersalne stanowisko do diagnostyki na etapie wytwarzania modeli przekładni lotniczych wykonanych w procesie Rapid Prototyping (RP). Stanowisko zaprojektowane w układzie otwartym napędza trójfazowy silnik elektryczny o mocy 0,75kW, którego obroty regulowane są za pomocą jednofazowego falownika. Stanowisko wyposażono w dwa momentomierze, podłączone bezpośrednio do rejestratora RMC, które umożliwiają odczyt wartości momentu i obrotów w czasie rzeczywistym. Między momentomierzami zainstalowano przekładnię reduktora umożliwiającą wymianę badanej pary kół zębatych. Jako obciążenie zamontowano na wyjściu hamulec proszkowy z płynną regulacją obrotów. Za akwizycję danych odpowiedzialne jest autorskie oprogramowanie RMC-M –Monitor, które umożliwia podgląd wyników pomiarów i ich wydruk w formie raportu. Próby prowadzone na uniwersalnym stanowisku do badań demonstratorów przekładni lotniczych pozwalają na uzyskanie powtarzalnych, stabilnych parametrów pracy i tym samym na otrzymanie niezakłóconych, dokładnych wyników pomiarów.
Źródło:: Diagnostyka; 2015, 16, 2; 27-30
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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