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1.

001-es BibID:BIBFORM105917
035-os BibID:(Scopus)85138777178
Első szerző:File Máté
Cím:Optical Investigation of the Strain Distribution with Different Orientations on Aerospace Composite Material / File Máté, Kállai Imre, Huri Dávid, Mankovits Tamás
Dátum:2023
ISSN:2195-4356 2195-4364
Megjegyzések:The orientation in composite materials determines the mechanical properties of the structure. Different orientations have different usages, and by combining multiple layers with changing orientations the best mechanical properties can be achieved for the given load case. This work aims to investigate the effects of the different orientations on the mechanical properties of a glass-fibre reinforced composite material used in aerospace components. Multiple specimens were prepared using the vacuum bagging technology with 0°, 45° and 90°orientations based on the warp direction. The laboratory measurements were done with the INSTRON 68TM-10 material testing machine and the GOM Aramis 12M full-field optical measurement system, which works based on the digital image correlation method. The Aramis system enables the real-time tracking and visualization of the displacement and strain values on the whole surface of the specimen. Under the same conditions tensile tests were performed on each specimen and the results were compared. The mechanical material properties of each orientation were determined.
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák konferenciacikk
folyóiratcikk
digital image correlation, material testing, fibre orientation, prepreg composite material
Megjelenés:Lecture Notes in Mechanical Engineering. - 2023 (2023), p. 549-557. -
További szerzők:Kállai Imre (mérnök) Huri Dávid (1990-) (gépészmérnök) Mankovits Tamás (1981-) (gépészmérnök)
Pályázati támogatás:TKP2020-NKA-04
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Internet cím:DOI
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2.

001-es BibID:BIBFORM111251
035-os BibID:(Scopus)85138822454 (WoS)000926145500028
Első szerző:Kocsis Dénes (műszaki menedzser, környezetmérnök)
Cím:Electromobility : The Spreading of Electric Cars Versus Internal Combustion Engine Vehicles / Kocsis Dénes, Kiss Judit T., Bellér Gábor, Árpád István
Dátum:2023
ISSN:2195-4356
Megjegyzések:In terms of road transportation, the ratio of newly purchased electric passenger cars is increasing to the detriment of internal combustion engine vehicles. According to current assumptions, this process will continue, but the speed and extent of the change are still open questions. The entire road transport sector is just before a very significant transformation and forecasting this conversion is a burning issue. The changes will arise many challenges, among which growing electricity demand is a great concern. It simultaneously appears to shift towards renewable energy sources in electric power generation. In this work, the growth of newly purchased and already used electric light vehicles is investigated based on the example of Hungary. Taking into consideration the latest available data, the spreading of electromobility is forecasted using an exponential model. It is assumed that the annual new electric car`s number shows exponential growth until the year when all newly purchased light vehicles will be fully electric. Three different scenarios are investigated in the manuscript: one assuming a slow increase, one calculating with a rapidly spreading, and one between these two other options representing the most likely case based on the authors` expectations. Calculating the expected numbers of electric vehicles and their ratio among all light vehicles makes it possible to forecast the additional electricity demand. Based on our opinion, it is a very important and urgent issue, taking into consideration the very long investment and realization time of projects aiming at generating surplus electrical power.
Tárgyszavak:Műszaki tudományok Közlekedéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Electromobility
Modelling
Electric cars
Megjelenés:Lecture Notes in Mechanical Engineering. - 2023 (2023), p. 330-338. -
További szerzők:Kiss Judit, T. (1968-) (közgazdász) Bellér Gábor (1986-) (vegyész, angol-magyar szakfordító) Árpád István (1961-) (vegyészmérnök)
Pályázati támogatás:TKP2020-NKA-04
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Internet cím:DOI
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3.

001-es BibID:BIBFORM111256
035-os BibID:(Scopus)85138825094 (WoS)000926145500065
Első szerző:Nemes Dániel (gépészmérnök)
Cím:Vehicle Dynamics Modelling of the Mercedes-Benz REFORM 501 LE Urban Bus by Using AVL Cruise Software / Nemes Dániel, Hajdu Sándor
Dátum:2023
ISSN:2195-4356 2195-4364
Megjegyzések:The goal of the research presented in this article is to create a vehicle dynamics model, with which can simulate the emissions and consumption data of buses. During the research we created a vehicle dynamics model with AVL Cruise software. This is a longitudinal vehicle model that can be used to analyze the behavior of the bus in the direction of travel, considering different losses, resistances, inertial effects of rotating and traveling masses, and wheel grip properties and rolling resistances. Our future goal is to explore the development possibilities of the vehicle and to make a proposal for the development and possible structural transformation of the powertrain elements.
Tárgyszavak:Műszaki tudományok Gépészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Urban bus
dynamics modelling
AVL Cruise
simulation
emission
consumption
Megjelenés:Lecture Notes in Mechanical Engineering. - 4 (2023), p. 793-798. -
További szerzők:Hajdu Sándor (1978-) (gépészmérnök)
Pályázati támogatás:TKP2020- NKA-04
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Internet cím:DOI
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4.

001-es BibID:BIBFORM111321
035-os BibID:(Scopus)85138779915 (WoS)000926145500014
Első szerző:Pálinkás Sándor (anyagmérnök, gépészmérnök)
Cím:Influence of Speed to Rolling Resistance Factor in Case of Autobus / Pálinkás Sándor
Dátum:2023
ISSN:2195-4356 2195-4364
Megjegyzések:The fuel consumption of autobuses is significantly influenced by the different losses, such as air resistance, tyre rolling resistance of tire and other losses (bearing losses, losses in the drive, gearbox, etc.). The main goal of my current research is to work out indirect methods of measurement via experiments carried out with Mercedes-Benz REFORM 501 autobus to define rolling resistance, one of the most decisive losses. During the evaluating of measurements, I used a special method because the power values were determined based on the power characteristic curve of OM 936/260 kW engine of the bus. During my calculations, I considered the losses due to rolling resistance and air resistance and other losses due to the use of additional auxiliaries furthermore, the losses in the drive elements of the vehicle (3% of the used engine power) were considered as constant. Later on, the defined values will serve as input data for modelling the vehicle energetics calculations.
Tárgyszavak:Műszaki tudományok Gépészeti tudományok magyar nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Rolling resistance
Air resistance
Fuel consumption
Megjelenés:Lecture Notes in Mechanical Engineering. - 2023 : 4 (2023), p. 157-164. -
Pályázati támogatás:TKP2020-NKA-04
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Internet cím:DOI
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5.

001-es BibID:BIBFORM111322
035-os BibID:(Scopus)85138781749 (WoS)000926145500035
Első szerző:Vámosi Attila (mérnök, informatikus)
Cím:Investigation the Effect of the Data Frequency on the Driving Cycle of an Urban Bus Route / Vámosi Attila, Nemes Dániel, Czégé Levente, Kocsis Imre
Dátum:2023
ISSN:2195-4356 2195-4364
Megjegyzések:In this paper, focusing on a designated route of public transport in Debrecen, we examine the possibilities of creating a driving cycle representative for the route. The background of the work is, that in the framework of a largerscale research project we examine the possibility of how to reduce the bus's emissions by modifying the drive chain of the current diesel vehicle. A dynamic model suitable for performing the calculations was developed, in which the movement of the vehicle in traffic is described by the driving cycle. The data provided by the data acquisition equipment of the bus on the designated route is available for the creation of the special driving cycle. In this paper, we look for the answer to the question: how the difference in data density affects the driving cycle and how it modifies the parameters describing its representativeness.
Tárgyszavak:Műszaki tudományok Közlekedéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
real traffic data
micro-trip method
driving cycle
urban bus route
Megjelenés:Lecture Notes in Mechanical Engineering. - 2023 : 4 (2023), p. 421-427. -
További szerzők:Nemes Dániel (1997-) (gépészmérnök) Czégé Levente (1978-) (gépészmérnök) Kocsis Imre (1969-) (matematikus, gépészmérnök)
Pályázati támogatás:TKP2020-NKA-04
Egyéb
Internet cím:DOI
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