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Transport Problems

Silesian University of Technology

Subject: Economics , Transportation , Transportation Science & Technology

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eISSN: 2300-861X

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SIMULATION OF THE ROUTE NETWORK AND FERRY TRAFFIC INTENSITY BASED ON THE PROCESS OF DISCRETIZATION AND CIRCOS PLOT INTENSITY DIAGRAM
DEVELOPMENT AND IMPLEMENTATION OF RETRO-REFLECTIVE ELEMENTS FOR AUTOMATIC ACCESSORIES AND PLACES OF PLANNED POINTS
ADAPTATION OF THE SERVQUAL METHOD FOR TESTING THE QUALITY OF PASSENGER AIR SERVICES
A Study of the Dynamic Parameters Influence over the Behavior of the Two-Section Articulated Vehicle during the Lane Change Manoeuvre

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VOLUME 15 , ISSUE 3 (September 2020) - List of articles

DECELERATION AND DEFORMATION DURING DYNAMIC LOADING OF MODEL CAR BODY PARTS AFTER POST-ACCIDENT REPAIR

Damian HADRYŚ/ Andrzej KUBIK/ Zbigniew STANIK

Absorption of impact energy by the passive safety elements of the vehicle body is the basic feature to ensure conditions of safety for the driver and passengers in transport. The parts especially designed for this objective in the self-supporting car body are longitudinals. Their energy-absorbing features are designed in different ways. Evaluation of the degree to which the vehicle (body) ensures safety during a collision is difficult and expensive. Usually, tests under impact conditions are req(..)

DOI: 10.21307/tp-2020-029

Published Online: 05-September-2020

POWER FLOWS IN A HYDROSTATIC-MECHANICAL TRANSMISSION OF A MINING LOCOMOTIVE DURING THE BRAKING PROCESS

Vadym SAMORODOV/ Anatoliy BONDARENKO/ Igor TARAN/ Iryna KLYMENKO

This paper considers the braking process of a mine diesel locomotive with hydrostatic mechanical transmission (HSMT) operating according to the “input differential” scheme. Braking process modeling involves four implementation methods. Identification and systematization of basic regularities in the distribution of power flows within a closed transmission contour in the process of braking have been performed with the help of software support developed by means of MatLab/Simulink. The simulation r(..)

DOI: 10.21307/tp-2020-030

Published Online: 05-September-2020

INFLUENCE OF SYNTHETIC FUEL ON NITRILE RUBBERS USED IN AVIATION

Tomasz BIAŁECKI/ Bartosz GAWRON/ Bolesław GIEMZA/ Jadwiga GŁĄB

This paper investigates the influence of alternative fuel on selected butadiene–acrylonitrile rubbers used as seals in engine and fuel supply systems of postSoviet aircrafts. The conventional fuel Jet A-1, the synthetic blending component from hydrotreated esters and fatty acids (HEFA) and its blend were interacted with the sample nitrile rubbers. HEFA technology has been approved by ASTM D7655 for use in turbine aircraft engines. The effect was evaluated on the basis of changes in the nitrile r(..)

DOI: 10.21307/tp-2020-031

Published Online: 05-September-2020

EFFECT OF FAIL-SAFE MODE ON THE DAMPING CHARACTERISTICS OF A BYPASS-CONTROLLED SHOCK ABSORBER

Łukasz KONIECZNY

The article provides and discusses results of tests of a bypass-controlled hydraulic shock absorber studied at a test stand (mechanical inductor), making it possible to plot work charts and determine velocity characteristics. Measurements of the shock absorber performance were conducted at different values of velocity and forced travel. The measurements were carried out for two statuses, i.e. for the emergency power failure condition and for normal setting. The results thus obtained can be used (..)

DOI: 10.21307/tp-2020-032

Published Online: 05-September-2020

INFLUENCE OF MOTORIZATION DEVELOPMENT ON CIVILIZATION DISEASES

Piotr GORZELANCZYK/ Martin JURKOVIC/ Tomas KALINA/ Jarmila SOSEDOVA/ Vladimir LUPTAK

The health style of the population has deteriorated in the last 10 years, given the possibilities offered by an increasingly advanced civilization. The paper attempts to find the answer to the question whether the development of motorization has an effect on civilization diseases. To this end, the paper began with an analysis of the registered number of means of transport in Poland and an analysis of the number of cases of malignant and respiratory tract cancers. Then, the focus was on the analy(..)

DOI: 10.21307/tp-2020-033

Published Online: 05-September-2020

ALUMINUM ALLOY WELDING IN AUTOMOTIVE INDUSTRY

Bożena SZCZUCKA-LASOTA/ Tomasz WĘGRZYN/ Adam JUREK

The paper presents the possibilities of using light alloy components in vehicle construction. Material 6082 was chosen for use in responsible structural components. The structure and strength parameters of the material in the delivery state were tested. Tested material parameters were compared with normative requirements. The purpose of the paper is to check the mechanical properties of aluminum alloy welded joints by various processes and parameters. Until now, welding of 6082 alloy did not giv(..)

DOI: 10.21307/tp-2020-034

Published Online: 05-September-2020

THREE- AND FOUR-MASS MODELS FOR VEHICLE FRONT CRUMPLE ZONE

Vaidas LUKOŠEVIČIUS/ Robertas KERŠYS/ Artūras KERŠYS/ Rolandas MAKARAS/ Janina JABLONSKYT

The article deals with the applicability of the three- and four-mass crumple zone models by optimization of the vehicle front crumple zone in case of a collision. The possibilities for integrating the requirements for individual crumple zones are discussed. The crumple model for special crumple zone elements has been proposed. Optimum parameter limits for the deformable elements have been identified, and complex influence of the damping elements used has been demonstrated. The need for adjustmen(..)

DOI: 10.21307/tp-2020-035

Published Online: 05-September-2020

EXPERIMENTAL AND THEORETICAL EVALUATION OF SIDE TAMPING METHOD FOR BALLASTED RAILWAY TRACK MAINTENANCE

Michal PRZYBYLOWICZ/ Mykola SYSYN/ Vitalii KOVALCHUK/ Olga NABOCHENKO/ Bogdan PARNETA

Ballast layer is the most weak element of railway track that causes track geometry deterioration. At the same time, it is subjected to intensive particle breakage during the corrective tamping. This causes high maintenance costs of ballasted track. The present paper is devoted to the study of tamping methods. The present machine tamping methods are considered and compared. The possible influence of the tamping technology on the ballast-related maintenance costs is analyzed. The side tamping tech(..)

DOI: 10.21307/tp-2020-036

Published Online: 05-September-2020

USE OF SURFACE WORKING FOR IMPROVING THE WORKING LIFE OF PISTON VALVES OF COMBUSTION ENGINES

Krzysztof FILIPOWICZ/ Mariusz KUCZAJ/ Stanisław MIKUŁA

This paper deals with the issue of operating damage of combustion engine valves. It presents an innovative way and construction of a tool for strengthening piston engine valves by way of surface working. It presents the concept of machines for comprehensive surface working and for profiling the faces of combustion engine valves. It also includes the discussion of the methodology of working.

DOI: 10.21307/tp-2020-037

Published Online: 05-September-2020

FACTORS THAT INFLUENCE LOGISTICS DECISION MAKING IN THE SUPPLY CHAIN OF THE AUTOMOTIVE INDUSTRY

Sebastjan ŠKERLIČ

Logistics activities are present in different business functions, which is why unified decision making in logistics has a significant effect on the organization of logistics processes in companies. Scientific literature highlights various aspects of logistics decision making, but so far, no survey has been conducted that can accurately illustrate the effect of centralized logistics and the effect of the level of logistics knowledge of employees from other departments on unified decision making i(..)

DOI: 10.21307/tp-2020-038

Published Online: 05-September-2020

SURVEY METHOD IMPROVEMENT OF URBAN PASSENGER TRANSPORT WORKS

Oleg NIKIFOROV/ Kirill SAFRONOV/ Sergey MOCHALIN/ Yuliya KOLEBER

The article presents the implementation in the Omsk region of the project "Safe and high-quality roads," which is currently being implemented in various regions of Russia. Studies included the development and implementation of programs for the development of roads and municipalities, bringing the urban agglomeration network into a normative transport and operational state, eliminating the congestion of the urban agglomeration road network, including by transferring passenger traffic to public tr(..)

DOI: 10.21307/tp-2020-039

Published Online: 05-September-2020

INCREASING THE RESOURCE OF MILLING CUTTERS USED TO PROCESS THE LOCOMOTIVE WHEELSETS. PART 2: STUDY OF STRESSED-DEFORMED STATE

Aleksander SŁADKOWSKI/ Yuriy PROYDAK/ Vladislav RUBAN

The article deals with the stress-strain state of the cutters used in the mills of a new design for the restoration of the working surfaces of locomotive wheels. A comparative analysis of stresses in the cutters was carried out using the finite element method, which showed a significant advantage of the new technical solution, the novelty of which is confirmed by the patent.

DOI: 10.21307/tp-2020-040

Published Online: 05-September-2020

LIFE CYCLE ASSESSMENT OF FUEL CELLS ELECTRIC VEHICLES

Ivan EVTIMOV/ Rosen IVANOV/ Hristo STANCHEV/ Georgi KADIKYANOV/ Gergana STANEVA

In recent years, regarding the influence of the production processes and vehicles on the environment, new technical solutions for reducing air pollutions have been studied and developed. One of the new constructions is fuel cell electric vehicle (FCEV). The production and running conditions of the vehicles are specific in different countries. Hence, a study of these conditions and fuel production process is needed. In this paper, a study of the FCEV efficiency, at different producing technologie(..)

DOI: 10.21307/tp-2020-041

Published Online: 05-September-2020

APPLICATION OF EYE-TRACKING TECHNOLOGY AS A DIAGNOSTIC TOOL FOR ASSESSING FLIGHT OPERATORS. PART 1: ANALISE OF FLIGHT OPERATOR'S ATTENTION DISTRIBUTION AND SWITCHING USING EYE-TRACKING

Olga ARINICHEVA/ Natalia LEBEDEVA/ Aleksei MALISHEVSKII

The paper presents the results of an experiment devoted to studying attention distribution and switching using eye-tracking technology. The experiment was conducted in two stages. At the first stage (year 2016), 48 students majoring in air traffic control were examined. At the second stage (year 2017), 43 students studying to become civil aviation pilots were involved. Correlation analysis methods and Pearson’s chi-squared test were used.

DOI: 10.21307/tp-2020-042

Published Online: 05-September-2020

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