Szabolcs Fischer

Széchenyi István University, Gyor · Department of Transport Infrastructure and Water Resources Engineering

In this article the author reports the measurements made by traction measuring car of Railway Engineering and Metrological Service Centre (REMSC) in the research and development work " Complex investigation of reduction possibilities of additional costs due to speed restrictions on electric traction railway lines ". As results it can be stated that...

This paper summarizes the results of a R&D work in 2014. Fivedifferent types of andesite railway ballast material with differentLARB (%) (Los Angeles abrasion) as well as MDERB (%)(Micro-Deval abrasion) values were investigated in laboratorywith pulsating test which models the real condition muchbetter (the used parameters were determined accordanc...

Purpose. The aim was to compare behavior of polymer-composite fishplated and control steel fishplated (type GTI and MTH-P) glued insulated rail joints in railway track. Methodology. After laboratory tests (shear tests of glue materials, 3-point-bending tests, axial pull tests), as well as field inspections, trial polymer-composite and control (stee...

In this paper the authors detail the possibilities of modelling of finite element method (FEM) of glued insulated rail joints which are applied in railway tracks with continuously welded rails (CWR). A lot of laboratory tests (static and dynamic 3-point bending tests, axial pulling tests) were executed on glued insulated rail joints, the specimens...

This article summarizes the research results related to our own conducted extensive laboratory tests of polymer composite and steel fishplated glued insulated rail joints (GIRJs), namely axial tensile tests as well as vertical static and dynamic tests. The investigation dealt with the examination of GIRJs assembled with steel and special glass-fibe...

The article deals with examining tramway tracks' superstructures of tramway line No. 1 in Budapest (capital of Hungary). Since the first appearance of tramways, several technological upgrades have been used to serve the traveling public's needs as efficiently as possible. Several types of superstructure systems can be differentiated in the case of...

Background This article deals with a unique topic related to railway infrastructure, civil and geotechnical engineering, and modern materials. In the past 20–30 years, more and more synthetic materials have been applied in engineering and everyday life. Geogrid and geotextile products are adequate for substituting lacking abilities of the soils, an...

This paper summarizes the results of laboratory tests in which the authors investigated the effects of extremely high vertical load to a railway track segment. The segment consisted of a cut concrete sleeper (contact area: 290×390 mm) with a pair of direct-elastic rail fasteners; the sleeper pieces had a standard, full height; the structure had a t...

This research aims to investigate the adaptability of a measurement system or a process in determining the parameters of batteries. Methods are suggested for different applications, and properties gained by these measurements are specified. Deformations of lithium polymer batteries measured by various methodologies are also analyzed in detail. Chan...

This paper was written concerning a test section with geogrid-reinforced railway ballast based on field tests. I aim to introduce the variation of the alignment track geometry parameter taking into consideration the geogrid reinforcement. The main advantage of the ballast reinforcement with geosynthetic inclusions is the reduction of the longitudin...

In this work, considering the MÁV’s (i.e., the Hungarian Railways) five small and five high-traffic railway lines, the statistical distribution and change of the track gauge parameter were analyzed, under a ten year, on time-series analysis, related to straight track sections. The analysed data, were bottom track gauge measurements, of the FMK-004...

This current paper deals with the investigation of the variation of the hardness of the rail steel material in the heat-affected zone (HAZ) of a rail joint made by thermit welding (TW). The tested rail is a normal R260 type rail steel category; its production date is 1977, the rolling mill was Diosgyor (Hungary), rail profile is MÁV 48.5. This rail...

Determining the deterioration of superstructure systems is technical and has national economic importance. In addition to geometric deterioration, it is also very difficult to monitor the changes in the dynamic characteristics of the vehicles. The data from geometric and dynamic measurements should be properly analyzed to determine the deterioratio...

The Concrete Canvas (CC) material, is a promising material for application in many civil engineering fields, such as, water construction, pipelining, slope protection, military applications, etc. The authors believe that this material has more potential and could be helpful in infrastructure applications. The infrastructure design requirements are...

The relatively high maintenance costs of the ballast track are related to the short lifecycle of the ballast layer. The current vertical ballast tamping technology (e.g., Plasser & Theurer, Matisa, etc.) causes high ballast destruction and is neither applicable for unconventional sleepers’ designs nor slab tracks. The side tamping method presents a...

There is a class of tasks that requires considering the dynamics not only for rolling stock but also for the response of the railway track. One of the directions of railway transport development, which encourages the transition to fundamentally new dynamic models of the railway track, is undoubtedly an increase in traffic speed. To solve such probl...

A közúti vasúti közlekedés megjelenése óta törekednek a szakemberek a technológiai fejlődésre, annak érdekében, hogy a pálya építési, fenntartási, üzemeltetési tevékenységek minél korszerűb-bek legyenek, valamint az utazóközönség igényei minél hatékonyabban ki legyenek szolgálva. Mind-ezek ellenére a közúti vasúti pályák felépítmény-szerkezeteinek...

Purpose. To determine the relationship between water content of continuously graded granular supplementary layers for railway substructure and their inner shear resistance and load bearing capacity. Methodology. Four different samples were produced as standard granular products from andesite. Two of them are common base courses for road constructio...

The present paper deals with the experimental investigation of interlocking effect of crushed stone ballast material, assessing it as the relationship with the residual and dynamic stresses under the ballast layer during laboratory dynamic tests with the consideration of different boundary conditions. The laboratory experiments were executed with a...

This paper presents a short literature review related to the fragmentation of the railway crushed ballast particles. With the help of the processed articles with the main topic of discrete element modelling (DEM) we aim to provide some insight into the international achievements and forward progress of the subject. Rock materials as granular elemen...

The construction and maintenance of a railway track is an expensive process. Therefore, nowadays, except for advanced countries, considerable attention must be paid to apply the optimal maintenance of railway lines. In Hungary, until 2020 nearly 11% of railway tracks were renewed and rehabilitated from EU support, which means millions of Euros, i.e...

The present study seeks to explore the concept of "smart economy" through the definition of the smart city. It also presents smart city subsystems and the smart city model. It focuses on smart and creative startups within the smart city model. The research examines medium-sized cities in the Visegrád countries (Czech Republic, Slovakia, Poland, Hun...

Purpose. The authors' aim is to demonstrate their results of analysis of deterioration of tramway tracks' geometry. Methodology. This article is a start of a PhD research. At first, the superstructure systems and the used instrument were summarized, after that the examination of running track, tramway stops, crossings and turnouts. Findings. The au...

Since the appearance of urban railways, a number of technological novelties have been implemented in order to meet the demand of the passengers. In case of tramways, we differentiate between 7 different superstructure systems in Hungary, that are being installed differently in case of each project, depending on factors such as the installation site...

This paper is the continuation of the previous article published in Sínek Világa 2019/5, the title of this article is „Measurement of degradation of railway ballast particles in laboratory conditions” [1]. Here the authors presented their latest measurement results and a new researching line involving CT scans. Among other things, the article raise...

Purpose. It is a very important issue to be able to determine the accurate particle degradation of railway ballast material. There are three different – but connecting – methodology for that: 1) full scale field tests, 2) full scale or reduced scale laboratory tests, 3) computer modelling, mainly with discrete element method (DEM). Options no. 1 an...

Purpose. The authors’ aim is to summarize the results of relevant international publications and, based on these, to give a comprehensive review about the modern ballasted tracks’ substructure. Methodology. This article is a start of a PhD research, which means it was proceeded by a secondary research. At first, the substructure and its protection...

This paper is the continuation of the previous article published in Sínek Világa journal 2019/1 issue, the title of this article is „Breakage tests of railway ballast stone material with using of laboratory dynamic pulsating” [1]. The goal of the authors was to demonstrate more detailed the degradation process (breakage and wear) of the railway bal...

This paper contains some conclusions from the author’s research that the authors experienced during their individual fatigue laboratory tests. The most railway lines in the world have so called traditional superstructure (ballasted tracks). In the past few years there were a lot of railway rehabilitation projects in Hungary, as well as abroad. The...

Link: https://akademiai.com/doi/pdf/10.1556/606.2019.14.2.1 This paper summarizes the authors’ up-to-date results in the research topic of railway ballast particles’ breakage test with individual laboratory test. In the past few years there were a lot of railway rehabilitation and maintenance project in Hungary, as well as abroad. The largest part...

Purpose. The authors’ aim is to evaluate more precisely the deterioration process of glued insulated rail joints with polimer-composite and steel fishplates regarding to own laboratory tests. Methodology. The laboratory tests were executed by three-point static and three-point dynamic (fatigue) bending tests’ measurement results related to glued in...

Purpose. The most railway lines in the world have so called traditional ballasted superstructure. The authors think that it is important to learn about the process of ballast degradation. There are only two types of standardized laboratory test methods in the EU to assess railway ballast particle degradation and describe the rock physic characteris...

This article sums up the recent results in the topic of investigation of special procedure for evaluation railway ballast particles’ degradation. World’s railways are mainly conventional ballasted tracks. Railway ballast is the largest ‘mass’ in the superstructure. Enough quantity of railway ballast in adequate quality is needed to construct or mai...

A hézagnélküli vasúti pályák problémás pontjai a ragasztott-szigetelt sínillesztések. Gyakori a "meghibásodásuk" egyrészt pályageometriai hibák (lokális fekszinthibák) kialakulása, másrészt szerkezeti problémák (pl. elektromos hevederzárlatok) miatt, amelyek a vasúti jelző-és biztosítóberendezések megfelelő működését befolyásolják. Cikkünkben a Kel...

This paper contains some conclusions from the author’s research that the authors experienced during their individual fatigue laboratory tests. The most railway lines in the world have so called traditional superstructure (ballasted tracks). In the past few years there were a lot of railway rehabilitation project in Hungary, as well as abroad. The a...

This paper demonstrates the results in the research topic of the railway ballast particles’ breakage test with unique laboratory test. The most railway lines in the world have so called traditional superstructure (ballasted tracks). In the past few years there were a lot of railway rehabilitation projects in Hungary, as well as abroad. Nowadays can...

In this paper the authors partially summarize the results of a research on glued insulated rail joints with fiber-glass reinforced plastic fishplates (brand: Apatech) related to own executed laboratory tests. The goal of the research is to investigate the application of this new type of glued insulated rail joint where the fishplates are manufactur...

In this paper the authors are representing a special laboratory fatigue degradation test of railway ballast materials. With this kind of test, the deterioration process of railway ballast material can be considered more realistic and precisely. The test doesn’t consider the particle breakage due to hand-made and machine-made tamping, but it can sim...

In this paper the authors are presenting the results of a research of glued insulated rail joints with special reinforced fiber-glass Russian-made plastic fishplates (brand: Apatech). After laboratory tests, as well as field inspections, trial polymer composite and control (steel) fishplated glued insulated rail joints were built into railway track...

Purpose. There are specific, standardized laboratory test methods to assess railway ballast particle degradation; they are the Los Angeles (EN 1097-2) and the Micro-Deval abrasion (EN 1097-1) tests. These testing methods can't take into consideration the real railway stress-strain circumstances of ballast materials, and they particles. In this pape...

Purpose. There are special, standardized laboratory test methods to evaluate railway ballast particle breakage; they are the Los Angeles and the Micro-Deval abrasion test. The authors opine that these methods aren’t the most adequate methods to assess the real ballast particle degradation because in reality never occurs these kinds of stresses and...