Rafal Burdzik

Rafal Burdzik
Silesian University of Technology · Faculty of Transport and Aviation Engineering

PhD, DSc, Professor @SUT

About

129
Publications
89,566
Reads
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1,022
Citations
Introduction
noise and vibration in transport engineering, civil engineering, mechanical engineering, vibroacoustics, e-mobility
Additional affiliations
January 2016 - present
Faculty of Transport
Position
  • Professor
December 2006 - December 2015
Silesian University of Technology
Position
  • Professor (Assistant)

Publications

Publications (129)
Article
Full-text available
The purpose of this research paper is to present the application of the developed sound method as a supporting tool to deal with railway traffic flow control. It is found that controlling railway line occupancy is the main issue associated with railway traffic flow. For this purpose, the line occupancy control based on a sound method has been devel...
Article
The problem of distinguishing combined failures in technical diagnostics is still a very difficult research issue and a scientific challenge. This paper presents an investigation into a comprehensive diagnostic system for a vehicle suspension based on an advanced algorithm for multidimensional analysis of the vibration accelerations and a neural cl...
Article
Full-text available
The purpose of this research was to analyze the possibilities for the application of vibration signals in real-time train and track control. Proper experiments must be performed for the validation of the methods. Research on vibration in the context of transport must entail many of the different nonlinear dynamic forces that may occur while driving...
Article
Full-text available
The paper presents how an important aspect of introducing new machines, especially in the mining industry, is testing a prototype under laboratory conditions. For this purpose, advanced methods of analyzing the vibrations of a drive system equipped with an innovative prototype of a flexible torsion clutch are presented. The main goal is to present...
Chapter
The paper presents research on application of pass-band step filtering method for identification the vibration-acoustic signature of a moving train. Authors present results of applying new methods of filtering vibration-acoustic signatures. The signal comb filtering was applied and the RMS in the time course and the sum of the FFT amplitudes in the...
Article
Full-text available
This article provides a discussion of the results of studies on the original system condition monitoring of a three-stage transmission with a bevel–cylindrical–planetary configuration installed in an experimental scraper conveyor. Due to the high vibroactivity of gear transmissions operating under the impact of a scraper conveyor’s chain drive, the...
Article
Full-text available
This article presents the results of studies on the impact of acoustic waves on geophones and microphones used to measure airblasts carried out in a reverberation chamber. During the tests, a number of test signals were generated, of which two are presented in this article: frequency-modulated sine (sine sweep) waves in the 30-300 Hz range, and the...
Chapter
The paper presents the results of preliminary rail vibration tests generated by the passage of a rail vehicle. As part of the study, vibrations were recorded in three orthogonal axes, analyzing longitudinal, transversal and vertical vibrations. The results show time waveforms, signal spectra and time-frequency distributions. On the basis of the ana...
Chapter
The article elaborates upon a study of the phenomenon of microsleep in drivers operating means of collective public transport on a regular basis. The microsleep phenomenon has been observed as a rather common one among drivers in general, however, in the case of professional drivers operating public transport lines, this is particularly dangerous....
Chapter
An important element in the communications, providing a high level of requirements for transport by rail, is the need to ensure access to and exchange of data in a strictly defined time regime. Another determinant of is to provide a guarantee of reliability. The achievement of these requirements is possible by evaluating current capabilities and ad...
Chapter
The article presents the results of simulation studies, the aim of which was to compare comparative energy consumption of short and long city buses in terms of assessing the needs for e-mobility. Currently, a number of e-mobility activities are observed, the largest of which has a dynamic change in the bus fleet structure and a significant, defined...
Article
Full-text available
Wheel-rail contact phenomena is problem considered in many scientific manuscripts. Mostly the research is focused on wear, friction and forces analysis. This paper presents research on rail vibration generated due to rail vehicle passage. The problem investigated was the influence of wheel slip phenomena on vibration of rail. The locomotive wheel s...
Article
Full-text available
The human vibration is a multi-disciplinary subject involving many disciplines. A special area in the field of vibration research is the transport system. The paper presents the results of preliminary tests, the aim of which was to analyze the propagation of vibrations forced by the movement of the vehicle floor on persons sitting in a car. During...
Chapter
The vibration of a vehicle treated as an object can be varied in two basic ways. Parametric or structural modifications can be made. Applying parametric modifications is not always possible. Examples are the suspension of motor vehicles. Changing the elasticity factor is limited by the allowable deflection arrow for different loads. Structural modi...
Chapter
Rail vibration signals are complex data represent different phenomena occurred by the wheel-rail contact or others excitations in railway infrastructure. Such signals can be considered as source of interesting information or unwanted degradation or annoying effect. Thus proper analysis of rail vibration signals are important task for the engineerin...
Article
Full-text available
This article presents results of tests of the effect exerted by technical condition of shock absorbers on the braking efficiency of an automotive vehicle. The tests were conducted using Fiat Seicento featuring front shock absorbers which enabled shock-absorbing fluid-level adjustment. The tests comprised measurements conducted on the shock absorber...
Article
Diagnosing the technical condition of shock absorbers installed in automotive suspensions is a difficult issue due to the fact that these are elements of a complex mechanical system containing elastic and damping elements with nonlinear characteristics that degrade during operation. The paper presents the result of testing car with shock absorbers...
Article
Passing rail vehicles generate vibrations and noise. In most studies, these phenomena are analyzed in terms of impact on people, the environment and railway infrastructure. However, using the vibroacoustic methodology, generated vibration and noise signals can be treated as information carriers. The vast majority of publications in the field of vib...
Book
This book provides readers with an overview of recent theories and methods for machinery diagnostics applied to machinery maintenance. Each chapter, accepted after a rigorous peer-review process, reports on a selected, original piece of work discussed at the International Congress on Technical Diagnostic, ICDT2016, held on September 12 – 16, 2016,...
Article
Full-text available
The subject matter of vibrations in railway transport is still an ongoing cognitive issue. In terms of an increase of speed, size, as well as weight of rail vehicles, the scale of effects of vibrations generated when a train moves also grows. However, the authors decided to conduct research and analyze vibrations in a different approach. The articl...
Article
The paper presents novel methodology for multidimensional analysis of strongly nonstationary signals. This methodology contained the identification of working cycles, dedicated signal processing methods for each of identified segments of signal as time, frequency and TFR distributions of each signal segments. It allows to observe influence of incre...
Article
Safety of the railway transport is extremely important issue, thus it has to be supported by numerous of terms. It is not only the legislation and organization or traffic control but also the proper quality of every devices in the railway infrastructure. The paper deals with safety in the rail industry. Companies and producers of railway equipment...
Chapter
The paper presents analysis of vibration transferred on the car body under different damping properties of suspension. Vehicle must be considered as a multi-technical system in which non-linear phenomena occur. The springing elements in modern cars are coil springs with non-linear characteristics, and the damping elements are telescopic shock absor...
Chapter
The paper presents result of non-linearity analysis in the steering gear with various backlash. Due to mechanism of steering gear clearance of gear teeth usually generate non-linearity of movement transfer. Thus, it can be considered as main source of non-linearity in vibration signal. The main goal of the article is to observe how the gear backlas...
Article
Full-text available
The dominant sources of traffic noise, which are linked directly to the vehicle, are dependent on the speed. In terms of speed of 50-120 km/h the dominant source of noise is pneumatic wheels. The aim of the research was chosen to develop a method and experimental determination of the dominant frequency components of noise generated by the car tire....
Article
The paper presents novel method for research on exposure to nonlinear vibration of passenger car suspension as nonlinear dynamical system. Also paper provides a discussion on the results of studies addressing the impact exerted by damping properties of shock absorber on the vibrations being generated. The research was conducted on the car forced to...
Article
The paper addresses the adaptation of linear decimation procedures (LDP) for time-frequency representation (TFR) analysis of non-stationary vibration signals of vehicle suspension. It is extremely important for designing suspensions elements to achieve proper characteristics in term of propagation of vibration. One of the major factors for the iden...
Article
Full-text available
The present paper discusses results of simulation tests conducted using an identified dynamic model of a laboratory station with gear transmissions. The dynamic forces found to be acting in bearing assemblies were assumed as input functions for the purposes of studies of the numerical housing models developed. Using fine-tuned modal housing models...
Article
Full-text available
The article addresses results of analyses of design solutions and materials commonly used in gas springs for hydropneumatic suspension systems. The authors have discussed main advantages resulting from application of such a design solution in passenger car suspension systems. Fundamental correlations defining the parameters characterising a gas spr...
Article
Full-text available
The article addresses a method proposed for comprehensive research of vibration properties dedicated to new structural materials. The method in question comprises three-stage studies, thus enabling the related costs to be reduced on each stage of the process. Subjects of identification and assessment are both the properties and the material structu...
Chapter
Damping vibrations occurring within the car’s suspension is an indispensable phenomenon in suspension operation. The most common damping element used in the suspension is the hydraulic shock absorber. Modern shock absorbers used in the suspensions mostly have nonlinear characteristics and other complex functional properties. The chapter presents re...
Chapter
The paper refers to presentation on 13th International Conference on Dynamical Systems Theory and Applications. The discussion of such wide group of scientists allowed to extend the paper and presents some new results. The processes conducted on marshalling yard generate a lot of movement with many direction and speed changes which generate differe...
Article
Full-text available
Crossing signaling systems used for securing the intersection traffic at the level of roads with railways are mostly triggered by rail vehicles coming towards them using sensors working in the impact zones. Modern crossing signaling detection devices due to their unification and savings in production are used not only in crossing signaling but also...
Article
Full-text available
The article presents the model of the crankshaft taking into account the coupling of bending and torsional vibrations. In engineering practice the simplification which is omitting this phenomenon is commonly used. Authors using more complicated model show the influence of bending torsional coupling on the frequency structure of the crank system.At...
Article
Full-text available
Autogenous laser welding of 0.8 mm thick butt joints of car body electro-galvanized steel sheet DC04 was investigated. The Yb:YAG disk laser TruDisk 3302 with the beam spot diameter of 200 μm was used. The effect of laser welding parameters and technological conditions on weld shape, penetration depth, process stability, microstructure and mechanic...
Article
The paper presents results of a vibroacoustic signal analysis of the unsprung mass in a car actuated by harmonic kinematic vibrations. A passenger car with a hydropneumatic suspension system and standard tires was examined. Different tire pressures were used during the experiments. The authors applied the short time Fourier transform method with su...
Article
This paper presents an approach to modeling the slippage of a robot's rubber tracks moving on a non-deformable surface. A single horizontal deflection of a one-track lug is considered. The issue is modeled by FEM and verified by track lug deflection measurement and trajectory motion analysis. As a measurement device, a vision system is developed an...
Book
Full-text available
Podręcznik dla zawodów elektromechanik pojazdów samochodowych oraz technik pojazdów samochodowych, część 1. Ma czytelną strukturę (znaną już czytelnikom korzystającym z całej serii samochodowej Nowej Ery), a wynikającą z logiki przygotowania i przeprowadzania procesów diagnostycznych. Do najważniejszych zalet książki zalicza się zrozumiały język p...
Article
Full-text available
The article presents selected components of the prototype of the integrated system of supporting information management in passenger traffic (the polish acronym of the system is ZSIKRP Demonstrator+). The system is equipped with significantly expanded range of offered functionality, which corresponds to the current demands of the market. Additional...
Article
This paper addresses a study undertaken to develop spatial numerical models of a piston, a piston pin and a connecting rod with reference to real components of a combustion engine crank system. The numerical studies conducted comprised an analysis of how the mechanical strength of piston pins was influenced depending on the change in their inner sh...
Article
The paper presents concept of engine vibration monitoring system dedicated for all kind means of transport. Based on nature of vibration phenomena the scope of the possibilities of usage of vibration become very wide. The procedure of vibration measurements allow to conduct constant registration without invasion into construction into mechanism. Th...
Article
Full-text available
The article provides a discussion concerning the potential for applying advanced methods of vibroacoustic signal processing for the purposes of identification of a combustion engine state. It contains example results of vibration measurements on the passenger car combustion engine in three directions. The research was conducted on stopping vehicle,...
Article
This paper presents results of simulation of visco-elastic dampers based on the model of the vehicle shock absorber. The aim of this research is to determine the parameters of dynamic models of special dampers applicable in advanced vehicle suspension systems. One of the key issues of modeling is to determine the acceptable degree of the simplifica...
Article
Full-text available
The paper presented results of the research on process of production of highly important element of passenger car. The main object of the research was influence of production process and material factors on fatigue strength of tubular stabilizer bar. The scope of the research included the stabilizer bar hot bent at the bending table, hardened in oi...
Article
Full-text available
In the paper, results of investigations on coke dust, anthracite dust and coal flotation concentrate application in the technology of copper flash smelting slag processing are presented. The results show that the selected reducers can be used as substitutes for the conventional coke.
Conference Paper
Full-text available
Growing customer requirements for comfort of vehicles more often become refer to vibrations that affect the people in transport. At the same time each car put into service must has the appropriate parameters traction to the road surface responsible for the safety. Due to the nature of the vibration transmitted to the vehicle body vibration requirem...
Article
Full-text available
The paper presents results of the active diagnostics experiments on influence of fatigue metal damage of the inner race of bearing and unbalance of rotating masses on vibration generated by the machine. Analysis of vibration related phenomena is a solution commonly applied in Structural Health Monitoring (SHM) systems. The application of vibroacous...
Article
The paper presents results of investigation of car suspension system dynamics. In this research the multibody (Multi Body System - MBS) system software MSC.Adams was used. ADAMS software (MSC.Software) is a commercial software to build a multibody structural models. Modular design allows for the usage of applications with different focuses, such as...
Article
Full-text available
The article addresses the methodology and the results of studies of vibroacoustic phenomena generated by tram vehicles. While a tram was running at various speeds, both the noise level and surface vibrations were recorded simultaneously. These quantities determine the overall impact of tram cars on their environment. The research assumptions made e...
Article
The paper presents possibilities of usage of innovative constructions in special vehicles for absorbing of vibrations. The regular vehicles, as passenger cars, have many solutions of suspensions. Depending on purpose of the car it can be generally grouped for soft suspensions with destination for passenger, family cars and hard suspensions for spor...
Article
The paper presents results of vibro-acoustic signal analysis (acceleration of the unsprung mass of car actuated to vibration by harmonic, kinematic vibration). The passenger car Citroen BX 14 TGE with hydropneumatic suspension and standard tire (165/70 R14 nominally pressure 1.8 [bar]) was researched. The range of research has included tire pressur...
Article
The paper presents the results of visco-elastic dampers. Their aim was to determine the parameters of dynamic models. A key issue in modeling is to determine the acceptable degree of simplification. According to the authors diagnostic models must take into account characteristics such as nonlinearity and asymmetry damping characteristics. Also, it...