“Developing a numerical model for simulating noise levels and psychoacoustic attributes of sound in the vicinity of rail infrastructure” (PPN/BDE/2020/1/00009) funded by the Polish National Agency for Academic Exchange under the bilateral scientist exchange programme with the Federal Republic of Germany.
Project duration: 2021-2022
Project manager (on the part of the Poznań University of Technology): dr inż. Paweł Komorski
The aim of the project is to develop a model for simulating noise levels and psychoacoustic attributes of sound in the vicinity of rail infrastructure. The model shall include the representation of the propagation of noise of the wheel rolling on the rail, which is the main component of the noise generated by moving urban railway vehicles.
“DESTINATE: Decision supporting tools for implementation of cost-efficient railway noise abatement measures” (H2020-S2RJU-OC-2015-01-2), ), co-funded by the European Commission under the Shift2Rail initiative.
Project duration: 2016-2018
Project manager (on the part of the Poznań University of Technology): dr hab. inż. Bartosz Firlik, Associate Professor
The DESTINATE project looked to develop new tools and methodologies for simulating railway noise and analysing the costs and benefits of external and internal noise abatement measures in railway vehicles. Structural and airborne sources were characterised in order to accurately predict the noise level, which constituted input data for simulation models for predicting noise levels. The calculated internal and external noise levels were auralised and visualised to evaluate the quality of sound and acoustic comfort, as well as the usefulness of possible technologies at the vehicle design stage. This way, human perception can be taken into account already at the design stage of the acoustic conditions of the vehicle and can also influence decisions on the costs of various design options, which constitutes a crucial project parameter. The DESTINATE project contributed to further development of the cost-effectiveness prediction by creating the foundation for tools supporting decision-making in terms of vibrations and noise
“Development of the technology for reducing the cost of tramway wheel use by way of gradually putting an innovative universal wheel into use” (POIR.01.01.01-00-1920/15) co-financed by the National Centre for Research and Development within the scope of the Smart Growth Operational Programme 2014-2020, priority axis: Support for R&D activity of enterprises Measure 1.1: R&D projects of enterprises, Sub-Measure 1.1.1: Industrial research and development work implemented by enterprises.
Project duration: 2016-2019
Project manager (on the part of the Poznań University of Technology): dr hab. inż. Bartosz Firlik, Associate Professor
The main aim of the project was the development of technology making it possible to reduce the cost of tramway operation by putting an innovative universal wheel into use. The project results are intended for entities using urban rolling stock, regardless of their size, the number of tramways in operation, wheel types, pace of rolling stock renovation, configuration of the rail network, and the complexity of technical equipment. The mode of implementation takes into account the wheel renovation method and the wheel type chosen by the user. The project made it possible to reduce the cost of tramway repairs within the area of running gear components, decrease the diversity of spare part assortment, and unify materials and the spare parts.
“Identification and modelling of non-linear phenomena in the contact area of the friction lining with the brake disc of a railway vehicle in the context of stabilizing the instantaneous coefficient of friction” (LIDER/022/359/L-5/13/NCBR/2014), financed by the National Centre for Research and Development under the LIDER programme (support for the development of academic staff, in particular enhancing their competencies in planning and managing research on their own, as well as leading a research team by implementing research projects aimed at direct application).
Project duration: 2015-2018
Project manager: dr hab. inż. Wojciech Sawczuk
The primary scientific goal of the project was the identification and modelling of major non-linear phenomena taking place in the contact area of the brake pad with the brake disc. The project involved research in the following fields:
- Contact mechanics (pressure distribution of the between brake pad and the brake disk).
- Material research (an attempt to slightly improve the characteristics of the current friction pair combination).
- Tribology (the key to understanding the phenomena occurring in the contact area of the brake disk and brake pad pair).
- Dynamics (behaviour of the lever mechanism with the brake pad installed).
- Noise (analysed with respect to the mechanism of its generation and propagation into the environment or vehicle interior when the brake is operating).
- Vibration (a phenomenon preceding the generated noise).
The project gave rise to two patents:
P.418361 Tarcza hamulcowa [Brake disk]. Wojciech Sawczuk (Politechnika Poznańska),
P.408529 Prowadnik równoległości hamulca pojazdów szynowych [Guide for ensuring parallelism of the brake pad friction lining for railway vehicles], Wojciech Sawczuk (Politechnika Poznańska), Sławomir Kołodziejski (AKSA Poland Hydraulika).
“MFB – a family of medium-floor tramway bogies” (INNOTECH-K3/IN3/4/225774/NCBR/14), co-funded by the National Centre for Research and Development within the scope of the INNOTECH programme (support for science and enterprises with implementing innovative undertakings from various fields of science and branches of industry), co-funded by the European Union from the European Regional Development Fund under the Innovative Economy Operational Programme.
Project leader: Modertrans Poznań sp. z o.o.
Project duration: 2014-2017
Project manager (on the part of the Poznań University of Technology): dr hab. inż. Bartosz Firlik, Associate Professor
The goal of the project carried out by the Consortium comprised of Modertrans Poznań Sp. z o.o. and the Poznań University of Technology was to introduce a new generation of products to the Consortium Leader’s (Modertrans) range, which would be innovative with respect to the current state-of-the-art in terms of technological and functional characteristics. The new product developed in the course of R&D work was a family of medium-floor bogies for tramways, which – after being put into use – has contributed to increasing the efficiency, safety, and comfort of urban and suburban transport operation across the world.
“Innovative urban tramway” (UOD-DEM-1-281/00), co-financed by the National Centre for Research and Development within the scope of the DEMONSTRATOR+ programme (support for scientific research and development work on a demonstration scale), co-financed by the European Union from the European Regional Development Fund under the Innovative Economy Operational Programme.
Project leader: Modertrans Poznań sp. z o.o.
Project duration: 2014-2016
Project manager (on the part of the Poznań University of Technology): dr hab. inż. Bartosz Firlik, Associate Professor
The goal was to design and create a prototype of a new urban tramway – Moderus Gamma LF 01 AC – a fully low-floor tramway with unique parameters of operation on the European scale (low noise level, low-floor without any inclinations throughout the vehicle, and high comfort of travel, among other features).
- “Identification and modelling of non-linear phenomena in the contact area of the wheel with the rail with the aim of developing a new profile for the tramway wheel”, (LIDER/20/521/L-4/12/NCBR/2013) financed by the National Centre for Research and Development under the LIDER programme (support for the development of academic staff, in particular enhancing their competencies in planning and managing research on their own, as well as leading a research team by implementing research projects aimed at direct application).
Project duration: 2014-2017
Project manager: dr hab. inż. Bartosz Firlik, Associate Professor
The aim of the project was to optimise the tramway wheel profile to decrease the dynamic effect of the wheel on the track, decrease wheel and track wear, and improve the running characteristics of the vehicle (comfort of travel and safety against derailment, among others). The project comprised both in-service tests aiming to identify non-linear phenomena between the wheel and the rail, as well as numerical analyses of the vehicle’s dynamic behaviour on a worn track – with the use of non-linear mathematical models. The project was completed in October 2017, and the obtained results were presented during a number of conferences, as well as railway and urban rail transport specialist meetings, both abroad and in Poland. The new tramway wheel profiles have been implemented in lathes used by the MPK Poznań and MPK-Łódź urban rail transport operators.
“Tramway bogie design with two-stage suspension for the 1,000 mm track with alternating or direct current motors” (KBN nr 52-069/2009/GR), financed by the State Committee for Scientific Research.
Project duration: 2009-2011
Project manager: dr hab. inż. Jerzy Kwaśnikowski
The goal of the project was to design, create a prototype of, carry out comprehensive implementation research, and put into production a new type of tramway driving bogie, type MT-03H/1000, for the 1,000 mm track width, for tramway types 105N and 805N, currently under modernisation in Poland. Aside from the typical secondary suspension, the new bogie design featured a primary suspension, innovative in terms of its functionality. This made it possible to decrease the dynamic load of the bogie and reduce forces in the contact area of the wheel and the rail, which increased the ride safety and passenger comfort, and reduced noise emission.
“Feasibility analysis of the application of vibroacoustic processes for evaluating the condition of friction elements of the railway disc brake” (N N504 644840), financed by the National Science Centre.
Project duration: 2011-2014
Project manager: dr hab. inż. Wojciech Sawczuk
The project aimed to analyse the feasibility of the application of vibroacoustic processes for evaluating the condition of friction elements of the railway disc brake. In order to achieve the project goal, performance of the following research tasks was required: development of research methods for the evaluation of the wear of friction elements of the disc brake, mainly based on WA signals, verification tests, and formulation of the requirements for the prototype diagnostics system for evaluating the wear of friction elements of the railway disc brake.
“Evaluation and modelling of external and internal noise in urban transport vehicles” (SCSR no. 52-101/2010/GR), financed by the State Committee for Scientific Research.
Project manager: dr hab. inż. Małgorzata Orczyk
“Evaluation of the acoustic environment in the vicinity of the A2 highway along the Komorniki-Krzesiny section” (supervisor research grant of the SCSR no. 0596/T02/2006/30), financed by the State Committee for Scientific Research.
Period of implementation: 2006-2007
Project manager: prof. dr hab. inż. Franciszek Tomaszewski
“Identification and modelling of the phenomena occurring during a combustion engine work cycle based on the vibration signal with reference to diagnostics” (supervisor research grant of the SCSR no. 1824/T12/2005/29), financed by the State Committee for Scientific Research.
Period of implementation: 2005-2006
Project manager: prof. dr hab. inż. Franciszek Tomaszewski
“Use of selected characteristics of the vibration signal to evaluate valve clearance in a combustion engine” (supervisor research grant of the SCSR no. 1630/T12/2004/27), financed by the State Committee for Scientific Research.
Period of implementation: 2004-2005
Project manager: prof. dr hab. inż. Franciszek Tomaszewski
“Development of the diagnostics, reliability, and safety status monitoring and prediction system in the operation of railway vehicle combustion engines” (SCSR no. 9T12D02512), financed by the State Committee for Scientific Research.
Project manager: prof. dr hab. inż. Franciszek Tomaszewski