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Appendix 3 (English version)
AUTOPRESENTATION
Jakub Łagodziński, PhD
Institute of Turbomachinery
Division of Diagnostics And Automatics of Turbomachinery
219/223 Wólczanska St.
90-924 Łódź
Łódź, April 2019
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Contents
I. Name and surname .................................................................................................. 3
II. Diplomas and scientific degrees ............................................................................. 3
III. Course of employment – information about past and current employments in
scientific units .......................................................................................................... 3
IV. Presentation of the scientific achievement ............................................................ 3
A) Title of scientific achievement .................................................................................... 3
B) Description of a monograph as the scientific achievement ......................................... 3
1. Overview of the scientific aims of the above-mentioned works and the results obtained ......................................................................................................................... 4
V. Overview of other scientific and research accomplishments ............................. 13
A) List of other (not listed in point 4b) published scientific works and indicators of
scientific achievements ............................................................................................ 13
1. Monograph, chapters in books, PhD dissertation ................................................13
2. List of other papers (not included in the scientific achievement listed in point 4) published in international scientific journals from the database of Journal Citation Reports (JCR) ...............................................................................................................13
3. List of other papers (not included in the scientific achievement listed in point 4) published in the scientific journals beyond the database of Journal Citation Reports (JCR) 17
4. List of conference reports ...................................................................................20
5. Summary of publication achievements ................................................................21
VI. Didactics and science popularization achievements .......................................... 22
A) International and national research projects management and participation ............ 22
B) Implemented original design, construction and technological achievements ............ 24
C) Awards and distinctions ........................................................................................... 24
D) Reviewing of manuscripts for international and national scientific journals ............... 24
E) Expertise or other studies made to order .................................................................. 25
F) Supervising of PhD students as a supportive supervisor .......................................... 26
G) Achievements in didactics and popularization of science ......................................... 26
VII. Summary of scientific, engineering and other accomplishments ..................... 27
3
I. Name and surname
Jakub Łagodziński
II. Diplomas and scientific degrees
2006 – M.Sc. diploma, Faculty of Mechanical Engineering, Lodz University of
Technology, course of Mechanical Engineering, specialization: Power Systems,
Machines and Devices. Final thesis entitled: „Emergency boiler feed pump of
360MW power plant”. Supervisor: Ph.D. Jerzy Staniszewski.
.2009 – Ph.D. in the discipline of Machine Design and Operation, Faculty of
Mechanical Engineering, Lodz University of Technology. Title of the Ph.D.
dissertation: “The unconventional mechanical designs aided by the magnetic
field”. Supervisor: prof. Dorota Kozanecka. Reviewers: prof. Zdzisław Gosiewski,
prof. Władysław Kryłlowicz, (appendix no. 1).
III. Course of employment – information about past and current
employments in scientific units
In the years 2007/2009 – half time Job as an assistant in Institute of
Turbomachinery, Faculty of Mechanical Engineering, Lodz University of
Technology.
Since 01.01.2010 r. - full-time position of an assistant professor; Lodz University
of Technology, Faculty of Mechanical Engineering, Institute of Turbomachinery.
IV. Presentation of the scientific achievement
A) Title of scientific achievement
As the scientific achievement in the discipline of Machine Design and Operation,
a monograph entitled “Foil bearings in turbomachinery” is submitted as the basis to
apply for a title of Doctor of Science.
B) Description of a monograph as the scientific achievement
Author: Jakub Łagodziński, Ph.D.
Year of publication: 2019,
Title: Foil bearings in turbomachinery,
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Book series: Monographs of Lodz University of Technology,
ISBN 978-83-7283-987-9, 172 pages. (appendix no. 4).
Reviewers: prof. Krzysztof Jóźwik, prof. Romuald Rządkowski.
1. Overview of the scientific aims of the above-mentioned works
and the results obtained
Reference numbers in square brackets [ ] are linked specified publications listed
in further chapters of this self-presentation.
Introduction
The progress of a civilization is always connected with development of new
technologies and modeling methods of complex physical phenomena. Modern
construction materials and modern manufacturing technologies make the design of
present machines and devices more and more interdisciplinary science, requiring
involvement of knowledge and experience of more and more experts from many
different areas. Difference between their real implementations makes the analysis of
phenomena that may appear during the exploitation hard and complex.
In searching for brand new design solutions for high-end machinery, the attention
of the design engineers became focused on unusual technologies of rotating shaft
supports. The bearings and supports that use unusual rule of operation or
uncommon lubricating medium are called “unconventional”.
Bearings are parts of machines that allow for relative movement of the elements.
In every fluid flow machinery, the shaft is supported in some kind of bearings that
keep it in place and don’t allow for radial or axial displacement. What is more, during
machine operation, a many external loads can appear. These loads can be caused
by a flowing medium, unbalance or external forces. The other important role of the
bearings is to transfer the loads from rotor to a casing. Moreover, the properties of
the bearings have significant influence on rotor stability, and that fact is especially
important for high speed turbomachinery.
The main classification of the bearings depends on their way to transfer the
forces from the rotor to the casing. They can be divided into following groups:
Rolling element bearings
Fluid lubricated bearings
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Gas lubricated bearings
Unconventional bearings (i.e. active magnetic bearings)
Most of design solutions applied in huge industrial turbines, pumps and
compressors utilize hydrodynamic oil bearings, where the lubricating film is
generated due to rotational movement of the shaft.
Conventional bearings work well in most typical design solutions. However, there
is an overall tendency to go up with nominal rotational speed of turbomachinery. This
is mainly caused by the economics, related to increasing of overall efficiency of the
machines and simultaneous decreasing of their dimensions.
Moreover, dynamic development of dissipated power generation systems leads
to increase in interest in small power turbomachinery, which is relatively small in size.
Willingness to increase the efficiency of power turbomachinery and modern solutions
of microturbine drives generate the demand for modern shaft support methods. A
high speed machine rotor supported in classic oil bearings implicates significant
increase in hydrodynamic losses inside the oil film. This can lead to loss of rotor
stability, bearing failure due to excessive vibration or simply premature wear of the
bearing surfaces. For this reason, an application of conventional bearings for these
operating conditions is hard or near to impossible to be implemented.
Along with the development of new technologies and new materials, the
application of the bearings utilizing unusual lubricants or operating principles became
possible. The unconventional bearings, i.e. active magnetic bearings, started to be
used. Other unusual types of bearings use gaseous or liquid phase of working
medium from the machine flow.
These unconventional bearings are often designed for a specific application, and
are able to operate in designated technical solution in the machine with special
requirements. They are applied in special conditions, where application of standard
bearing solutions is hard or almost impossible. The special technical requirements
related to operating conditions of some turbomachines often exclude the possibility of
using oil as a lubricating medium and thus, in effect they contribute to rapid
development of oil-free technology.
An important part of the development of this technology is owed to gas lubricated
bearings. The individual technical solutions related to development and applications
of the gas bearings in turbomachinery depend on their allocation, rotational speed,
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power and finally, the type of machine working medium. For many years, the gas
bearings have been developed in many research facilities worldwide, being involved
in implementation of these unusual supports in industrial applications.
Also in Institute of Turbomachinery, Lodz University of Technology (IoT, LUT), in
the labs of Division of Diagnostics and Automatics of turbomachinery, research
programs on unconventional bearings in fluid flow machines have been performed for
many years.
One of developed types, for example, are aerodynamic gas bearings, which,
similarly to hydrodynamic bearings do not require external pressurization. These
bearings are interesting alternative in the designing of small, high speed
turbomachinery. The pressure inside the convergent air gap is generated due to
relative movement of the shaft and the sleeve.
Continuous and stiff gas film is present at high journal rotational speed, and
therefore the area of applications is limited to, small and compact high speed rotors.
This fact allows to build hermetic machines, where there is no need to use seals and
protrude the shaft from the casing. There is also no need to separate the bearings
lubrication system from the process side of the machine.
From the operational point of view, a machine designed in according to this
philosophy, allows to eliminate many problematic and unreliable elements. These
machines can be smaller, lighter and cheaper in opposite to the classic ones.
To build the hermetic machinery it is necessary to master the technology of
design and construction of unconventional, high speed aerodynamic bearings, that
will be reliable and will provide low frictional losses.
The main problem related to application of unconventional lubricating medium is
a realistic evaluation of operational risk related to reliability and safety under different
operating conditions.
Moreover, the unconventional bearings may be an origin of several limits and
obstacles related to their proper operation. They require special technical solutions
and trustworthy design method for demanded reliability. Correct evaluation of
operational risk related to oilfree machine design requires experience, knowledge
and understanding of principles determining the functioning of its components. This
evaluation requires also gathering the knowledge from experimental research in
laboratorial and close to real operating conditions.
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The theoretical and experimental research performed in IoT LUT on
unconventional high speed bearings points clearly, that real and, what is important,
relatively cheap alternative in support of the shafts of some selected turbomachinery
are the gas foil bearings.
Aim and scope of the research
I started my research on foil bearings almost right after getting my PhD diploma.
It was related to the Key Project tasks, led by Institute of Fluid Flow Machinery, PAS
in Gdansk. The carried tasks required the elaboration of concept design of high
speed, hermetic, oil-free turbogenerator. One of the variants assumed use of the foil
bearings in rotor support. Unfortunately, it turned out that the turbine has to low
startup torque to overcome frictional torque of the bearings. In effect, the
turbogenerator was built as a machine with aerostatic bearings pressurized with
gaseous fraction of working medium. However, the foil bearings turned out to be such
a promising and perspective way of development, so an independent research
program was started.
The research I carried out were a continuation of multi – year IoT TUL tradition in
research programs on different types of gas bearings. Over many years, in
laboratories of IoT, many successful designs of spindles, drill machines and
microturbines were built. The rotors of those machines were supported in gas
aerostatic or aerodynamic tilting pad bearings.
Widening area of foil bearings applications and increasing involvement of many
scientific facilities in those unconventional support research became an inspiration for
establishing own knowledge base considering the manufacturing technology and
implementation of these technical solutions into the turbomachinery. The foil bearings
“know-how” is considered as a domain of a very few companies worldwide, mainly
from South Korea and United States. It would be a great achievement to develop
similar level of this technology in Poland.
The experimental research program I carried out covered both areas of thrust
and radial foil bearings. The other branch of gathered knowledge were numerical
simulations of a structure of foils and a gas film.
The modeling of the foil bearing properties is a difficult task, and so far, both
components were modeled independently. The next step, considered as a future goal
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of improvement, will be a development of a conjoined numerical model, consisted of
a gas film and foil structure models, with full interaction between them.
Due to difficulty in numerical modeling of these unconventional supports, basic
knowledge is gathered by experimental research. In my work, I performed many
experiments that allowed me to estimate the bearing properties or observe unique
phenomena during their operation. Throughout many years I researched many
operational properties and construction detail. Below I listed and shortly described
the researched issues:
The influence of technology procedures and the manufacturing details, including
types of coatings deposited on the shafts and the top foils [B1]. The foil
manufacturing technology was improved, the main focus was devoted to the
details, i.e. the foil setting slots geometry or resistance welding method. These
improvement allowed for optimal shape of thrust bearing pads, leading to the
stable gas film formation.
Bearing operation under heavy load conditions, with accelerated coating
degradation and dissipation of huge amounts of heat. To perform this, I have built
a test bench with electric spindle with attachment for sleeve or the thrust plate.
Then, I applied a significant load (tens of Newtons) [A6]. In this config, a
frictional torque was measured and visual evaluation of top foil coating
degradation was performed. Under heavy loads, the physical limits of these
bearings were determined. A map of dissipated power losses was also
generated.
Foil bearing “thermal runway” phenomenon. This event has a positive feedback
character and can lead to failure in a very short time. For better observation of
this phenomenon in controlled conditions, an overload test of relatively tight radial
bearing was performed. The development of the thermal runaway was thoroughly
researched and documented. Moreover, some early symptoms of its incoming
were identified. During this experiment, an IR camera was also used.
Gas film development during the bearing startup, measurement of air gap
thickness and pressure distribution in the gas film. For this purpose, a special
sleeve with optical, high resolution (±0,2 µm) displacement sensors was built.
The sensors measured the top foil deflection, caused by the gas pressure
generation in the airgap. The sleeve was also equipped with the pneumatic
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connector attached directly to an orifice in the top foil. The described method
allowed for direct pressure measurement in the gas film. From this research
came off a conclusion, that gas film development process has three stages. The
most interesting fact in the gas film pressure measurement, is the presence of
underpressure in some part of the gas film (part of the airgap opposite to the
applied load direction).
Improvement of the radial bearing, consisted of additional “intermediate” foil,
squeezed between the top foil and bump foil. The experimental results proved
that this modification increases the coefficient of the bearing load capacity,
prevents from “sagging” of the top foil between the bumps, decreases the
frictional torque in the bearing, and in effect decreases the overall power losses
(by approx. 25%). With less losses turned into heat, the bearing has a wider
margin of safety from the thermal runaway occurrence.
Estimation of elastic and damping properties of foil structure. This research
experiment was performed on a special test stand with fixed journal and with
bearing sleeve subjected to external harmonic excitation. These conditions
allowed for elimination of gas film influence. The influence of continuous, stiff gas
film was omitted for two reasons. First, during the operation, the continuous gas
film has relatively high stiffness in comparison to foil structure, and in effect, it
has very little influence on bearing dynamics. Considering the gas film and the
foil structure as two elastic elements connected in series, in fact the properties of
the foil really determine the global stiffness of the bearing. The other reason is
that the numerical analysis of the gas film in aerostatic and aerodynamic
bearings has been widely described in many publications of IoT LUT employees.
One of more interesting examples of publications devoted to gas film numerical
simulations is E. Tkacz PhD dissertation [PROM1]. The experimental estimation
of damping and elastic properties, allowed me for elaboration and verification of
numerical model of foil structure [A9][B7]. The developed model, after proper
tuning, can be successfully applied into complex rotordynamic models of shafts
supported in foil bearings.
Operational properties of a radial blower prototype. In IoT LUT laboratory, a
prototype of the radial blower was built. It was driven by PM synchronous motor
with inverter. The shaft of the blower was supported in foil bearings. The machine
is a demonstrator of high speed oil free bearing technology. It is a tangible effect
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of my multiyear experience in the foil bearings experimental research and
numerical simulations. The test bench allowed me for examination of rotor
behavior, its dynamics in wide range of rotational speed, and influence of load
forces caused by the air flowing through the impeller. The last issue is really
interesting, because I used the susceptibility of the thrust bearing for thrust force
estimation. I designed and tested an unique system of thrust force estimation,
working in real-time during normal operation of the machine. Moreover, on this
test bench, in controlled conditions, I led to heavy overload and destruction of the
thrust bearing. Destruction of the bearing, somehow an unfavorable incident,
revealed another interesting advantage of the foil bearings – their ability to
reduce the range of the damage in the machine. In the mentioned incident, the
only part being destroyed was a set of the top foils, while keeping other elements
unaffected. This unique feature is known as a “soft failure” and is highly
demanded in turbomachinery design.
With my knowledge and experience in field of design and experimental research
of the foil bearings, I was a leader of a few research tasks that were made to order of
external scientific facilities. The main scopes of these tasks were to develop the
optimal foil bearing solutions for a given working conditions, specified by a contractor.
[PB6], [PB7], [PB9].
The experience gathered during the mentioned research tasks resulted in taking
more ambitious challenge which is a development of the bearing support solution for
an electric assisted turbocharger [PB10]. Since February 2019 I have been a leader
of the research project that includes:
Development of the foil bearing technology for rotational speed up to 200 krpm,
Design concept of the machine,
Numerical simulations of bearings load capacity, shaft stress distribution and
rotordynamics,
Manufacturing of the prototype,
Experimental tests in conditions similar to real operating environment,
Implementation of the finished solution in industrial applications – consulting with
the contractor.
The contractor is an international company from aerospace/ motorsport industry
(due to singed non-disclosure agreement, I cannot provide more details).
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The monograph description
The presented monograph (appendix no. 4), being the main scientific
achievement of the candidate, is a summary of scientific experience gathered during
multiyear research devoted to the gas foil bearings in turbomachinery shaft supports.
I this book, some specific design and technology aspects were shown. These
aspects allow the reader to understand the complexity of these seemingly simple
thrust and radial bearings.
The main accent of the monograph is a presentation of theoretical basics and
author’s research, experimental and numerical procedures, that were used in
designing of an unique prototype of radial blower with rotor supported in thrust and
radial bearings lubricated with the ambient air.
The book contains also a history and an origin of these unconventional shaft
supports. I divided their development into three generations of designs and indicated
main differences and their influence on the performance.
Particular chapters of my monograph present in chronological order the
development of theoretical and experimental research, that led to elaboration of own
numerical and design methodology. This methodology allowed for elaboration of low-
cost manufacturing methods. These chapters include:
Gas bearings classification and practical explanation of their operation – in both
aerostatic and aerodynamic solutions,
Introduction to gas foil bearings design, operating principles and manufacturing of
their components. I presented here the main fields of applications of foil bearings
in industrial solutions. I also made, using several technical brochures and
webpages, an overview of the selected oilfree turbomachinery examples in
industry.
Description of typical materials used for foil bearing components, and, what is
more important, selection of proper protective coating layers on the shaft and the
top foil. These essential issues determine the bearing durability and frictional
losses during the startup. In normal operating conditions they determine the
allowable lubricating medium and permissible temperature range.
Description of wide spectrum of performed research experiments of gas foil
bearings. So far, I have examined the load capacity of the thrust and radial
bearings, I have also analyzed the gas development process during the startup. I
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have determined the pressure distribution inside the gas film at different loads
and different shaft rotational speeds.
Modeling processes of the gas foil bearings were presented in the another
chapter. The numerical models of elastic foil structure were developed and
verified on the test benches.
Separate chapter presents a unique radial blower prototype, designed and built
by myself. The rotor of this flow machine is supported in experimentally
developed foil bearings. The chapter contains acquired rotordynamic data, and
presents innovative concept of utilization of thrust bearing susceptibility for real-
time thrust force estimation.
The knowledge gathered in this monograph is very important from scientific point
of view, but also brings many valuable information for applications and exploitation of
foil bearings. In a literature devoted to foil bearings applications and operation, a lack
of practical knowledge related to experimentally verified methods is glaringly evident.
Therefore it is justified to say, that this monograph and its contents represent
noteworthy compendium of knowledge for engineers and researchers, who having in
mind the pros and cons of this technical solution, will select the foil bearings as a
support of their machine rotors, where due to specific conditions, the conventional
bearings cannot be applied.
Overview of the achievements
The results of my research activities and my contribution to development in the
field of Machine Design and Operation include:
Definition of the limits of foil bearing technology,
Implementation of intermediate foil to classical bearing concept. This additional
foil increases load capacity and thermal stability of radial bearing,
Development of thrust force real-time measurement method for a turbomachine,
Performing and recording of thermal runway phenomenon with definition of its
early symptoms
Performing in controlled conditions the destruction of thrust bearing of a blower,
to prove the ability of the foil bearings to “soft failure” feature.
Performing and recording of gas film development process in the radial bearing
13
Determining the pressure distribution in the airgap under different loads and
different rotational speeds.
Elaboration of the radial foil bearing global stiffness and damping coefficients
determination method
Elaboration of trustworthy numerical model of elastic foil structure
V. Overview of other scientific and research accomplishments
A) List of other (not listed in point 4b) published scientific works
and indicators of scientific achievements
Full references to citation list of my publications with Impact Factor have been
listed in appendix 8: Publication achievements confirmed on Web of Science.
1. Monograph, chapters in books, PhD dissertation
M1. Łagodziński, J., The unconventional mechanical designs aided by the magnetic
field, PhD dissertation, Lodz University of Technology, 2009r.
M2. Z. Kozanecki, D. Kozanecka, P. Klonowicz, J. Łagodziński, M. Gizelska, E.
Tkacz, K. Miazga, A. Kaczmarek. Monograph entitled: Small Power Oil-free
Turbomachinery. Collective work, edited by prof. Z. Kozanecki. Publishing:
Institute of Fluid Flow Machinery, Polish Academy of Sciences,Gdańsk 2014 –
co-author
My contribution to this work consisted in elaboration of chapters 2.3.4-5, 2.4.2-
3, 4.1.2, 5.1.2-3, 5.3. Moreover, I took part in literature overview, in gathering
the additional materials to monograph and in final editorial work. I estimate my
contribution at approx. 20%.
2. List of other papers (not included in the scientific achievement
listed in point 4) published in international scientific journals
from the database of Journal Citation Reports (JCR)
Publications include the grading scale of the Polish Ministry of Science and
Higher Education (MSHE) appropriate in the year of publication and Impact Factor
(IF).
14
A1. Łagodzinski, J., Kozanecki, Z., Tkacz, E., Miazga, K. 2014 Oil-Free Bearings
for Hermetic High-Speed Turbomachinery. Journal of Vibration Engineering &
Technologies (earlier known as Advances in Vibration Engineering). Krishtel
Emaging Solutions IF=0.290 (2013) MSHE 15 points
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I took part in
literature overview, elaboration, results analysis and discussion. I estimate my
contribution at approx. 20%.
A2. Łagodziński J., Kozanecka D., Kozanecki Z. (2011) Active magnetic damper in
a power transmission system, Communications in Nonlinear Science and
Numerical Simulation, Journal Elsevier, No 16 (2011), pp. 2273-2278.
www.elsevier.com/locate/ cnsns_1567. IF=2.569 (2014) MSHE 40 points
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I verified the
model on the test bench. I took part in literature overview, elaboration, results
analysis and discussion. I estimate my contribution at approx. 30%.
A3. Łagodziński J., Kozanecki Z., Tkacz E., Miazga K. Theoretical and
experimental investigations of oil-free bearings and their application in
diagnostics of high-speed turbomachinery, Key Engineering Materials Vol. 588
(2014) pp 302-309 Online available since 2013/Oct/11 at www.scientific.net
(2014) Trans Tech Publications, Switzerland
doi:10.4028/www.scientific.net/KEM.588.302 IF=0.21 (2014) MSHE 8 points
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I took part in
literature overview, elaboration, results analysis and discussion. I estimate my
contribution at approx. 25%.
A4. Kryllowicz W, Magiera R, Łagodzinski J, Sobczak, K Liskiewicz, G,
Aerodynamical and Structural Design of the Diagonal Blower and Its Numerical
and Experimental Validation Advances in Vibration Engineering Volume: 2
Issue: 5 Pp. 459-468 (2014), IF=0.1531 (2014) MSHE 8 points
15
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I took part in
literature overview, elaboration, results analysis and discussion. I estimate my
contribution at approx. 15%.
A5. Łagodziński J., Kozanecka D., Kozanecki Z., Tkacz E., Experimental Research
Of Oil-Free Support Systems To Predict The High-Speed Rotor Bearing
Dynamics, International Journal of DYNAMICS and Control, Springer Berlin
Heidelberg (2014), DOI 10.1007/s40435-014-0074-9, Article 8 pages. Online
available since March 19, 2014. IF=0.321 (2014)
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I buiIt a test
bench and verified the model on it. I took part in literature overview, elaboration,
results analysis and discussion. I estimate my contribution at approx. 25%.
A6. Kozanecki, Z., Łagodziński, J., Tkacz, E., Miazga, K., Performance of thrust
airfoil bearing for oil-free turbomachinery, Journal of Vibrational Engineering
and Technologies 6(1),8 2018 Volume: 6 Issue: 1 DOI: 10.1007/s42417-018-
0001-z IF=0.615 (2018) MSHE 8points
My contribution to this work consisted in participation in elaboration of the
concept of the publication. I defined the scientific aim and scope of the
manuscript. I took part in elaboration of methodology of the work. I co-designed
the test bench and took part in experimental research. I prepared figures and
tables for the manuscript. I took part in the literature review, elaboration and
analysis of the results, discussion of the results and conclusions. I prepared the
manuscript for publishing and I was responsible for contacts with the editors
and reviewers. I estimate my contribution at approx. 60%.
A7. Tkacz E., Kozanecki Z.; Łagodzinski J., Solenoid Actuator for a Camless
Control System of the Piston Engine Valve. Edited by: Awrejcewicz, J;
Szewczyk, R; Trojnacki, M; et al.Mechatronics: Ideas For Industrial
Applications, Book Series: Advances in Intelligent Systems and Computing
Volume: 317 Pages: 141-148 Published: 2015 IF=0.123 (2015)
My contribution to this work consisted in numerical optimization of the design.
16
I co-designed the test bench and took part in experimental research. I prepared
figures and tables for the manuscript. I took part in the literature review,
elaboration and analysis of the results, discussion of the results and
conclusions. I estimate my contribution at approx. 60%.
A8. Łagodziński,J, Z. Kozanecki, E. Tkacz, D. Kozanecka, A Self-Acting Gas
Journal Bearing with a Flexibly Supported Foil - Numerical Model of Bearing
Dynamics, International Journal Of Structural Stability And Dynamics Vol. 17
Issue: 5 DOI: 10.1142/S0219455417400120 published: June 2017 IF=1.028
(2015) MSHE 25 points
My contribution to this work consisted in numerical models verification. I took
part in the literature review, elaboration and analysis of the results, discussion
of the results and conclusions. I prepared the manuscript for publishing and I
was responsible for contacts with the editors and reviewers. I estimate my
contribution at approx. 25%.
A9. Kozanecki, Z; Kozanecka, D; Łagodzinski, J.; Tkacz, E, Numerical and
Experimental Investigations of Oil-Free Support Systems to Predict High-Speed
Rotor Bearing Dynamics, Journal Of Vibration Engineering & Technologies Vol.
3 Issue: 6 pp. 759-768 IF=0.12 (2015) MSHE 8 points
My contribution to this work consisted in numerical models verification. I co-
designed the test bench and took part in experimental research. I took part in
the literature review, elaboration and analysis of the results, discussion of the
results and conclusions. I estimate my contribution at approx. 25%.
A10. Kozanecki, Z., Łagodziński, J., Tkacz, E., Miazga, K. High-speed Hermetic
Turbogenerator With A Hybrid Bearing System, Journal Of Vibrational
Engineering And Technologies 6(1),8 2018 Volume: 6 Issue: 4 pp. 325-331
DOI: 10.1007/s42417-018-0042-3 IF=0.615 (2018) MSHE 8 points
My contribution to this work consisted in preparation of geometry and numerical
models. I performed the simulations and obtained the results. I verified the
model on the test bench. I took part in the literature review, elaboration and
analysis of the results, discussion of the results and conclusions. I estimate my
contribution at approx. 25%.
17
3. List of other papers (not included in the scientific achievement
listed in point 4) published in the scientific journals beyond the
database of Journal Citation Reports (JCR)
B1. Łagodziński J., Kozanecki Z., Miazga K., Tkacz E., 2011, Investigations of
Coating Materials for Air-Foil Bearings, Cieplne Maszyny Przepływowe nr 140 s.
149-156, IMP PŁ, Łódź, 2011. MSHE 1 point
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research. I
took part in the literature review, elaboration and analysis of the results,
discussion of the results and conclusions. I prepared the manuscript for
publishing. I estimate my contribution at approx. 25%.
B2. Łagodziński J., Kozanecki Z., Kozanecka D., Tkacz E, Niekonwencjonalne
Bezolejowe Łożyska Wysokoobrotowe Turbogeneratora Dla Obiegu ORC,
Cieplne Maszyny Przepływowe nr 144, IMP PŁ, Łódź, 2013. MSHE 1 point
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research and
numerical model verification. I took part in the literature review, elaboration and
analysis of the results, discussion of the results and conclusions. I prepared
figures and tables for the manuscript and took part in editorial work. I prepared
the manuscript for publishing. I estimate my contribution at approx. 33%.
B3. Łagodziński J. Kozanecki Z., Magnetic Thrust Bearing for the ORC High –
Speed Microturbine Solid State Phenomena Vol. 198 (2013) pp 348-353 Online
available since 2013/Mar/11 at www.scientific.net © (2013) Trans Tech
Publications, Switzerland doi:10.4028/www.scientific.net/SSP.198.348 MSHE
10 points
My contribution to this work consisted in numerical optimization of the design. I
co-designed the test bench and took part in experimental research. I took part in
the literature review, elaboration and analysis of the results, discussion of the
results and conclusions. I prepared figures and tables for the manuscript and
took part in editorial work. I prepared the manuscript for publishing. I was
18
responsible for contacts with the editors and reviewers. I estimate my
contribution at approx. 60%.
B4. Łagodziński J., Gizelska M., Kozanecka D., Kozanecki Z., Estimation of
External Forces in the Rotating System with an Active Magnetic Suspension
Solid State Phenomena Vol. 199 (2013) pp 21-26 Online available since
2013/Mar/18 at www.scientific.net© (2013) Trans Tech Publications,
Switzerland doi:10.4028/www.scientific.net/SSP.199.21 MNSiW 10 points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental. I took part in
the literature review, elaboration and analysis of the results, discussion of the
results and conclusions. I prepared the manuscript for publishing. I estimate my
contribution at approx.25%.
B5. Łagodziński, J. ,Miazga, K. ,Musiał, Application of a compliant foil bearing for
the thrust force estimation in the single stage radial blower. Cieplne Maszyny
Przepływowe nr 145 s. 87-88, IMP PŁ, Łódź, (2014). MSHE 1 points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research. I
took part in the literature review, elaboration and analysis of the results,
discussion of the results and conclusions. I prepared figures and tables for the
manuscript and took part in editorial work. I prepared the manuscript for
publishing. I was responsible for contacts with the editors and reviewers. I
estimate my contribution at approx. 50%.
B6. Łagodziński, J., Tkacz, E. ,Kozanecka, D. ,Kozanecki, Z., Oil free bearing
development for high-speed turbomachinery in distributed energy systems –
dynamic and environmental evaluation. Cieplne Maszyny Przepływowe nr 145
s. 87-88, IMP PŁ, Łódź, (2014). MSHE 1 points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research.
I verified the numerical models. I prepared figures and tables for the manuscript.
I took part in the literature review, elaboration and analysis of the results,
19
discussion of the results and conclusions. I estimate my contribution at
approx. 25%.
B7. Tkacz E., Kozanecka D., Kozanecki Z., Łagodziński J., Oil-free bearing
development for high-speed turbomachinery in distributed energy systems –
dynamic and environmental evaluation. Open Engineering. Volume 5, Issue 1
pp.343-348, ISSN (Online) 2391-5439, DOI: 10.1515/eng-2015-0044,
September 2015 MSHE 11 points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research.
I verified the numerical models. I prepared figures and tables for the
manuscript. I took part in the literature review, elaboration and analysis of the
results, discussion of the results and conclusions. I estimate my contribution at
approx. 25%.
B8. Łagodzinski J., Miazga K., Musiał I. Application of a compliant foil bearing for
the thrust force estimation in the single stage radial blower. Open Engineering.
Volume 5, Issue 1, pp. 287-292 ISSN (Online) 2391-5439, DOI: 10.1515/eng-
2015-0032, August 2015 MSHE 11 points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research. I
took part in the literature review, elaboration and analysis of the results,
discussion of the results and conclusions. I prepared figures and tables for the
manuscript and took part in editorial work. I prepared the manuscript for
publishing. I was responsible for contacts with the editors and reviewers. I
estimate my contribution at approx. 50%.
Publications prior to PhD diploma
PD1. J. Łagodziński Modelowanie pola magnetycznego metodą elementów
skończonych w układzie detekcji ruchu suwaka wzmacniacza hydraulicznego
Cieplne Maszyny Przepływowe 131/2007 ISSN 0137-2261 MSHE 1 point
My contribution to this work consisted in numerical optimization of the design.
I designed the test bench and performed experimental research. I was
responsible for the literature review, elaboration and analysis of the results,
20
discussion of the results and conclusions. I prepared figures and tables for the
manuscript and took part in editorial work. I prepared the manuscript for
publishing. I was responsible for contacts with the editors and reviewers. It was
my independent publication.
PD2. Łagodziński, J. Modelling of magnetic fields with the finite element method in
machine diagnostic systems (2009) Solid State Phenomena, 147-149, pp. 155-
160. DOI: 10.4028/www.scientific.net/SSP.147-149.155 MSHE 10 points
My contribution to this work consisted in numerical optimization of the design.
I designed the test bench and performed experimental research I was
responsible for the literature review, elaboration and analysis of the results,
discussion of the results and conclusions. I prepared figures and tables for the
manuscript and took part in editorial work. I prepared the manuscript for
publishing. I was responsible for contacts with the editors and reviewers. It was
my independent publication.
PD3. Kozanecki Z., Łagodzinski J., Kozanecka D., Failure diagnosis of the gas
compressor diaphragm vane, DIAGNOSTYKA’ 4(52)/2009 pp. 65-71 MSHE 4
points
My contribution to this work consisted in participation in of methodology of the
work. I co-designed the test bench and took part in experimental research.
I verified the numerical models. I took part in the literature review, elaboration
and analysis of the results, discussion of the results and conclusions. I prepared
figures and tables for the manuscript and took part in editorial work. I prepared
the manuscript for publishing. I was responsible for contacts with the editors
and reviewers. I estimate my contribution at approx. 40%.
4. List of conference reports
A detailed list of conference reports is included in Appendix 6.
21
5. Summary of publication achievements
I present a comprehensive summary of my scientific achievement as regards
publications in Table 1. A list of papers citing my publications within the Web of
Science core database is included in appendix 9.
Table 1. Scientific achievement - publications
Year
Number of publications
Co
nfe
ren
ce
co
mm
un
ica
tio
ns
MS
HE
Po
ints
Imp
ac
t F
ac
tor
Po
ints
WoS Citation Report
To
tal
Ind
ex
ed
in
JC
R
All d
ata
base
s
Wit
ho
ut
se
lf-
cit
ati
on
s
Before PhD
2006-2009
3 0 4 8 0 0 0
After PhD
2010-2019
18 10 29 179 6,044 24 18
Total 21 10 33 187 6,044 24 18
Total IF based on Journal Citation Reports (JCR): 6,044;
Number of citations in the Web of Science all databases: 24; (18 without self-
citations)
H-index on the basis of the Web of Science (WoS) database: 3;
Number of citation in the Scopus database: 40 (31 without self-citations);
H-index on the basis of the Scopus database: 5;
Total number of MSHE points: 187.
22
VI. Didactics and science popularization achievements
A) International and national research projects management and
participation
During my professional career, I took part in 12 research projects, both national
and international. These research projects were supported financially mainly by the
National Centre for Research and Development (NCR&D) or European Union Funds
within the European Social Fund in the Human Capital Operational Programme.
Before the PhD dissertation, I took part in two research projects. After PhD, I am
manager of one research project and have been a leader of three tasks within three
projects, and one research grant from Youth Scientists Fund, as stated in the detailed
list below:
PB1. Research project nr N N504 4505 33 entitled ” Diagnostic System of machine
rotor with active magnetic bearing support”, 2010r. – executor,
PB2. Industrial research project: „Soupape électromagnétique CAMLESS”, performed
under agreement between Lodz University of Technology and PSA Peugeot
Citroen company (2012). The main scope of the project was to develop
camless, electromagnetic control system of valve movement in internal
combustion engine - executor,
PB3. Key Project no. POIG.01.01.02-00-016/08 pt. „Model agroenergetic complexes
as an example of distributed cogeneration based on local and renewable
energy sources”. subtask 5.5. entitled: ”Experimental research and design work
on bearing assemblies, seals, high speed rotors and microturbine casings”.
Main contractor: Institute of Fluid Flow Machinery, PAS, Gdańsk. Years 2008-
2013. – executor,
PB4. Strategic NCR&D Project, Research task No. 4 entitled: „Development of
integrated technologies for the production of fuels and energy from biomass,
agricultural and other waste” Topic 1 – Multigenerating poweplants, subtask
entitled: ”Implementation of a high-speed hermetic turbogenerator with a power
of approximately 80 kW for the ORC cycle with MDM working medium”. Project
cofunded by NCR&D. Consortium: IFFM, PAS – Energa Company. Years 2012-
2015. – executor
23
PB5. Research project performed under agreement between Airbus Helicopters
Poland Ltd and Lodz University of Technology. Title of the project: „Flexible
couplings prototypes development and horizontal transmission tests” (2015-till
now) – executor
PB6. Key project no. POIG.01.01.02-00-016/08 entitled „Model agroenergetic
complexes as an example of distributed cogeneration based on local and
renewable energy sources.” Subtask „Design, construction, installation of a test
bench for testing the thickness of a gas film in a radial foil bearing during start-
up and operational conditions” 2013 – task leader,
PB7. Project within the Applied Research Programme I/A6/6/2012 entitled:
“Application of thermo-electric materials for thermal stability improvement of
high Speed rotor supports”, subtask entitled: „Development of manufacturing
technology and research of gas foil bearings” (2014).- task leader,
PB8. Internal Grant from Young Scientist Fund on Faculty of Mechanical Engineering,
Lodz University of Technology entitled: ”Exploitation research of radial blower
with rotor supported in foil bearings”, (2015) – grant leader,
PB9. Project no. 2016/21/D/ST8/01711 entitled: „Research and modeling of anti-
vibration processes in high speed bearings with variable geometry” funded in
2017 – 2020 from National Scientific Centre – research task entitled:
„Development of top foil manufacturing technology for bearing with variable
geometry” (2018) – task leader,
PB10. Industrial research project „Air foil bearings development and industrialization
support“. The project includes development of foil bearing shaft supports
capable to operate at 200 000 rpm, design concept, numerical analyses,
manufacturing, experimental tests and industrial implementation. Contractor:
international company from automotive/aerospace industry (confidential).
February 2019 – till now – project leader.
Research projects prior to PhD
Développement d’un palier magnétique a commande numérique pour
transmission arrière d’un hélicoptère - bilateral agreement for scientific research
signed by Institute of Turbomachinery LUT and EADS Eurocopter implemented in
2005-2007 - executor,
24
Simulations théoriques et essais expérimentaux du système «reed-switch» -
bilateral agreement for scientific research signed by Institute of Turbomachinery
LUT and EADS Eurocopter, implemented in 2007 - executor.
B) Implemented original design, construction and technological
achievements
Full list of the implemented original design, construction and technological
achievements has been attached in appendix 7.
C) Awards and distinctions
NAGR1. 2nd prize in „Youth Innovators” competition being organized by Industrial
Research Institute for Automation and Measurements in Warsaw, 2010,
NAGR2. Faculty of Mechanical Engineering - Dean’s distinction of PhD thesis –
2010,
NAGR3. Rector's Award of the Lodz University of Technology for achievements in
the field of science and teaching in the years 2009-2018, Łódź, (for 2009,
2011, 2013, 2014, 2015, 2017, 2018,): total 7.
Awards and distinctions prior to PhD
Prof. Ludwik Muller’s diploma on XXXV Polish Symposium entitled „Machinery
diagnostics”, 2008r, for the best lecture of young scientist.
D) Reviewing of manuscripts for international and national
scientific journals
REC1.Wierzcholski K.Miszczak A. Temperature and Adhesion Influence on the
Cylindrical Microbearing Operating Parameters, paper on Mechatronic
Systems And Materials (2012),
REC2.Żywica G., Kiciński J. The influence of selected design and operating
parameters on the dynamics of the steam micro-turbine, 1 peer-reviewed
manuscript in Central European Journal of Engineering (2014),
REC3.Bagiński P., Żywica G. The influence of temperature on dynamics of the rotor -
foil bearing system, 1 peer-reviewed manuscript in Transactions of the
IFFM (2016),
25
REC4.Przybylowicz P., Near-critical Behavior Of An Elastic Rotating Shaft Stabilized
By Electromagnetic Actuators, 1 peer-reviewed manuscript in International
Journal of Stability and Dynamics (2016),
REC5.Adamowicz M., Żywica G., Advanced gas turbines health monitoring systems,
1 peer-reviewed manuscript in Diagnostyka (2018),
REC6.Bagiński P., Żywica G. Determination Of The Lift-off Speed In Foil Bearings
Using Various Measurement Methods, 1 peer-reviewed manuscript in
Mechanics and Mechanical Engineering (2018),
REC7.Breńkacz Ł, Żywica G., Bogulicz M., Dynamic performance analysis of the
rotor of a 30 kW ORC microturbine considering properties of aerodynamic gas
bearings, 1 peer-reviewed manuscript in Mechanics and Mechanical
Engineering (2018),
E) Expertise or other studies made to order
I am a coauthor of nine expertises, from field of high Power turbomachinery:
EXP1. Kryłłowicz W. Łagodziński J., Beczkowski J. Numerical stress analysis of
boiler exhaust fan, 2012,
EXP2. Kozanecki Z., Kryłłowicz W., Łagodziński J. Concept desing of experimental
test stand for biomass shredding machine for boiler furnance purposes.
contractor: ŚWIĄTEK company, Bydgoszcz (2012)
EXP3. Kozanecki Z., Tkacz E. Łagodziński J. Andrzej Kaczmarek Soupape
Électromagnétique Camless, contractor: PSA Peugeot Citroen, November
2012
EXP4. Kozanecki Z., Tkacz E. Łagodziński J. Design and manufacturing of working
medium lubricated bearings for ORC turbogenerator. contractor:
Turboservice sp. z o.o. , 2015,
EXP5. Kozanecki Z., Łagodziński J., Papierski A. Failure Diagnosis Of 1st stage
impeller of The 1C01 Gas Compressor in hydrocracking installation.
Contractor: PKN Orlen Płock, July 2017
EXP6. Łagodziński J., Magiera R., Numerical Analysis of the Dynamics of the
WCMO-1050 Furnance mixer rotor. Contractor: Seco Warwick Świebodzin,
January 2018
26
EXP7. Łagodziński J., Magiera R., Numerical Analysis of the Dynamics of the
Furnance Mixer Rotor. Facility: Hindalco, India. Contractor: Seco Warwick
Świebodzin, April 2018,
Expertise or other studies made to order prior to PhD:
Kozanecki Z., Najdecki S., Łagodziński J. Technical Expertise considering the
operation of the Hermetic cnpk 200-360 pump in hydrocarbons installation in
PKN ORLEN company, 2006,
Kozanecki Z., Łagodziński J., Więckowski S. Failure Diagnosis Of The Gas
Compressor Diaphragm Vane And the Modification Suggestions, contractor:
EuroPolGaz, July 2008,
F) Supervising of PhD students as a supportive supervisor
PROM1. Eliza Tkacz, 2013-2015, PhD dissertation entitled: „The dynamics of a gas
journal bearing with flexibly supported foil”, Lodz University of Technology,
Faculty of Mechanical Engineering – supportive supervisor
G) Achievements in didactics and popularization of science
Manager of “Power Engineering Technologies and Machines II” subject (Faculty
of Mechanical Engineering, 1st stage programme, course of Power Engineering)
Took part in five trainings:
Certificate of Post-Diploma Programme for Academic Teaching Staff, 2009
Certificate of Ansys FEM practitioner by MESco company, 2011
Three trainings in field of signal processing and vibration measurement (years
2008 -2012)
TUL University internship coordinator in Veolia Lodz (2011-2016)
Member of Didactic Commission on Power Engineering studies in cadence 2016-
2020
Supervisor of 18 B. Sc. theses and 6 M. Sc. theses. Three of them have been
awarded:
1st prize for B.Sc. E. Wojtarkowska in Competition for the best thesis in the field
of Power Engineering. The competition has been organized by the Lodz
University of Technology and Dalkia company in 2014,
27
Distinction of M. Sc. Piotr Zieliński thesis in ŁRF SNT-NOT for the best M. Sc.
thesis on Lodz University of Technology in 2017,
Curran – Werner prize for M.Sc. thesis of student Sebastian Dziomdziora (2018)
VII. Summary of scientific, engineering and other accomplishments
Scientific, engineering and other accomplishments within the application for a
Doctor of Science degree are summarized in Tables 2 to 4.
Table 2. Scientific achievements within the application for a Doctor of Science
degree - summary
No. Scientific achievements
Number
Before PhD
After PhD
Total
1. Manuscripts published in international scientific journals from the database of Journal Citation
Reports (JCR) 0 10 10
2. Manuscripts published in international scientific
journals not registered in the database of Journal Citation Reports (JCR)
3 8 11
4. Author/co-author of papers published in monographs in Polish
0 2 2
6. Active participation in international and national scientific conferences
4 29 33
7. Oral presentations at international and national thematic conferences
4 17 21
8. Reviews of manuscripts for international and national journals
0 7 7
Total number of scientific achievements 11 72 84
28
Table 3. Implementation achievements
No. Implementation achievements
Number
Before PhD After PhD Total
9. Implemented original design, construction and technological
achievements 2 10 12
10. Team reports, catalogues, documentation of research work and
expertise 6 29 35
11. Project management of the investigations conducted in
cooperation with researchers from other Polish or foreign academic
centres or industrial partners
0 1 1
12. Task management within research
projects 0 3 3
Total number of implementation achievements
8 43 51
Table 4. Other achievements
No. Other achievements
Number
Before PhD
After PhD
Total
13. Supervising of PhD thesis as the supportive supervisor
- 1 1
14. Expertise or other studies made to order 2 7 9
15. International and national research projects management and participation
2 9 11
16. Received awards and distinctions 2 8 10
17. Awards and distinctions of supervised
students 0 3 3