Nauki Techniczne

Bulletin of the Polish Academy of Sciences: Technical Sciences


Bulletin of the Polish Academy of Sciences: Technical Sciences | 2013 | 61 | No 2 |


Abstract The paper shows that symmetry forms a basis for relations between different properties of material. In this way, the key quantities for specification of an atomistic model are identified. Material symmetry distinguishes representative processes of small strains. It is proved that the errors in the densities of the energies stored in these processes determine the range of inaccuracies with which an atomistic model recreates processes of small deformations. The errors are equal to the inaccuracies in the eigenvalues of the elasticity tensor, that is in the Kelvin moduli. For cubic crystals, the elementary processes indicated by the symmetry initiate the key paths of large deformations: Bain and trigonal ones. Therefore, the substantial errors in the Kelvin moduli lead to incorrect reconstructing the metastable phases: bcc, sc and bct. The elastic constants commonly used in the literature do not provide such information as the Kelvin moduli. Using the eigenvalues of the elasticity tensor as well as other key properties indicated by the symmetry, the EAM model proposed by A.F. Voter for copper is specified. The obtained potential more accurately reproduces small and large deformations and additionally, correctly describes defect formation as well as Cu dimer properties
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Abstract The paper presents numerical analyses aimed at preliminary assessment of the protective panel effectiveness, which task is to protect the elements of building structures against explosion. For the criterion of assessing the effectiveness of the panel the load capacity of the column made of steel I-beam was chosen. Ultimate force was determined by using advanced computational procedure, which consisted of four stages: preload, blast simulation, dynamic response and static analysis of deformed structure. Blast load was simulated using Lagrangian- Eulerian domain coupling. Results indicated that the application of the protective panel significantly reduces the plastic deformation of the structure.
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Abstract Computed tomography is one of the most significant diagnostic techniques in medicine. This work is focused on hard-field imaging, where signals take a form of straight rays and the reconstructed image can be presented as a matrix with unknown pixels. Algebraic methods for direct computation of the image have not been used in practice because of the scale of the problem and numerical errors appearing in the solution. The aim of this work was to analyse the performance of direct algebraic algorithms for tomographic image reconstruction including regularisation mechanism such as: generalised regularisation, Tikhonov regularisation, Twomey regularisation and ridge regression (RR), as well as comparing the results with the filtered backprojection (FBP) as the reference method. The performed analyses demonstrated that the regularised algebraic methods are more accurate than the commonly used FBP, and RR appeared the most precise among them. Additionally it was shown that the invariant system matrix (inverted during calculations) can be easily determined by solving the forward problem. Finally, potential directions of further research have been pointed out.
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Abstract The contents are concerned with a concept of an oilless and frictionless compressor operating without dead movement and having functional parameters superior to compressors of renowned manufacturers. The concept is based on patents No. 68220, 83060, P377851 by W. Chomczyk and patents P394072, P385733 by W. Chomczyk, W. Ostapski and J. Piotrowski. The proposed design of an oilless compressor ensures volumetric efficiency higher than that encountered in conventional compressors. It also generates pure compressed medium without necessity of filtering from oil particles, which is especially desired in food, pharmaceutical, medical, fragrance, chemical and automation industry.
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Abstract Copper-based composites could be widely used in automotive, electronic or electrical industry due to their very promising thermal properties. In the present paper, Cu-AlN metal matrix composites with ceramic volume fractions between 0.1 and 0.4 were fabricated by hot pressing method in vacuum. Dependence of the coefficient of thermal expansion (CTE) and the thermal conductivity (TC) on the chemical composition of composites has been investigated. The measured values of the thermal expansion coefficient have been compared with the analytical models’ predictions. A numerical model based on FEAP 7.5 in 3D space has been used to evaluate the influence of the porosity on the thermal properties (thermal conductivity) of the composite. A fairly good correlation between the FEM results and the experimental measurements has been obtained.
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T. Kaczorek, Warsaw University of Technology

Deputy Editor-in Chief:

M.P. Kazmierkowski, Warsaw University of Technology
A. Rogalski, Division IV Technical Sciences PAN

Board of Co-editors:

Artificial and Computational Intelligence
S. Osowski and B. Sawicki, Warsaw University of Technology

BiomedicalEngineering and Biotechnology
A. Liebert and R. Maniewski, Institute of Biocybernetics and Biomedical Engineering PAN


Civil Engineering
L. Czarnecki, Building Research Institute, ITB, Warsaw

Control,Robotics and Informatics
J. Klamka and A. Babiarz, Silesian Technical University

A. Borkowski, Institute of Fundamental Technological Research PAN

Electronics, Telecommunication and Optoelectronics
M. Mrozowski and A. Lamęcki, Gdansk University of Technology

W. Woliński, Warsaw University of Technology

Mechanical and Aeronautical Engineering, Thermodynamics
A. Styczek, and A. Tylikowski, Warsaw University of Technology

MaterialsScience and Nanotechnology
B. Major and P. Czaja, Institute of Metallurgy and Materials Science PAN
T.A. Kowalewski and B. Blachowski, Institute of Fundamental Technological Research PAN

PowerSystems and Power Electronics
M.P. Kazmierkowski, Warsaw University of Technology

International Editorial Advisory Board

I.V. Alexandrov, Ufa State Aviation Technical University, Russia
R. Asthana, University of Wisconsin-Stout, Menomonie, USA
Xu Binshi, China Association of Plant Engineering, Beijing, P.R. China
F. Blaabjerg, Aalborg University, Denmark

C. Cecati, University of L’Aquila, Italy

A. Cichocki, RIKEN Institute, Tokyo, Japan

M. David, National Polytechnique de Toulouse, France
R. Ebner, Materials Centre Leoben, Leoben, Austria
E. Fornasini, University of Padova, Padova, Italy

L.G. Franquelo, University of Seville, Spain

M. Gad-el-Hak, Virginia Commonwealth University, Richmond, USA

D. van Gemert, Catholic University Leuven, KU Leuven, Belgium

L. Keviczky, Hungarian Academy of Sciences, Budapest, Hungary
V. Kučera, Czech Technical University in Prague, Prague, Czech Republic

R. Kennel, Technical University Munich, Germany

E. Levi, Liverpool John Moore University, UK
G. Maier, Technical University of Milan, Milan, Italy

K.F. Man, City University of Hong Kong,
H.A. Mang
, Austrian Academy of Sciences, Vienna, Austria
H. Mihashi, Tohoku University, Aoba-ku, Sendai, Japan
S. Mindess, University of British Columbia, Vancouver, Canada
D.A. Mlynski, University of Karlsruhe, Karlsruhe, Germany
A.S. Nowak, University of Michigan, Ann Arbor, USA

K. Ohnishi, Keio University, Yokohama, Japan
A. Öberg, Linköping University, Linköping, Sweden

W. Pedrycz, University of Alberta, Canada
S. Przemieniecki, University of South Florida, Tampa, USA
M. Razeghi, Northwestern University, Evanston, USA
J. Rodriguez, Technical University of Federico Santa Maria, Valparaiso, Chile
J.V. Sloten, Catholic University Leuven, Leuven, Belgium

B.M. Wilamowski, University of Auburn, Alabama, USA
W. Włosiński, Warsaw University of Technology, Warsaw, Poland
A.L. Yarin, University of Illinois at Chicago, USA

Du Xiangwan, Chinese Academy of Engineering, China
J. Żurada, Department of Computer Engineering, University of Louisville, USA


Editorial Office:
Pałac Kultury i Nauki,
Wydział IV PAN,
PL 00-901 Warszawa
tel.: +48(22) 182 60 45
Mrs Ewa Trojanowska

Instrukcje dla autorów

About the Journal

The Bulletin of the Polish Academy of Sciences: Technical Sciences (Bull.Pol. Ac.: Tech.) is published by the Division IV Engineering Sciences of the Polish Academy of Sciences. The journal is peer‐reviewed and is published both in printed and electronic form ( is established for the publication of original high quality papers from multidisciplinary Engineering sciences with the following topics preferred:

• Artificial and Computational Intelligence,
• Biomedical Engineering and Biotechnology,
• Civil Engineering,
• Control, Informatics and Robotics,
• Electronics, Telecommunication and Optoelectronics,
• Mechanical and Aeronautical Engineering, Thermodynamics,
• Material Science and Nanotechnology,
• Power Systems and Power Electronics.


General data:


Format of the journal – A4 printed and electronic form,

Paper type – thick (chalk overlay) paper,

Colourfulness – full colour at an extra charge,

The volume of the journal – 250 pages (ca 30 papers) + 4 cover pages,

Frequency of publication – quarterly,

ISSN: 0239-7528 (print version),

ISSN: 2300-1917 (on line version),

DOI: 10.24425/bpasts




Journal citation: Bull. Pol. Ac.: Tech.

ISO: Bull. Pol. Acad. Sci.-Tech. Sci.,


Acronym in the Editorial System: BPASTS


Journal Metrics:


JCR Impact Factor 2018:                                                                 1.361

5 Year Impact Factor: 1.323
SCImago Journal Rank (SJR) 2017:                                                 0.319
Source Normalized Impact per Paper (SNIP) 2017:                     1.005
CiteScore 2017:                                                                              1.27

The Polish Ministry of Science and Higher Education 2017:      25 points

Manuscript types:

Invited reviews presenting the state of the knowledge and/or devoted to novel topics,
• Refereed research papers reporting on original scientific or technological achievements,
• Refereed papers in special issues/sections serving as conference proceedings arranged by guest editors.


Submission Policy


All manuscripts submitted for publication should be original. Manuscripts published or under consideration for publication elsewhere should not be submitted and will not be considered. Submission of a paper implies that it has not been published previously, that it is not under consideration for publication elsewhere, a, nd that if accepted it will not be published elsewhere in the same form, in English or in any other language, without the written consent of the Publisher.


 Manuscript submission for review

The Bull. Pol. Ac.: Tech is now employing a Web-based manuscript submission and peer-review tracking system called Editorial System. Authors must submit their manuscript electronically on the web From this entry page, access can be obtained to all information required for the submission of a manuscript. First‐time users must create an Author’s account to obtain a user ID and password required to enter the system. All manuscripts receive individual identification codes that should be used in any correspondence with regard to the publication process. For the authors already registered in the Editorial System it is enough to enter their username and password to login as an author (Sign in). Author(s) will be notified about registration and manuscript review process by e-mail.
The manuscripts must be uploaded as a single PDF file.
If you experience difficulties with the manuscript submission website, please contact the Editorial Office of the Bull. Pol. Ac.: Tech (Mrs Ewa Trojanowska: or Mrs Anna Jurkiewicz of authors and their affiliation should be removed from the manuscripts for the review process in order to have a fair evaluation of their manuscript. All authors of the manuscript are responsible for its content; they must have agreed to its publication and have given the corresponding author the authority to act on their behalf in all matters pertaining to publication. The Corresponding Author is responsible for informing the coauthors of the manuscript status throughout the submission, review, and production process.

 Manuscript preparation

1. The manuscript should be written in clear and concise English (UK version).

2. For manuscript preparation please use the Word or LaTeX template available in the Information for Authors on

3. Please remember, that in the .pdf version of the manuscript uploaded in the Editorial System for evaluation process, author(s) name(s) and affiliation should be removed.

4. Authors should consult a recent issue of the journal for style if possible.

Manuscript decision and Proofs:

Manuscript evaluations are assigned one of four outcomes: Accept, Minor Revisions, Major Revisions, and Reject. Manuscripts requiring "Minor Revision" not require a second review. All manuscripts receiving a "Major Revision" evaluation must be subjected to a second review. Rejected manuscripts are given no further consideration. Normally, manuscripts that receive a "Major Revision" decision have only one additional chance for revision and the revised version should be uploaded to the Editorial System within six weeks. If the author(s) failed to make satisfactory changes, the manuscript is rejected. On acceptance, manuscripts are subject to editorial amendment to suit house style.

Transfer of Copyright Agreement

Once the paper is initially accepted, the authors are assumed to have transferred the copyright of the paper to the publisher. Please fill the Form, available on the webpage

Sign it, and add to the final version of the manuscript as separate .pdf file.

Proofs will be sent to the author (first named author if no corresponding author is identified of multi-authored papers) and should be returned within48 hours of receipt.

Fees for printing the article

The Bulletin of the Polish Academy of Sciences: Technical Sciences (Bull.Pol. Ac.: Tech.) is published in Open Access, which means that all articles are available on the internet to all users immediately upon publication free of charge for the readers. Authors are invited so a declaration that they are ready to cover the costs of printing their article. In addition, each color page will be charged an additional fee according to the current cost of printing. Otherwise, the paper will be printed in black-white.

More details see in Information for Authors:

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