Search results for: dome structures.

• Scattering and Propagation Analysis for the Multilayered Structures Based on Field Matching Technique

  Publication

  • M. Warecka
  • R. Lech
  • P. Kowalczyk

  - Year 2019

  A semi-analytical method is employed to the analysis of scattering and guiding problems in multilayer dielectric structures. The approach allows to investigate objects with arbitrary convex cross section and is based on the direct field matching technique involving the usage of the field projection at the boundary on a fixed set of orthogonal basis functions. For the scattering problems the scattered field in the far zone is calculated...

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• Guided Wave Propagation in Detection of Partial Circumferential Debonding in Concrete Structures

  Publication

  • B. Zima

  - SENSORS - Year 2019

  The following article presents results of investigating the damage detection in reinforced concrete beams with artificially introduced debonding between the rod and cover, using a non-destructive method based on elastic waves propagation. The primary aim of the research was to analyze the possible use of guided waves in partial circumferential debonding detection. Guided waves were excited and registered in reinforced concrete...

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• An Efficient PEEC-Based Method for Full-Wave Analysis of Microstrip Structures

  Publication

  • J. Ma
  • D. Li
  • H. Ma
  • R. Li
  • L. Zhang
  • M. Mrozowski
  • E. Li

  - IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY - Year 2024

  This article introduces an efficient method for the equivalent circuit characterization and full-wave analysis of microstrip structures, leveraging the full-wave partial element equivalent circuit (PEEC). In particular, the multilayered Green's function is evaluated using the discrete complex-image method (DCIM) and employed to establish the mixed potential integral equations. The proposed strategy considers time delays for the...

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• Technologies for Joining and Forming Thin-Walled Structures in the Construction of Transportation Vehicles

  Publication

  • D. Fydrych
  • A. Kubit
  • J. Slota
  • A. Kowalczyk

  - Materials - Year 2023

  Editorial

  Full text available to download

• On EM-driven size reduction of antenna structures with explicit constraint handling

  Publication

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - IEEE Access - Year 2021

  Simulation-driven miniaturization of antenna components is a challenging task mainly due to the presence of expensive constraints, evaluation of which involves full-wave electromagnetic (EM) analysis. The recommended approach is implicit constraint handling using penalty functions, which, however, requires a meticulous selection of penalty coefficients, instrumental in ensuring optimization process reliability. This paper proposes...

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• Performance-driven yield optimization of high-frequency structures by kriging surrogates

  Publication

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - Applied Sciences-Basel - Year 2022

  Uncertainty quantification is an important aspect of engineering design, as manufacturing toler-ances may affect the characteristics of the structure. Therefore, quantification of these effects is in-dispensable for adequate assessment of the design quality. Toward this end, statistical analysis is performed, for reliability reasons, using full-wave electromagnetic (EM) simulations. Still, the computational expenditures associated...

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• Optimized Stress and Geometry Control of Spherical structures under Lateral Loadings

  Publication

  • A. Mahmood
  • J. Katebi
  • N. Saeed
  • A. Manguri

  - Year 2022

  In this paper, a numerical model of a double-layer spherical structure has been examined under lateral loadings. When the structure has been distorted due to loadings, the dislocated joints have been moved to their original positions utilizing the adjustment techniques based on the force method. Meanwhile, the members’ internal forces were kept in the desired domain. Optimization techniques were also implemented in order to minimalize...

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• A coarse‐grained approach to NMR ‐data‐assisted modeling of protein structures

  Publication

  • E. Lubecka
  • A. Liwo

  - JOURNAL OF COMPUTATIONAL CHEMISTRY - Year 2022

  The ESCASA algorithm for analytical estimation of proton positions from coarse-grained geometry developed in our recent work has been implemented in modeling protein structures with the highly coarse-grained UNRES model of polypeptide chains (two sites per residue) and nuclear magnetic resonance (NMR) data. A penalty function with the shape of intersecting gorges was applied to treat ambiguous distance restraints, which automatically...

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• Conditional random field simulation of ground motions for large shell structures.

  Publication

  • R. Jankowski

  - Year 2002

  Zaprezentowano metodę stochastycznego modelowania efektu propagacji fali trzęsienia ziemi i analizowano wpływ tego efektu na konstrukcje powłokowe znacznych rozmiarów. Symulowane przy użyciu tej metody rejestry trzęsień ziemi w wybranych punktach podporowych mogą być wykorzystane do analizy dynamicznej zachowania się konstrukcji. Przykładem analizowanej konstrukcji budowlanej jest zbiornik cylindryczny o średnicy 100 m.

• Pounding of structures during earthquakes modelled by nonlinear viscoelastic impact element.

  Publication

  • R. Jankowski

  - Year 2003

  Analizowano zderzenia konstrukcji budowlanych podczas trzęsień ziemi wykorzystując model lepkosprężysty siły zderzenia. W analizie, zachowanie konstrukcji o różnych własnościach dynamicznych symulowane jest modelem dyskretnym o skupionych masach. wyniki badań pokazują, iż zderzenie może prowadzić do znacznego wzrostu odpowiedzi konstrukcji mniej sztywnej i lżejszej.

• On long-term prediction of stresses in principal members of ship hull structures.

  Publication

  • M. Bogdaniuk

  - Year 2004

  Opisano krytycznie wymagania towarzystw klasyfikacyjnych dotyczące oceny wytrzymałości wzdłużnych wiązarów i wzdłużnych usztywnień poszycia kadłuba statku. Przedstawiono sposób prognozowania długoterminowego dynamicznych składowych tych naprężeń oraz zaproponowano sposób składania charakterystycznych wartości poszczególnych składowych naprężeń do zastosowania w przepisach Polskiego Rejestru Statków. Sposób ten bazuje na koncepcji...

• Probabilistic limit state analysis of framed structures. The Monte Carlo simulation.

  Publication

  • M. Skowronek

  - Year 2004

  W pracy opisano koncepcję rozkładu prawdopodobieństwa stanu granicznego konstrukcji. Koncepcja ta oparta jest na problemowo zorientowanej procedurze symulacyjnej Monte Carlo. Niezawodnosć lub prawdopodobieństwo awarii układu oblicza się na podstawie rozkładu prawdopodobieństwa stanu granicznego.

• Photoenhanced current as a tool for investigating non-uniform structures of tetracene layer.

  Publication

  • D. Kotowski
  • B. Kutrzeba-Kotowska
  • J. Godlewski

  - Year 2004

  Powierzchniowe prądy fotowzmocnione używane były jako narzędzie do badań fizycznych własności powierzchni warstw od strony podłoża, a także od strony przeciwległej podłożu.

• Probabilistic limit state analysis of framed structures. The Monte Carlo simulation.

  Publication

  • M. Skowronek

  - Year 2004

  W pracy opisana jest koncepcja rozkładu prawdopodobieństwa stanu granicznego konstrukcji, oparta na specjalnej procedurze symulacyjnej Monte Carlo. Główną ideę stanowi obliczenie mnożnika obciażenia granicznego w każdym kroku symulacyjnym. Niezawodnosć lub prawdopodobieństwo awarii konstrukcji sa charakterystykami rozkładu prawdopopdobieństwa stanu granicznego. Szczegółowo opisano dwa warianty symulacji.

• Probability of limit state of bar structures. A modified Monte Carlo procedure

  Publication

  • M. Skowronek

  - Archives of Civil Engineering - Year 2005

  Praca poświecona jest zagadnieniom niezawodności i probabilistycznej analizie stanów granicznych układów prętowych. Główną ideę pracy stanowi rozkład prawdopodobieństwa stanu granicznego nośności ustroju, zdefiniowany na podstawie specjalnej procedury symulacyjnej Monte Carlo. W procedurze tej istotne jest wyznaczanie mnożników obciążenia granicznego w każdym kroku symulacyjnym. Charakterystykami rozkładu prawdopodobieństwa stanu...

• Evaluation of reinforcement corrosion rate in concrete structures by electrochemical noise measurements

  Publication

  • J. Smulko
  • K. Darowicki
  • A. Zieliński

  - RUSSIAN JOURNAL OF ELECTROCHEMISTRY - Year 2006

  W pracy przedstawiono wyniki obliczeń rezystancji polaryzacyjnej w układzie złożonym z dwóch elektrod (ze stali węglowej oraz elektrody odniesienia), umieszczonych w otulinie betonowej. Szybkość korozji ulega zmianom uzależnionym od stopnia nasiąknięcia betonu roztworem zawierającym jony chlorkowe. Zmiany rezystancji polaryzacyjnej elektrody stalowej oceniane są na podstawie pomiarów prądowego i potencjałowego szumu elektrochemicznego....

• Experimental Investigation of Elastic Waves Propagation in 1D and 2D Structures with Faults.

  Publication

  • M. Krawczuk
  • P. Kudela
  • W. Ostachowicz
  • M. Palacz
  • A. Żak

  - Year 2006

  W pracy omówiono wyniki pomiarów fal sprężystych w prętach, belkach i płytach z uszkodzeniami.

• Depth profile of the gold-silver bimetallic structures

  Open Research Data

  open access

  • M. Łapiński

  Silver and gold bimetallic layers were deposited on a silicon substrate by magnetron sputtering method. Both, Au and Ag layers had 3 nm of thickness. That prepared nanostructures were measured by XPS method. To obtain a depth profile of chemical composition, an Argon ion (Ar+) gun was used for etching surface of sample. Each cycle of etching takes 30...

• Plasmon resonance in a TiO2-Au NPs structures

  Open Research Data

  open access

  • M. Łapiński

  Investigated structures were deposited on a pre cleaned Corning 1737 glass substrates, which provided flat optical transmission characteristics and high transmission coefficient in a visible light range. Plasmonic nanostructures were formed as a result of thermal annealing. For gold films with thickness of 2.8 nm depiction a table-top dc magnetron sputtering...

• Gold nanocubic structures functionalization with organic layers

  Open Research Data

  restricted access

  • J. Ryl
  • P. Niedziałkowski

  - series: Electrochemical Au-Minecraft: a new approach towards the impedimetric biosensing system

  This dataset contains the XPS spectra obtained for gold nanocubes (AuNC), which were deposited at the gold electrode surface and dried. The AuNC's were first functionalized with either cysteamine in EtOH or mercaptopropionic acid in EtOH. The concentration of these compounds was 20 mM. The interaction of the functionalized with the AuNC surface was...

• Marcin Kujawa dr hab. inż.

  People

  Structural Mechanics Department

  I have graduated from the Faculty of Civil Engineering, Gdańsk University of Technology (https://pg.edu.pl/en) in 1999. I received my M.Sc. degree in civil engineering structures with specialization in bridge structures. Next,  in 2007, I received my doctoral degree in technical sciences under the supervision of professor Czesław Szymczak (Scopus Author ID: 6603993146) at the Faculty of Civil Engineering, Gdańsk University of Technology....

• Bulletin de l'Institut Historique belge de Rome. Bulletin van het Belgisch Historisch Instituut te Rome

  Journals

  ISSN: 0073-8530

• Robert Bogdanowicz dr hab. inż.

  People

  Department of Metrology and Optoelectronics

  Robert Bogdanowicz received his Ph.D. degree with honours in Electronics from the Gdansk University of Technology. He worked as a post-doc researcher in Ernst-Moritz-Arndt-Universität Greifswald Institut für Physik. He has initiated optical emission imaging of muti-magnetron pulsed plasma and contributed to the development of antibacterial implant coatings deposited by high-power impulse magnetron sputtering. He moved back to...

• Predicting the seismic collapse capacity of adjacent SMRFs retrofitted with fluid viscous dampers in pounding condition

  Publication

  • F. Kazemi
  • B. Mohebi
  • R. Jankowski

  - MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Year 2021

  Severe damages of adjacent structures due to structural pounding during earthquakes have emphasized the need to use some seismic retrofit strategy ‎to enhance the structural performance. ‎The purpose of this paper is to study the influence of using linear and nonlinear Fluid Viscous Dampers (FVDs) on the seismic collapse capacities of adjacent structures prone to pounding and proposing modification factors to modify the ‎median...

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• Mélanges de l'École française de Rome. Antiquité

  Journals

  ISSN: 1724-2134 , eISSN: 0223-5102

• Journal of Global Mobility-The Home of Expatriate Management Research

  Journals

  ISSN: 2049-8799 , eISSN: 2049-8802

• Tensile test of 1.4571 / X6CrNiMoTi17-12-2 / AISI 316Ti grade austenitic steel

  Open Research Data

  open access

  • J. Kowalski

  Ship structures and their components are build mainly of steel. Hull steel is used to build the hull structure. Some structural elements, such as RSW (Refrigerated See Water) tanks, or LNG (Liquid Natural Gas) tanks - gas transported at temperatures below -162° C, are build from austenitic steels. Austenitic steels have a different microstructure and...

• Electrochemicalsynthesis of 3D nano-/micro-structured porous polypyrrole

  Publication

  • K. Cysewska
  • J. Karczewski
  • P. Jasiński

  - MATERIALS LETTERS - Year 2016

  In this work, electrosynthesis of electroactive, 3D nano-/micro-structured porous polypyrrole film is presented. The PPy film was synthesized potentiostatically in a one-step process from aqueous solution of pyrrole and lithium perchlorate. The growth mechanism of such structure included: the formation of typical globular PPy film, followed by the formation of the PPy fibers, which then took part in the formation of 3D highly porous...

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• Structured triacylglicerols containing behenic acid: preparation and properties

  Publication

  • M. Tynek
  • E. Ledóchowska

  - Year 2005

  Niskokaloryczne lipidy strukturyzowane otrzymano na drodze przeestryfikowania właściwego oleju oliwkowego całkowicie uwodornionym wysokoerukowym olejem rzepakowym (TAG/SLHE) oraz na drodze acydolizy oleju oliwkowego kwasem behenowym (TAG/SLB). Reakcje były katalizowane Lipozyme RM IM. Tłuszcz (TAG/SLHE) charakteryzował się wysoką temperaturą topnienia - 45,5 st. C, natomiast tłuszcz (TAG/SLB) miał temperaturę topnienia 37,5 st.C...

• Advanced Mechanics of Marine Structures I, MSc, Summer 2022-2023, [L,T], PG_00051723

  e-Learning Courses

  • B. Rozmarynowski

  1.  Literature overview,  definition of marine and offshore structures, ocean engineering technologies and mechanical aspects, structural systems applied, jack-up drilling platforms and structural elements. 2. Tensor algebra fundamentals,  stress and small strain states of a solid, constitutive relations. 3. SDOF and MDOF dynamic systems, damping and added masses in offshore vibrations,  generalised eigenvalue problem, forced vibrations...

• Journal of Structural Learning and Intelligent Systems

  Journals

  ISSN: 1027-1015

• Journal of Civil Structural Health Monitoring

  Journals

  ISSN: 2190-5452 , eISSN: 2190-5479

• Advances in Protein Chemistry and Structural Biology

  Journals

  ISSN: 1876-1623

• INTERNATIONAL JOURNAL MATERIALS &STRUCTURAL RELIABILITY

  Journals

  ISSN: 1685-6368

• Practice Periodical on Structural Design and Construction

  Journals

  ISSN: 1084-0680 , eISSN: 1943-5576

• International Journal of Advanced Structural Engineering

  Journals

  ISSN: 2008-3556

• International Journal of Materials and Structural Integrity

  Journals

  ISSN: 1745-0055

• SDHM Structural Durability and Health Monitoring

  Journals

  ISSN: 1930-2983

• Proceedings of International Structural Engineering and Construction

  Journals

  eISSN: 2644-108X

• Journal of Applied Structural Equation Modeling

  Journals

  eISSN: 2590-4221

• International Journal of Structural Stability and Dynamics

  Journals

  ISSN: 0219-4554 , eISSN: 1793-6764

• Structural Heart-The Journal of the Heart Team

  Journals

  ISSN: 2474-8706 , eISSN: 2474-8714

• STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS

  Journals

  ISSN: 1541-7794 , eISSN: 1541-7808

• Structural Equation Modeling: A Multidisciplinary Journal

  Journals

  ISSN: 1070-5511 , eISSN: 1532-8007

• STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL

  Journals

  ISSN: 1475-9217 , eISSN: 1741-3168

• The influence of microstructure on the corrosion resistance for some titanium-based alloys

  Open Research Data

  open access

  • J. Ryl
  • J. Wysocka
  • M. Amin

  This dataset contains scanning electron microscopy (SEM) micrographs revealing the microstructure of some Ti-based alloys, namely: Ti-6Al-4V (file name: TiV), Ti-6Al-7Nb (file name: TiNb) and TC21 (file name: TiAlSnZrMoCrNbSi) alloys and their localized corrosion as a result of passive layer breakdown in a corrosive environment, ie. 0.9% NaCl solution...

• Dimethyl ether (DME) as potential environmental friendly fuel

  Publication

  • J. Sobczak

  - Year 2019

• DME as alternative fuel for compression ignition engines – a review

  Publication

  • D. Stepanenko
  • Z. Kneba

  - Combustion Engines - Year 2019

  The ecological issues and the depletion of crude oil, has led the researchers to seeking for non-petroleum based alternative fuels, along with more advanced combustion technologies, and after-treatment systems. The use of clean alternative fuels is the one of the most perspective method that aiming at resolving of the said issues. One of the promising alternative fuels that can be used as a clean highefficiency compression ignition...

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• Dimethyl ether (DME) as potential environmental friendly fuel

  Publication

  • P. Makoś-Chełstowska
  • E. Słupek
  • J. Sobczak
  • D. Zabrocki
  • J. Hupka
  • A. Rogala

  - E3S Web of Conferences - Year 2019

  In recent years, there has been a growing interest in replacing petroleum fuels with so-called second generation environmental friendly fuels. Compared to traditional petroleum fuels dimethyl ether (DME) could be used as a clean high-efficiency compression ignition fuel with reduced particulate matter (PM), sulfur oxides (SOx), hydrocarbons (HC), carbon monoxide (CO) as well as combustion noise. Compared to some of the other leading...

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• DOM KASZUBSKI NA ZIEMI ZABORSKIEJ. smaki dziedzictwa

  Publication

  • A. Kurkowska

  - Year 2021

  Ogólnopolska wystawa plastyczna miała miejsce w Wielu jako element projektu pt. „Smaki ziemi zaborskiej. Dziedzictwo przyrodnicze i kulturowe” zaplanowanego w ramach 19. Europejskich Dni Dziedzictwa. Współorganizatorami byli: Wydział Architektury Politechniki Gdańskiej - Agnieszka Kurkowska,kuratorka ) i Dom Kultury im. H. Derdowskiego w Wielu/ Muzeum Ziemi Zaborskiej. Wystawa tematycznie dotyczyła wysmakowanej architektury...