Search results for: WELDABLE STEELS

• JOURNAL OF TRAUMATIC STRESS

  Journals

  ISSN: 0894-9867 , eISSN: 1573-6598

• NUCLEAR DATA SHEETS

  Journals

  ISSN: 0090-3752 , eISSN: 1095-9904

• International Journal of Reliable and Quality E-Healthcare

  Journals

  ISSN: 2160-9551 , eISSN: 2160-956X

• Hydrogen degradation of structural steels in technical hydrocarbon liquids

  Publication

  • B. Świeczko-Żurek
  • A. Zieliński
  • E. Łunarska

  - MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION - Year 2008

  Dla stali stopowych przeprowadzono badania absorpcji wodoru, mechaniczno-korozyjne przy stałej małej prędkości odkształcania, przy stałym obciążeniu i przy obciążeniu cyklicznie-zmiennym. Środowiskiem było paliwo kotłowe, przepracowany olej mineralny oraz gliceryna. Stwierdzono, iż pochłonięty wodór nie powoduje przedwczesnego zniszczenia stali poddanych działaniu stałego obciążenia ponizej granicy plastyczności oraz, że zaabsorbowany...

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• Environmental degradation of the Cr-Mo steels in liquid hydrocarbons

  Publication

  • B. Świeczko-Żurek

  - Advances in Materials Science - Year 2006

  Przedstawiono podatność stali stopwych 26H2MF i 34HNM do naprężeniowego pękania korozyjnego. Środowiskiem do badań było paliwo ciężkie i zużyty olej mineralny.

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• Corrosion behavior of vacuum sintered duplex stainless steels

  Publication

  • L. Dobrzański
  • Z. Brytan
  • M. Actis
  • M. Rosso
  • Z. Brytan

  - Journal of Materials Processing Technology - Year 2007

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• The corrosion resistance of laser surface alloyed stainless steels

  Publication

  • Z. Brytan
  • Z. Brytan

  - Journal of Achievements in Materials and Manufacturing Engineering - Year 2018

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• Weldability of high strength steels in wet welding conditions

  Publication

  • D. Fydrych
  • J. Łabanowski
  • G. Rogalski

  - Polish Maritime Research - Year 2013

  In this paper are characterized problems of high strength steel weldability in underwater wet welding conditions. Water as a welding environment intensifies action of unfavourable factors which influence susceptibility to cold cracking of welded steel joints. The susceptibility to cold cracking of S355J2G3 steel and S500M steel in wet conditions was experimentally estimated (by using Tekken test). It was concluded that the steels...

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• The Application of Cluster Analysis in the Assessment of the Weldability of Unalloyed Steels

  Publication

  • A. Szewczyk
  • K. Górska
  • A. Wolski
  • D. Fydrych

  - Biuletyn Instytutu Spawalnictwa w Gliwicach - Year 2023

  Non-alloy steels constitute a large group of steels characterised by diversified chemical composition, structural morphology and a wide range of mechanical properties (determining weldability). The paper presents results of multidimensional analyses (based on cluster analysis) of 110 selected unalloyed steel grades. Properties adopted as diagnostic features included the chemical composition, mechanical properties (yield point)...

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• Hydrogen degradation of high strength low alloyed steels.

  Publication

  • P. Domżalicki
  • A. Zieliński

  - JOURNAL OF MATERIALS PROCESSING TECHNOLOGY - Year 2003

  Badano wpływ polaryzacji katodowej na własności stali węglowej, stali o podwyższonej i wysokiej wytrzymałości metodą stałego powolnego odkształcania.Stwierdzono, że stopień kruchości wodorowej każdej z badanych stali zależał od stężenia wodoru dyfuzyjnego.

• Investigations of welded joints of dissimilar heat resistant steels.

  Publication

  • I. Wishniakas
  • J. Łabanowski

  - Materiały i Technologie : roczniki naukowe Pomorskiego Oddziału PTM - Year 2003

  Przeprowadzono badania metalograficzne połączeń spawanych różnorodnych stali żarowytrzymałych rur o przekroju 31,8x7,1 mm ze stali 10H2M z blachą ze stali 20H23N18. Badania makro- i mikrostruktury złączy spawanych wykazały, że istotnym czynnikiem wpływającym na właściwości mechaniczne złącza jest obecność wad takich jak pory lub wtrącenia żużla. Te nieciągłości w materiale powodują koncentrację naprężeń i powstawanie mikropęknięć.

• The effect of numerical 2D and 3D FEM element modelling on strain and stress distributions at laser weld notches in steel sandwich type panels

  Publication

  • K. Niklas
  • J. Kozak

  - Polish Maritime Research - Year 2018

  Like other means of transport, merchant ships face the problem of increasing requirements concerning the environment protection, which, among other issues, implies the reduction of fuel consumption by the ship. Here, the conventional approach which consists in making use of higher strength steels to decrease the mass of the ship hull can be complemented by the use of new steel structures of sandwich panel type. However, the lack...

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• Kang T'ieh/Iron and Steel (Peking)

  Journals

  ISSN: 0449-749X

• JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL

  Journals

  ISSN: 1006-706X , eISSN: 2210-3988

• A Compact Circularly Polarized Antenna With Directional Pattern for Wearable Off-Body Communications

  Publication

  • U. Ullah
  • I. Mabrouk
  • S. Kozieł

  - IEEE Antennas and Wireless Propagation Letters - Year 2019

  This letter presents a geometrically simple and compact circularly polarized (CP) antenna with unidirectional radiation characteristics for off-body communications. The proposed antenna is based on a microstrip line monopole extension from a coplanar waveguide (CPW) and a protruded stub from one side of the coplanar ground plane along the length of the monopole. The orthogonal components of equal amplitudes required for circular...

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• Selection of reliable reference genes in eutopic and ectopic endometrium for quantitative expression studies

  Publication

  • M. Andrusiewicz
  • B. Słowikowski
  • I. Skibińska
  • M. Wołuń-Cholewa
  • A. Dera-Szymanowska

  - BIOMEDICINE & PHARMACOTHERAPY - Year 2016

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• Objective relaxation algorithm for reliable simulation-driven size reduction of antenna structure

  Publication

  • S. Kozieł

  - IEEE Antennas and Wireless Propagation Letters - Year 2017

  This letter investigates reliable size reduction of antennas through electromagnetic-driven optimization. It is demonstrated that conventional formulation of the design task by direct footprint miniaturization with imposing constraints on electrical performance parameters may not lead to optimum results. The reason is that—in a typical antenna structure—only a few geometry parameters explicitly determine the antenna footprint,...

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• Reliable Greedy Multipoint Model-Order Reduction Techniques for Finite-Element Analysis

  Publication

  • G. Fotyga
  • M. Mul
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Antennas and Wireless Propagation Letters - Year 2018

  A new greedy multipoint model-order reduction algorithm for fast frequency-domain finite-element method simulations of electromagnetic problems is proposed. The location of the expansion points and the size of the projection basis are determined based on a rigorous error estimator. Compared to previous multipoint methods, the quality of the error estimator is significantly improved by ensuring the orthogonality of the projection...

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• A Compact Basis for Reliable Fast Frequency Sweep via the Reduced-Basis Method

  Publication

  • V. de la Rubia
  • M. Mrozowski

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Year 2018

  A reliable reduced-order model (ROM) for fast frequency sweep in time-harmonic Maxwell’s equations by means of the reduced-basis method is detailed. Taking frequency as a parameter, the electromagnetic field in microwave circuits does not arbitrarily vary as frequency changes, but evolves on a very low-dimensional manifold. Approximating this low-dimensional manifold by a low dimension subspace, namely, reduced-basis space, gives...

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• Implementation of DEIS for reliable fault monitoring and detection in PEMFC single cells and stacks

  Publication

  • K. Darowicki
  • E. Janicka
  • M. Mielniczek
  • A. Zieliński
  • Ł. Gaweł
  • J. Mitzel
  • J. Hunger

  - ELECTROCHIMICA ACTA - Year 2018

  Dynamic Electrochemical Impedance Spectroscopy (DEIS) was presented as novel method for diagnostic and monitoring of PEMFC stack and single cells operation. Impedance characteristics were obtained simultaneously with current - voltage characteristics for stack and each individual cell. Impedance measurements were performed in galvanodynamic mode. It allowed to compare performance of each cell and identification of faulty cell operation...

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• Generating reliable conformance test suites for parallel and distributed languages, libraries, and APIs.

  Publication

  • Ł. Garstecki

  - Year 2004

  Artykuł nakreśla nową metodykę dla tworzenia Zestawów Testów Zgodności (ZTG) dla języków, bibliotek i API programowania równoległego i rozproszonego. Autor rozpoczął swoje badania w zakresie testowania zgodności dla języka równoległego sterowanego danymi Athapascan, opracował metodykę dla projektowania i analizowania ZTG nazwaną Metodą Kolejnych Zawężeń (ang. Consecutive Confinements Methods - CoCoM), stworzył narzędzie CTS Designer,...

• Endogenous Polyamines and Ethylene Biosynthesis in Relation to Germination of Osmoprimed Brassica napus Seeds under Salt Stress

  Publication

  • K. Lechowska
  • Ł. Wojtyla
  • M. Quinet
  • S. Kubala
  • S. Lutts
  • M. Garnczarska

  - International Journal of Molecular Sciences - Year 2021

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• On the rehabilitation of steel constructions

  Publication

  • A. Ambroziak
  • P. Kłosowski

  - Year 2005

  W pracy dokonano krótkiego przeglądu literatury z zakresu rewitalizacji i rehabilitacji konstrukcji stalowych. Omówiono podstawowe aspekty rewitalizacji i odnowy tego typu obiektów.

• Ireneusz Kreja dr hab. inż.

  People

  Structural Mechanics Department

  Graduated from the mathematical class at the Nicolaus Copernicus High School in Gdańsk (1974). Master of Sciences in Civil Engineering after studies at Gdansk University of Technology (GUT), Poland (1974-1979). Since 1979 became an employee of the GUT. In 1989 earned a Ph.D. degree in Civil Engineering (with grade "Summa cum Laude") from the GUT. In 2008 obtained a D. Sc. (Habilitation) degree in Civil Engineering (with grade...

• Analysis of EN 1993-1-6 guidelines about determining amplitudes of equivalent imperfections of steel cylindrical shells subjected to uniform external pressure

  Publication

  • T. Heizig

  - Year 2014

  Civil engineering structures should be designed with reference to relevant standards. One of them is a Eurocode 3 standard EN 1993-1-6:2007: Design of steel structures Part 1-6: Strength and Stability of Shell Structures. According to this standard, the value of buckling load can be determined using different approaches: classical hand calculations (stress design) and geometrical and material non-linear analysis of an imperfect...

• The temperature dependencies of susceptibility of 654SMO and 316L stainless steels to pitting

  Publication

  • K. Darowicki
  • S. Krakowiak
  • K. Darowicki

  - ANTI-CORROSION METHODS AND MATERIALS - Year 2000

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• Corrosion resistance of dissimilar austenite and duplex steels welded joints

  Publication

  • J. Łabanowski

  - Advances in Materials Science - Year 2007

  W artykule przedstawiono wpływ warunków spawania, a zwłaszcza energii liniowej, na odporność korozyjną złączy różnoimiennych stali austenitycznej 316L i typu duplex 2203. Przedstawiono wyniki testów korozyjnych:korozji wżerowej wg ASTM G48 oraz korozji naprężeniowej badanej w próbach odkształcania z małą pędkością w środowisku roztworu chlorku magnezowego.

• Effect of microstructure on impact toughness of duplex and superduplex stainless steels

  Publication

  • S. Topolska
  • J. Łabanowski

  - Journal of Achievements in Materials and Manufacturing Engineering - Year 2009

  W artykule przedstawiono wpływ wyżarzania stali dupleks 2205 i superdupleks 2507 na przemiany strukturalne oraz udarność. Obróbkę cieplną przeprowadzono w zakresie temperatur 500-900C i w czasie 6 - 600 min. Określono i porównano podatność obu stali do zmian właściwości po wyżarzaniu

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• Computer aided materials design of PM duplex stainless steels

  Publication

  • L. Dobrzanski
  • Z. Brytan
  • M. Grande
  • M. Rosso

  - International Journal of Computational Materials Science and Surface Engineering - Year 2007

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• Hydrogen degradation of 26H2MF and 34HNM steels used in ship engines.

  Publication

  • A. Zieliński
  • E. Łunarska
  • P. Michalak
  • W. Serbiński

  - Year 2004

  Przedstawiono wyniki badań podatności stali 26H2MF i 34HNM na niszczenie wodorowe, uzyskane po badaniach w roztworze kwasu siarkowego przy równoczesnej polaryzacji katodowej. Wykazano, że skład i obróbka cieplna stali mają wpływ na ich podatność. Efejkt ten przypisano różnej zdolności pułapkowania wodoru przez stale.

• Evaluation of susceptibility of high-strength steels to hydrogen delayed cracking

  Publication

  • B. Świeczko-Żurek
  • S. Sobieszczyk
  • J. Ćwiek
  • A. Zieliński

  - Journal of Achievements in Materials and Manufacturing Engineering - Year 2006

  Przedstawiono wyniki badań podatności na opóźnine pękanie wodorowe stali o wysokiej wytrzymałości w oparciu o próbę stałego obciążenia. Badano stal do pracy w podwyższonych temperaturach 26H2MF oraz stal do ulepszania cieplnego 34HNM w środowisku przepracowanego oleju silnikowego. Badano również stal 14HNMBCu i jej złącza spawane w środowisku wody morskiej przy polaryzacji katodowej.

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• Advanced vanadium modified steels for high pressure hydrogen reactors

  Publication

  • J. Hucińska

  - Advances in Materials Science - Year 2003

  Przedstawiono nową generację stali chromowo-molibdenowych zmodyfikowanych wanadem, przeznaczonych do budowy wodorowych reaktorów i porównano ze stalami konwencjonalnymi. Opisano mikrostrukturę, właściwości i zastosowanie stali. Podkreślono wpływ mikrostruktury nowych stali na przebieg degradacji środowiskowej.

• Wpływ obecności i struktury warstwy azotowanej oraz stanu naprężeń na niszczenie wodorowe stali = Effect of presence and structure of nitrided layer, and stress state on hydrogen degradation of steels

  Publication

  • M. Błaszkiewicz
  • A. Zieliński
  • J. Ćwiek

  - Year 2006

  Przedstawiono wyniki badań wpływu azotowania według dwóch technologii na niszczenie wodorowe stali stopowej, oceniane w próbach powolnego rozciągania. Różną podatność na niszczenie wodorowe przypisano różnej mikrostrukturze warstw azotowanych oraz stanom naprężeń, wpływającym na dyfuzję i pułapkowanie wodoru.

• Biomass as a reliable renewable energy source in the fulfilling the white paper poland-eu requirements

  Publication

  • W. Lewandowski
  • E. Klugmann-Radziemska
  • M. Ryms
  • K. Ciunel

  - Year 2010

  Zgodnie z wytycznymi z Białej Księgi Unii Europejskiej, wzrost wykorzystania odnawialnych źródeł energii powinien osiągnąć 7,5% w 2010 r. i 14% w 2020 r. o ogólnym zużyciu energii w Polsce. Analizę sytuacji energetycznej Polska w przeszłości i przewidywania zmian globalnych i regionalnych w odniesieniu do produkcji i zużycia energii, prowadzą do wniosku, że biomasa może być możliwym źródłem energii odnawialnej dla realizacji tych...

• Comparative analysis of positioning accuracy of Garmin Forerunner wearable GNSS receivers in dynamic testing

  Publication

  • T. Szot
  • C. Specht
  • P. S. Dąbrowski
  • M. Specht

  - MEASUREMENT - Year 2021

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• Design specification management with automated decision-making for reliable optimization of miniaturized microwave components

  Publication

  • S. Kozieł
  • A. Pietrenko-Dąbrowska
  • P. Płotka

  - Scientific Reports - Year 2022

  The employment of numerical optimization techniques for parameter tuning of microwave components has nowadays become a commonplace. In pursuit of reliability, it is most often carried out at the level of full-wave electromagnetic (EM) simulation models, incurring considerable computational expenses. In the case of miniaturized microstrip circuits, densely arranged layouts with strong cross-coupling effects make EM-driven tuning...

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• Ship weather routing optimization with dynamic constraints based on reliable synchronous roll prediction

  Publication

  • P. Krata
  • J. Szłapczyńska

  - OCEAN ENGINEERING - Year 2018

  Ship routing process taking into account weather conditions is a constrained multi-objective optimization problem and it should consider various optimization criteria and constraints. Formulation of a stability-related, dynamic route optimization constraint is presented in this paper. One of the key objectives of a cross ocean sailing is finding a compromise between ship safety and economics of operation. This compromise should...

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• Reliable Surrogate Modeling of Antenna Input Characteristics by Means of Domain Confinement and Principal Components

  Publication

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - Electronics - Year 2020

  A reliable design of contemporary antenna structures necessarily involves full-wave electromagnetic (EM) analysis which is the only tool capable of accounting, for example, for element coupling or the effects of connectors. As EM simulations tend to be CPU-intensive, surrogate modeling allows for relieving the computational overhead of design tasks that require numerous analyses, for example, parametric optimization or uncertainty...

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• Reliable EM-driven size reduction of antenna structures by means of adaptive penalty factors

  Publication

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION - Year 2022

  Miniaturization has become of paramount importance in the design of modern antenna systems. In particular, compact size is essential for emerging application areas such as internet of things, wearable and implantable devices, 5G technology, or medical imaging. On the other hand, reduction of physical dimensions generally has a detrimental effect on antenna performance. From the perspective of numerical optimization, miniaturization...

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• Wide-band modulation and adaptive equalization techniques for fast and reliable underwater data transmission.

  Publication

  • I. Kochańska
  • H. Lasota
  • R. Salamon

  - Year 2005

  Szybkość transmisji w płytkim kanale podwodnym jest ograniczona ze względu na wielokrotne odbicia fal dźwiękowych oraz niestacjonarność kanału. Dla zapewnienia szybkiej i niezawodnej transmisji danych w systemach komunikacji stosowane są złożone techniki modulacji oraz equalizacji kanału. W artykule zaproponowano zastosowanie modulacji OFDM oraz equalizacji adaptacyjnej w systemie komunikacji podwodnej. Modulacja OFDM stosowana...

• Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies

  Journals

  eISSN: 2474-9567

• Modal analysis of a steel grandstand

  Publication

  • N. Lasowicz
  • R. Jankowski

  - Technology and Art - Year 2012

  Among the issues related to the idea of sustainable society is the safety of civil engineering structures devoted to satisfy different needs of people. One of the types of structures devoted to satisfy recreational needs are grandstands, which are used during sport events or music concerts. It is obligatory to consider interaction between structure and crowd load especially when the crowd movement involves rhythmic jumping, dancing,...

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• Joints Of Steel Sandwich Structures

  Publication

  • J. Kozak

  - Polish Maritime Research - Year 2021

  Steel sandwich structures are perceived as alternatives to single-skin welded structures in the shipbuilding industry due its advantages like significant reduction of mass in relation to typical single skin structure. However, beside problems with their strength properties itself, applications in real structures requires of solving the problem of joining, both for connection sandwich to sandwich as well as sandwiches to single-shell...

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• Proposal of Steel weldability quantification.

  Publication

  • T. Kozak

  - Year 2005

  Przedstawiono analizę używanych definicji spawalności i zaproponowano jej zmodyfikowanie. Opracowano metodykę określania wartości względnej spawalności stali stodowanych na konstrukcje spawane. Za podstawę przyjęto uniwersalną skalę jakościową. Dla określenia spawalności uwzględniono szacowanie skłonności do pękania gorącego, zimnego, lamelarnego oraz relaksacyjnego. Ponadto, wzięto pod uwagę wskaźniki eksploatacyjne złącza, takie...

• Endoplasmic Reticulum Stress in Diseases

  Journals

  ISSN: 2300-4266

• Using Wearable Electronics to Estimate Usefulness of Heart Rate Variability for Bathing Person Identif Cation

  Publication

  • T. Kocejko
  • A. Poliński
  • A. Bujnowski
  • J. Wtorek

  - Year 2018

  In this paper the possibility of person identification based on biosignal is investigated. The work focus on the analysis of the changes in intervals between successive R-waves of electrocardiogram (ECG) recorded by wearable electronics in form of a necklaces. The main idea behind this project is to find efficient tool which may prevent sudden consciousness loss episodes or even sudden death episodes related to rapid temperature...

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• Simulation of Direct-Sequence Spread Spectrum Data Transmission System for Reliable Underwater Acoustic Communications

  Publication

  • I. Kochańska
  • J. Schmidt

  - Vibrations in Physical Systems - Year 2019

  Underwater acoustic communication (UAC) system designers tend to transmit as much information as possible, per unit of time, at as low as possible error rate. It is a particularly difficult task in a shallow underwater channel in which the signal suffers from strong time dispersion due to multipath propagation and refraction phenomena. The direct-sequence spread spectrum technique (DSSS) applied successfully in the latest standards...

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• Reliable Multi-Stage Optimization of Antennas for Multiple Performance Figures in Highly-Dimensional Parameter Spaces

  Publication

  • A. Bekasiewicz
  • S. Kozieł

  - IEEE Antennas and Wireless Propagation Letters - Year 2019

  Design of modern antenna structures needs to account for multiple performance figures and geometrical constraints. Fulfillment of these calls for the development of complex topologies described by a large number of parameters. EM-driven tuning of such designs is mandatory yet immensely challenging. In this letter, a new framework for multi-stage design optimization of multi-dimensional antennas with respect to several performance...

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• Fast and reliable knowledge-based design closure of antennas by means of iterative prediction-correction scheme

  Publication

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - ENGINEERING COMPUTATIONS - Year 2021

  A novel framework for expedited antenna optimization with an iterative prediction-correction scheme is proposed. The methodology is comprehensively validated using three real-world antenna structures: narrow-band, dual-band and wideband, optimized under various design scenarios. The keystone of the proposed approach is to reuse designs pre-optimized for various sets of performance specifications and to encode them into metamodels...

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• Machine-Learning-Powered EM-Based Framework for Efficient and Reliable Design of Low Scattering Metasurfaces

  Publication

  • S. Kozieł
  • M. Abdullah

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Year 2021

  Popularity of metasurfaces has been continuously growing due to their attractive properties including the ability to effectively manipulate electromagnetic (EM) waves. Metasurfaces comprise optimized geometries of unit cells arranged as a periodic lattice to obtain a desired EM response. One of their emerging application areas is the stealth technology, in particular, realization of radar cross section (RCS) reduction. Despite...

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