Wyniki wyszukiwania dla: layered%20structures

• Comparison of conductivity averaging methods for one-dimensional unsaturated flow in layered soils

  Publikacja

  • A. Szymkiewicz
  • R. Helmig

  - ADVANCES IN WATER RESOURCES - Rok 2011

  W artykule przedstawiono numeryczne rozwiązania równania Richardsa, opisującego nieustalony przepływ wody w uwarstwionym gruncie nienasyconym. Przeanalizowano różne metody obliczania średniej przewodności hydraulicznej między węzłami siatki numerycznej oraz różne możliwości położenia węzłów względem granic warstw gruntu. Najlepsze wyniki otrzymano stosując metodę uśredniania stanowiącą adaptację wcześniejszej propozycji jednego...

• Crystal structure, chemical bonding, and physical properties of layered AIrSn2 (A = Sr and Ba)

  Publikacja

  • M. Marshall
  • L. Xing
  • Z. Ryżyńska
  • J. Blawat
  • T. Klimczuk
  • R. Jin
  • W. Xie

  - JOURNAL OF MATERIALS SCIENCE - Rok 2019

  We report the experimental and theoretical investigation of structure, chemical bonding interactions, and physical properties of new ternary stannides AIrSn2 (A = Sr and Ba). AIrSn2 (A = Sr and Ba) crystallizes in the orthorhombic Re3B-type structure with the space group Cmcm (No. 64). According to single-crystal X-ray diffraction results, the structure of AIrSn2 (A = Sr and Ba) can be considered as a Zintl-type compound with heterogeneous...

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• Numerical Analysis of Recharge Rates and Contaminant Travel Time in Layered Unsaturated Soils

  Publikacja

  • A. Szymkiewicz
  • J. Savard
  • B. Jaworska-Szulc

  - Water - Rok 2019

  This study focused on the estimation of groundwater recharge rates and travel time of conservative contaminants between ground surface and aquifer. Numerical simulations of transient water flow and solute transport were performed using the SWAP computer program for 10 layered soil profiles, composed of materials ranging from gravel to clay. In particular, sensitivity of the results to the thickness and position of weakly permeable...

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• Layered MoS2: effective and environment-friendly nanomaterial for photocatalytic degradation of methylene blue

  Publikacja

  • J. Kisała
  • R. Wojnarowska-Nowak
  • Y. Bobitski

  - Scientific Reports - Rok 2023

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• Few-Layered Hexagonal Boron Nitride: Functionalization, Nanocomposites, and Physicochemical and Biological Properties

  Publikacja

  • M. Jedrzejczak-Silicka
  • M. Trukawka
  • K. Piotrowska
  • E. Mijowska

  - Rok 2020

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• Models of Structures in Didactics

  Publikacja

  • S. Niewitecki

  - Procedia Engineering - Rok 2016

  The final aim of teaching students subjects, such as structural mechanics, reinforced concrete, and steel structures is to teach them how structures work in a given building as well as to provide them with skills enabling them to calculate and design structures. The behavioral model of the structure, contrary to the architectural model, which focuses mainly on the external form of the building, shows workings from both the static...

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• Hidden Tensor Structures

  Publikacja

  • M. Czachor

  - ENTROPY - Rok 2024

  Any single system whose space of states is given by a separable Hilbert space is automatically equipped with infinitely many hidden tensor-like structures. This includes all quantum mechanical systems as well as classical field theories and classical signal analysis. Accordingly, systems as simple as a single one-dimensional harmonic oscillator, an infinite potential well, or a classical finite-amplitude signal of finite duration...

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• Fatigue Performance of Double-Layered Asphalt Concrete Beams Reinforced with New Type of Geocomposites

  Publikacja

  • P. Jaskuła
  • D. Ryś
  • M. Stienss
  • C. Szydłowski
  • M. Gołos
  • J. Kawalec

  - Materials - Rok 2021

  The reinforcement of asphalt layers with geosynthetics has been used for several decades, but proper evaluation of the influence of these materials on pavement fatigue life is still a challenging task. The presented study investigates a novel approach to the reinforcement of asphalt layers using a new type of geogrid composite, in which square or hexagonal polypropylene stiff monolithic paving grid with integral junctions is bonded...

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• Kinetics of Cross-Linking Reaction of Epoxy Resin with Hydroxyapatite-Functionalized Layered Double Hydroxides

  Publikacja

  • Z. Karami
  • M. Ganjali
  • M. Zarghamidehaghani
  • M. Aghazadeh
  • M. Jouyandeh
  • A. Esmaeili
  • S. Habibzadeh
  • A. Mohaddespour
  • .. Inamuddin
  • K. Formela... i 2 innych

  - Polymers - Rok 2020

  The cure kinetics analysis of thermoset polymer composites gives useful information about their properties. In this work, two types of layered double hydroxide (LDH) consisting of Mg2+ and Zn2+ as divalent metal ions and CO32− as an anion intercalating agent were synthesized and functionalized with hydroxyapatite (HA) to make a potential thermal resistant nanocomposite. The curing potential of the synthesized nanoplatelets in the...

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• Laboratory fatigue assessment of large geocomposite-reinforced double-layered asphalt concrete beams

  Publikacja

  • P. Jaskuła
  • D. Ryś
  • M. Stienss
  • C. Szydłowski
  • M. Gołos
  • J. Kawalec

  - Rok 2022

  Geosynthetic reinforcement of asphalt layers has been used for several decades. Evaluation of the influence of these materials on pavement fatigue life is still ongoing, especially for new types of geocomposites. This paper presents the evaluation of fatigue performance of large asphalt concrete beams reinforced with a new type of composite in which square or hex­agonal polypropylene stiff monolithic paving grid with integral junctions...

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• Laboratory fatigue assessment of large geocomposite-reinforced double-layered asphalt concrete beams

  Publikacja

  • P. Jaskuła
  • D. Ryś
  • M. Stienss
  • C. Szydłowski
  • J. Kawalec
  • M. Gołos

  - Rok 2022

  Geosynthetic reinforcement of asphalt layers has been used for several decades. Evaluation of the influence of these materials on pavement fatigue life is still ongoing, especially for new types of geocomposites. This paper presents the evaluation of fatigue performance of large asphalt concrete beams reinforced with a new type of composite in which square or hexagonal polypropylene stiff monolithic paving grid with integral junctions...

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• Surface cracking of laser melted Ti-6Al-4V alloy

  Publikacja

  • A. Zieliński
  • A. Dziadoń
  • W. Serbiński
  • M. Jażdżewska

  - Advances in Materials Science - Rok 2008

  Opisano charakterystyczne cechy pękania powierzchniowego obserwowanego po nadtapianiu laserem CO2 i Nd:YAG stopu Ti-6Al-4V. Obserwowano pęknięcia niezależnie od sposobu nadtapiania, penetrujące głęboko strefę przetopioną i w niewielkim stopniu zależne od sposobu nadtapiania. Przypisano obserwowane zjawisko przemianie martenzytycznej i (lub) naprężeniom cieplnym powstającym podczas gwałtownego chłodzenia.

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• Junctions In Shell Structures: A Review

  Publikacja

  • W. Pietraszkiewicz
  • V. Konopińska-Zmysłowska

  - THIN-WALLED STRUCTURES - Rok 2015

  Many shell structures used in modern technology consist of regular shell parts joined together along their common boundaries. We review different theoretical, numerical, and experimental approaches to modelling, analyses and design of the compound shell structures with junctions. Several alternative forms of boundary, continuity and jump conditions at the singular midsurface curves modelling the shell junction are reviewed. We...

• Structures of diamond tool composites

  Publikacja

  • A. Bakoń
  • A. Barylski

  - Mechanik - Rok 2017

  Presented are structures and examples of applications of diamond tool composites. They are widely used as cutting tools, bonded abrasive tools and dressing tools.

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• Teleportation of geometric structures in 3D

  Publikacja

  • D. Aerts
  • M. Czachor
  • Ł. Orłowski

  - Journal of Physics A-Mathematical and Theoretical - Rok 2009

  The simplest quantum teleportation algorithms can be represented in geometric terms in spaces of dimensions 3 (for real state vectors) and 4 (for complex state vectors). The geometric representation is based on geometric-algebra coding, a geometric alternative to the tensor-product coding typical of quantum mechanics. We discuss all the elementary ingredients of the geometric version of the algorithm: geometric analogs of states...

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• Extending GQM by Argument Structures

  Publikacja

  • Ł. Cyra
  • J. Górski

  - Rok 2008

  Effective methods for metrics definition are of particular importance, as measurement mechanisms are indispensable in virtually any engineering discipline. The paper describes how the well known Goal-Question-Metric (GQM) method of systematic metrics derivation from measurement goals can be extended by applying argument structures. The proposed approach is called Goal-Argument-Metric (GAM). The general ideas of GQM and GAM are...

• Smart acoustic band structures

  Publikacja

  • W. Waszkowiak
  • A. Żak
  • M. Palacz
  • M. Krawczuk

  - Rok 2020

  Smart acoustic band structures exhibit very interesting and non-standard physical properties due to the periodic nature of their certain characteristic on different scale levels. They manifest mostly in their frequency spectra as socalled frequency band-gaps or stop-bands, what has a great impact on the behaviour of these structures in relation to the propagation of vibro-acoustic signals that can be transmitted through the structures...

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• Numerical Modelling of Structures with Uncertainties

  Publikacja

  • M. Kahsin

  - Polish Maritime Research - Rok 2017

  The nature of environmental interactions, as well as large dimensions and complex structure of marine offshore objects, make designing, building and operation of these objects a great challenge. This is the reason why a vast majority of investment cases of this type include structural analysis, performed using scaled laboratory models and complemented by extended computer simulations. The present paper focuses on FEM modelling...

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• Global defensive secure structures

  Publikacja

  • M. Małafiejski
  • K. Wereszko

  - Rok 2022

  Let S ⊂ V (G) for a given simple non-empty graph G. We define for any nonempty subset X of S the predicate SECG,S(X) = true iff |NG[X]∩S| ≥ |NG[X]\S|. Let H be a non-empty family of graphs such that for each vertex v ∈ V (G) there is a subgraph H of G containing v and isomorphic to a member of H. We introduce the concept of H-alliance extending the concept of global defensive secure structures. By an H-alliance in a graph G we...

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• On a flexomagnetic behavior of composite structures

  Publikacja

  • M. Malikan
  • V. Eremeev

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2022

  The popularity of the studies is getting further on the flexomagnetic (FM) response of nano-electro-magneto machines. In spite of this, there are a few incompatibilities with the available FM model. This study indicates that the accessible FM model is inappropriate when considering the converse magnetization effect that demonstrates the necessity and importance of deriving a new FM relation. Additionally, the literature has neglected...

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• On constructional solutions for tensile structures

  Publikacja

  • A. Ambroziak
  • P. Kłosowski

  - Rok 2006

  W pracy zebrano i opisano kilka wybranych rozwiazań konstrukcyjnych stosowanych powszechnie w membranowych konstrukcjach wiszących.

• Extending GQM by argument structures

  Publikacja

  • Ł. Cyra
  • J. Górski

  - Rok 2007

  Effective metrics definition methods are of particular importance, as measurement mechanisms are indispensable in virtually any engineering discipline. The paper describes how the well known Goal-Question-Metric (GQM) method of systematic metrics derivation from measurement goals can be extended by applying argument structures. The proposed approach is called Goal-Argument-Metric (GAM). We briefly introduce general ideas of GQM...

• Modelling of foundations for supporting structures.

  Publikacja

  • A. Bolt

  - Studia Geotechnica et Mechanica - Rok 2003

  W pracy przedstawiono problemy współpracy fundamentów konstrukcji wsporczych z otaczającym ośrodkiem gruntowym w warunkach przestrzennego stanu odkształcenia. Przedstawiono możliwości analizy odporu granicznego podłoża i przemieszczeń fundamentów sztywnych obciążonych siłą poziomą lub momentem. Porównano modelowanie fizyczne zjawisk z modelowaniem matematycznym z wykorzystaniem symulacji numerycznych opartych na analizie płaskiego...

• On mechanics of piezocomposite shell structures

  Publikacja

  • M. Malikan

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2024

  This study presents an original and novel investigation into the mechanics of piezo-flexo-magneto-elastic nanocomposite doubly-curved shells (PFMDCSs) and the ability to detect the lower and higher levels of electro-magnetic fields. In this context, by utilizing the first-order shear deformation shell model, stresses and strains are acquired. By imposing Hamilton's principle and the von Kármán approach, the governing equations...

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• On aspects of tensile structures analysis.

  Publikacja

  • A. Ambroziak
  • P. Kłosowski

  - Rok 2004

  W pracy dokonano omówienia podstawowych aspektów analizy konstrukcji napiętych. Przedstawiono krótki rys historyczny tego typu konstrukcji, zwracając uwagę m.in. na konstrukcje membranowe, cięgnowe, pneumatyczne.

• Silanethiolates - synthesis, properties and structures.

  Publikacja

  • B. Becker

  - Rok 2004

  W pracy wskazano podstawowe drogi syntezy oraz podano zwięzłą charakterystykę silanotiolanów - w większości związków kompleksowych posiadających jako główny ligand grupę silanotiolanową, na ogół (t-BuO)3SiS. Przy pomocy odpowiednio dobranych przykładów zilustrowano właściwości tych związków - wskazano ciekawsze elementy struktury molekularnej oraz specyficzne cechy spektralne.

• Joints Of Steel Sandwich Structures

  Publikacja

  • J. Kozak

  - Polish Maritime Research - Rok 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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• On analysis of nanocomposite conical structures

  Publikacja

  • S. Dastjerdi
  • Ö. Civalek
  • M. Malikan
  • B. Akgöz

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2023

  This research examines the analysis of rotating truncated conical baskets reinforced by carbon nanotubes around the two independent axes. A time-dependent analysis is considered, and the nonlinear dynamic governing equations are extracted using the energy method. Carbon nanotubes (CNTs) reinforced the conical basket, and the structure's mechanical properties are determined based on the several distributions of carbon nanotubes....

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• Physical and mechanical properties of rigid polyurethane faoms modified with selected flame retardants or layered silicates

  Publikacja

  • Ł. Piszczyk
  • M. Danowska
  • M. Strankowski
  • I. Gibas
  • J. Haponiuk

  - ADVANCED COMPOSITES LETTERS - Rok 2011

  W pracy przedstawiono charakterystykę pianek poliuretanowych zawierających klasyczne środki uniepalniające oraz nanonapełniacze z grupy glinokrzemianów warstwowych. Zbadano wpływ zarówno nanonapełniaczy na bazie naturalnego montmorylonitu, jak i modyfikowanych glinokrzemianów. Uzyskane spienione poliuretanowe o zmniejszonej palności charakteryzowano z wykorzystaniem różnych technik badawczych, między innymi wykonano badania DMA,...

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• Impact response of two-layered grouted aggregate fibrous concretecomposite under falling mass impact

  Publikacja

  • M. K. Haridharan
  • S. Matheswarana
  • G. Murali
  • S. R. Abid
  • R. Fediuk
  • Y. Mugahed Amran
  • H. Abdelgader

  - CONSTRUCTION AND BUILDING MATERIALS - Rok 2020

  Two-layered Grouted Aggregates Fibrous Concrete Composite (TGAFCC) is a new category concrete which became popular recently and attracted the attention of researchers globally. Recent studies indicated that TGAFCC has notable improvement in mechanical properties, which has been sufficiently documented. However, the impact behaviour of TGAFCC when combined with Glass Fibre Mesh (GFM) and Textile Fibre Mesh (TFM) is still unexplored....

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• Optical sensor of a person sitting on a chair and dressed in multi-layered clothes vital signs monitoring

  Publikacja

  • A. Bujnowski
  • M. Kaczmarek
  • K. Osiński
  • M. Gramowski
  • J. Wtorek

  - Rok 2020

  An optoelectronic device enhancing a smart chair functionality is presented in the paper. Its essential purpose is a detection of a sitting person presence on the chair by means of detecting the vital signs. Additionally, it could be used for determining of clothes layer parameters useful in adjusting a system of a capacitive electrocardiography.

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• Impact response of novel layered two stage fibrous composite slabs with different support type

  Publikacja

  • R. Rithanyaa
  • G. Murali
  • M. Salaimanimagudam
  • R. Fediuk
  • H. Abdelgader
  • A. Siva

  - Structures - Rok 2021

  The performance of novel Layered Two Stage Fibrous Composite slabs (LTSFC) was pioneered under falling mass collisions using a combined experimental and numerical study. Such LTSFC slabs consist of three layers with and without the insertion of glass fibre mesh between the layers. LTSFC techniques were used to fabricate the composite slabs with three layers including 3%, 1.5%, and 3% of fibre content for the top, middle, and...

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• Impact performance of novel multi-layered prepacked aggregate fibrous composites under compression and bending

  Publikacja

  • G. Murali
  • S. R. Abid
  • Y. M. Amran
  • H. Abdelgader
  • R. Fediuk
  • A. Susrutha
  • K. Poonguzhali

  - Structures - Rok 2020

  Multi-layered Prepacked aggregate fibrous composite (MLPAFC) is a new type of concrete, which is prepared in two subsequent stages of aggregate-fibre skeleton prepacking and cementitious grouting. In this study, ten MLPAFC mixtures were prepared in three subsequent layers incorporating different contents of four different types of steel fibres. Long and short hooked-end and crimped steel fibers were adopted with 3.0 and 1.5% dosages...

• One-pot self-assembly of three-dimensional graphene macroassemblies with porous core and layered shell

  Publikacja

  • W. Lv
  • Y. Tao
  • W. Ni
  • Z. Zhou
  • F. Su
  • X. Chen
  • F. Jin
  • Q. Yang
  • X. Chen

  - JOURNAL OF MATERIALS CHEMISTRY - Rok 2011

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• Electrochemical Characteristics of Discrete, Uniform, and Monodispersed Hollow Mesoporous Carbon Spheres in Double‐Layered Supercapacitors

  Publikacja

  • X. Chen
  • K. Kierzek
  • K. Wenelska
  • K. Cendrowski
  • J. Gong
  • X. Wen
  • T. Tang
  • P. Chu
  • E. Mijowska

  - Chemistry-An Asian Journal - Rok 2013

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• COMPUTER LANGUAGES SYSTEMS & STRUCTURES

  Czasopisma

  ISSN: 1477-8424 , eISSN: 1873-6866

• Journal of Materials and Engineering Structures

  Czasopisma

  ISSN: 2170-127X

• International Journal of Protective Structures

  Czasopisma

  ISSN: 2041-4196 , eISSN: 2041-420X

• Nano-Structures and Nano-Objects

  Czasopisma

  eISSN: 2352-507X

• Progress in Steel Building Structures

  Czasopisma

  ISSN: 1671-9379

• Mechanics of Advanced Composite Structures

  Czasopisma

  ISSN: 2423-4826

• MATHEMATICAL STRUCTURES IN COMPUTER SCIENCE

  Czasopisma

  ISSN: 0960-1295 , eISSN: 1469-8072

• International Journal of Steel Structures

  Czasopisma

  ISSN: 1598-2351 , eISSN: 2093-6311

• Journal of Homotopy and Related Structures

  Czasopisma

  ISSN: 2193-8407 , eISSN: 1512-2891

• Research on Engineering Structures and Materials

  Czasopisma

  ISSN: 2148-9807 , eISSN: 2149-4088

• JOURNAL OF SANDWICH STRUCTURES & MATERIALS

  Czasopisma

  ISSN: 1099-6362 , eISSN: 1530-7972

• Viscoplastic damage analysis of structures subjected to impact loading. Plate and shell structures. - Ł. Pyrzowski.

  Publikacja

  • Ł. Pyrzowski

  - Rok 2011

  The work presents the investigation in the response of plate-shell structures subjected to impact loading (gas mixture explosions). This phenomenon is studied in the context of its mechanical aspects, mainly the ductile fracture prediction. The work starts with the literature review and the description of theories, which are nowadays the most popular in the damage and failure modelling. After selecting the theoretical models and...

• MATERIALS AND STRUCTURES

  Czasopisma

  ISSN: 1359-5997 , eISSN: 1871-6873

• Niskotemperaturowe przetapianie laserem biostopów tytanu.

  Publikacja

  • A. Zieliński
  • W. Serbiński

  - Rok 2004

  Prezentowane są założenia nowego projektu badawczego, polegającego na nadtapianiu biostopów tytanu laserem dużej mocy w temperaturze ciekłego azotu.

• Generalized Taylor formula and shell structures for the analysis of the interaction between geosythetics and engineering structures of transportation lines

  Publikacja

  • E. Mieloszyk
  • S. Grulkowski

  - Rok 2018

  The analysis of the interaction between geosynthetics and engineering structures (e.g. railroad bed, soil foundation, pipeline) assumes that the geosynthetic form elastic membranes or shell laid on different types of foundations. The mathematical description of that problems in continuous domain employs Laplace operator Δ or d’Alembert operator □. In this paper we demonstrate the analysis based on generalize Taylor formula, and...