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  • Jak prawidłowo zabezpieczyć wydruk przed utratą jakości

    Publication

    - Year 2009

    W artykule omówiono różne sposoby zabezpieczenia wydruków atramentowych.

  • Druk 3D części z tworzyw sztucznych na skalę przemysłową w technologii SLS

    Publication

    Firma EOS, wiodący i światowy dostawca technologii przemysłowego wykorzystania druku 3D dla materiałów metalicznych i polimerowych, zaprezentowała na targach formnext 2017 nowy system EOS P500, przeznaczony do addytywnego wytwarzania modeli. Drukarka 3D adresowana jest dla przedsiębiorstw chcących wytwarzać na skalę przemysłową części i elementy z tworzyw sztucznych o wysokiej jakości.

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  • Druk 3D części z tworzyw sztucznych na skalę przemysłową w technologii SLS

    Firma EOS, wiodący i światowy dostawca technologii przemysłowego wykorzystania druku 3D dla materiałów metalicznych i polimerowych, zaprezentowała na targach formnext 2017 nowy system EOS P500, przeznaczony do addytywnego wytwarzania modeli. Drukarka 3D adresowana jest dla przedsiębiorstw chcących wytwarzać na skalę przemysłową części i elementy z tworzyw sztucznych o wysokiej jakości.

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  • Updating the Coupling Algorithm between HYDRUS and MODFLOW in the HYDRUS Package for MODFLOW

    Publication

    - VADOSE ZONE JOURNAL - Year 2018

    The HYDRUS-based flow package for MODFLOW (the HPM or the HYDRUS package) is an existing unsaturated zone flow package for MODFLOW. In MODFLOW with the HPM, the groundwater modeling domain is discretized into regular grids that can be combined into multiple zones based on similarities in soil hydrology, topographical characteristics, and the depth to the groundwater. Each of these zones is assigned one unsaturated soil profile...

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  • Metody analizy wytrzymałości konstrukcji wykonanych za pomocą technologii przyrostowej FDM i ich zastosowanie do warunków pracy przekładek okien podwodnych

    Publication

    - Year 2022

    Drukowanie 3D to technologia wytwarzania fizycznego obiektu poprzez nanoszenie kolejnych warstw materiału. W pracy zaprezentowano szereg badań eksperymentalnych i numerycznych, mających na celu zbadanie wpływu ułożenia włókien wydruku na jego własności mechaniczne. Analiza otrzymanych wyników prowadzi do wniosku, że wytrzymałość wydruku uzależniona jest od wielu parametrów druku, takich jak wysokość warstwy, kąt ułożenia włókien,...

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  • Dlaczego w miarę upływu czasu wydruki cyfrowe tracą jakość. Część II

    Publication

    - Year 2009

    W artykule omówiono podstawy teoretyczne zabezpieczenia wydruków atramentowych przed szkodliwym wpływem promieniowania UV i czynników atmosferycznych.

  • Dlaczego w miarę upływu czasu wydruki cyfrowe tracą jakość. Część I

    Publication

    - Year 2009

    W artykule omówiono podstawy teoretyczne zabezpieczenia wydruków atramentowych przed szkodliwym wpływem promieniowania UV i czynników atmosferycznych.

  • Dlaczego w miarę upływu czasu wydruki cyfrowe traca jakość. Część III

    Publication

    - Year 2009

    W artykule omówiono podstawy teoretyczne zabezpieczenia wydruków atramentowych przed szkodliwym wpływem promieniowania UV i czynników atmosferycznych.

  • Mathematical approach to design 3D scaffolds for the 3D printable bone implant

    Publication

    This work demonstrates that an artificial scaffold structure can be designed to exhibit mechanical properties close to the ones of real bone tissue, thus highly reducing the stress-shielding phenomenon. In this study the scan of lumbar vertebra fragment was reproduced to create a numerical 3D model (this model was called the reference bone sample). New nine 3D scaffold samples were designed and their numerical models were created....

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  • Zastosowanie elementów "węzłowych" do budowy modelu 3D cewki giętkiej w programie polowym OPERA 3D = Application of "nodal" elements for creation of a 3D model of a flexible coil in the program Opera 3D

    Publication

    Niniejsza praca jest kontynuacją serii artykułów dotyczących modelowania 3D uzwojenia maszyn elektrycznych z cewkami giętkimi. Istotnym problemem dotyczącym modelowania takiego uzwojenia jest zmienność kształtu przekroju poprzecznego zwłaszcza w części czołowej. Powoduje to problemy w utworzeniu uzwojenia bez konfliktów wymiarowych (nie przenikanie się wierzchołków, przyleganie boków cewek, odpowiednie położenie). Niektóre programy...

  • Problems of 3d breast imaging

    Publication

    - Year 2008

    W poniższym artykule zaprezentowana zostanie idea stereoskopowego systemu pomiaru trójwymiarowej geometrii badanego obiektu. Taki sposób przetwarzania pomiarów umożliwi symulacje rozkłady temperatur na powierzchni ciała. Omówione zostaną problemy związane z konstrukcją takiego urządzenia.

  • Teleportation of geometric structures in 3D

    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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  • 3D Printing of Metallic Implants

    The fabrication of various elements, solid and open porous structures of stainless steel and Ti alloy is described. The process was started with the design of 3D models in CAD/CAM system. The 3D models were transformed into *.stl files and then the manufacturing process of the real structures by means of the selective laser melting with the SLM Realizer 100 3D printer was made. The paper shows the porous specimens made for possible...

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  • Implementation of Solute Transport in the Vadose Zone into the “HYDRUS Package for MODFLOW”

    Publication

    - GROUND WATER - Year 2018

    The “HYDRUS package for MODFLOW” is an existing MODFLOW package that allows MODFLOW to simultaneously evaluate transient water flow in both unsaturated and saturated zones. The package is based on incorporating parts of the HYDRUS‐1D model (to simulate unsaturated water flow in the vadose zone) into MODFLOW (to simulate saturated groundwater flow). The coupled model is effective in addressing spatially variable saturated‐unsaturated...

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  • HMSE: A tool for coupling MODFLOW and HYDRUS-1D computer programs

    Publication

    - SoftwareX - Year 2024

    A new software HMSE has been developed to facilitate external coupling between two well-known programs for subsurface flow modeling: MODFLOW-2005 (saturated zone flow) and HYDRUS-1D (unsaturated zone flow). Two coupling schemes have been implemented. In the first case the groundwater recharge flux is calculated by HYDRUS-1D assuming a fixed water table position and then passed to MODFLOW input files. In the second case the water...

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  • Wizualizacja zagadnień przestrzennych w Adobe Acrobat 3D = Visualization of Spatial Issues in Adobe Acrobat 3D

    Publication

    The article presents the use of 3D PDF for visualization of selected spatial issues, which can be used in teaching materials, as well as during lectures of descriptive geometry.

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  • Between Descriptive Geometry and CAD 3D

    Descriptive geometry provides methods to analyse three-dimensional space through two-dimensional drawings and prepares to create technical documentation. Geometric form of an engineering project is presented by the means of projection methods based on a 3D model, which is present in designer’s imagination. The forthcoming era of Building Information Modelling (BIM) brings changes in the way the engineer works, as the vision is...

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  • WebGL - Sieć w końcu 3D

    Publication

    - Year 2010

    WebGL jest specyfikacją tworzoną w ramach pracy nad standardem HTML 5. Praca ta ma za zadanie przybliżyć czytelnikowi możliwości tej technologii i zachęcić do wykorzystania jej na swoich stronach. Zawiera porady dotyczące rozpoczynania pracy z WebGL oraz przegląd technik możliwych do zaimplementowania przy jego użyciu.

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  • Immersive 3D visualization laboratory concept

    Artykuł opisuje koncepcję realizowanego na Politechnice Gdańskiej urządzenia do marszu przez świat wirtualny. Będzie ono miało postać przezroczystej sfery obrotowej, którą użytkownik umieszczony w środku będzie obracał własnymi krokami (na wzór chomika biegnącego w kołowrotku). Sfera będzie umieszczona wewnątrz sześcianu zbudowanego z ekranów, na których będzie wyświetlany obraz stereoskopowy przedstawiający świat wirtualny z punktu...

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  • Komputerowy model 3D stawu biodrowego

    Publication

    - Year 2013

    W pracy przedstawiono stworzony w programie ANSYS komputerowy model 3D stawu biodrowego. Model wykonano w oparciu o budowę anatomiczną oraz zebrane dane dotyczące stałych materiałowych kości i elementów chrzęstnych. Analiza i porównanie modelu biochemicznego, lepkosprężystego, mieszanego oraz molekularno – agregacyjnego służy ułatwieniu stworzenia modelu najbliższego rzeczywistości, który można by wykorzystać w projektowaniu endoprotez...

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  • Applications of Immersive 3D Visualization Lab

    Publication

    The paper presents Immersive 3D Visualization Lab (at the Faculty of Electronics, Telecommunications and Informatics at Gdańsk University of Technology in Poland) and its applications prepared after its launch in December 2014. The main device of the lab is a virtual reality cubic cave with six screen-walls, where a person can navigate in virtual space using different controllers. The most sophisticated controller is a freely rotating...

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  • Zautomatyzowana budowa modeli 3D pomieszczeń

    W artykule przedstawiono budowę systemu do automatycznej budowy modeli 3D wnętrz budynków. System taki może być stosowany do tworzenia lokacji w grach komputerowych. Model jest tworzony na bazie kolorowych oraz głębokościowych obrazów pobranych z kamery Microsoft Kinect. Opisano architekturę komponentową systemu, zastosowane sterowniki do komunikacji. Podano zastosowany algorytm sekwencyjny i równoległy, środowisko testowe oraz...

  • Launch of the Immersive 3D Visualization Laboratory

    The paper presents the concept of Immersive 3D Visualization Laboratory, formed at the Faculty of Electronics, Telecommunications and Informatics at Gdańsk University of Technology under the project Gdańsk University of Technology's Modern auditoriums. The basic unit of this laboratory will be cubic CAVE (Cave Automatic Virtual Environment) enriched with spherical walk simulator. This device will allow the user unlimited walking,...

  • Sterowanie temperaturą w drukarce 3D

    Artykuł dotyczy zagadnień związanych z drukarką 3D. Opracowano dwa rodzaje modeli matematycznych, które zweryfikowano w oparciu o dane pomiarowe. Następnie zaprojektowano i symulacyjnie przetestowano dwa algorytmy sterowania temperaturą w drukarce 3D.

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  • 3D Macromodels in the FDTD filter analysis.

    Publication

    - Year 2004

    W artykule pokazane jest zastosowanie makromodeli 3D do analizy filtrow metoda FDTD. Makromodele tworzone są w oparciu o opis objętości metodą FDFD, a następnie redukcję równań stanu metodą ENOR. Metoda pozwala na uzyskanie dużych dokładności przy czasie obliczeń zbliżonym do siatki podstawowej.

  • EVALUATION OF 3D MODEL OF REBAR FOR QUANTITATIVE PARAMETERS

    Publication
    • A. H. Qureshi
    • W. S. Alaloul
    • A. Murtiyoso
    • S. J. Hussain
    • S. Saad
    • V. K. Oad

    - Year 2022

    The construction industry practices and processes are evolving constantly, and with the emergence of Industry 4.0, the use of technologies is expanding. Construction progress monitoring is an essential project lifecycle process; project success and timely completion are linked with effective progress monitoring operations and adopted tools. In the domain of automated construction progress monitoring, 3D modeling techniques have...

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  • Chitosan-based inks for 3D printing and bioprinting

    Publication
    • M. Taghizadeh
    • A. Taghizadeh
    • M. K. Yazdi
    • P. Zarrintaj
    • F. J. Stadler
    • J. D. Ramsey
    • S. Habibzadeh
    • G. Naderi
    • M. Saeb
    • M. Mozafari
    • U. Schubert

    - GREEN CHEMISTRY - Year 2022

    The advent of 3D-printing/additive manufacturing in biomedical engineering field has introduced great potential for the preparation of 3D structures that can mimic native tissues. This technology has accelerated the progress in numerous areas of regenerative medicine, especially led to a big wave of biomimetic functional scaffold developments for tissue engineering demands. In recent years, the introduction of smart bio-inks has...

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  • On a 3D material modelling of smart nanocomposite structures

    Publication

    - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Year 2023

    Smart composites (SCs) are utilized in electro-mechanical systems such as actuators and energy harvesters. Typically, thin-walled components such as beams, plates, and shells are employed as structural elements to achieve the mechanical behavior desired in these composites. SCs exhibit various advanced properties, ranging from lower order phenomena like piezoelectricity and piezomagneticity, to higher order effects including flexoelectricity...

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  • 3D Scanning of Semitransparent Amber with and without Inclusions

    Publication

    - Year 2021

    This paper is concerned with making 3D scans of semitransparent ambers with and without inclusions. The paper presents results of using a variety of devices applied for this purpose. Equipment used in the experiments includes a 3D laser scanner, a structured light scanner, a stereo camera, a camera array and a tomograph. The main object used in the experiment was an amber with a fossil of a lizard. The paper shows possibilities...

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  • Biomechanical properties of 3D-printed bone models

    Publication

    Bone lesions resulting from large traumas or cancer resections can be successfully treated by directly using synthetic materials or in combination with tissue engineering methods (hybrid). Synthetic or hybrid materials combined with bone tissue’s natural ability for regeneration and biological adaptation to the directions of loading, allow for full recovery of its biological functions. Increasing interest in new production methods...

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  • The development of the 3D printing technology in the Radom region

    Publication

    - Mechanik - Year 2017

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  • Emission of Particles and VOCs at 3D Printing in Automotive

    Publication
    • K. Tomasz
    • K. Remigiusz
    • B. Andrzej
    • G. Sebastian
    • K. Kazimierz

    - Year 2019

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  • Reconstruction of 3D image of corona discharge streamer

    Publication
    • M. Kocik
    • M. Tański
    • J. Mizeraczyk
    • R. Ichiki
    • S. Kanazawa
    • J. Dembski

    - Year 2010

    In this paper, the method of reconstruction of the 3D structure of streamers in DC positive corona discharge in nozzle-to-plate electrode configuration is presented. For reconstructing of 3D image of corona discharge streamer we propose a stereographical method, where streamers are observed from several directions simultaneously. The multi-directional observation enabled to obtain fine positional coordinates of streamers for a...

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  • Lokalizacja (3D) obiektów w środowisku wewnątrzbudynkowym

    W chwili obecnej nie ma działających systemów lokalizacyjnych, pozwalających na jednoznaczne przestrzenne określenie położenia obiektu/osoby w środowi-sku wewnątrzbudynkowym. Głównym problemem w takich aplikacjach, jest wyznaczenie m.in. poprawnej wysokości lokalizowanego obiektu. Jednym z parametrów, który zapewniałby wzrost dokładności lokalizowania w pionie (wyznaczanie wysokości) jest zastosowanie czujnika ciśnienia atmosferycznego....

  • 3D buckling analysis of a truss with horizontal braces

    Publication

    - Year 2012

    The present research is devoted to the study of out-of-plane buckling of a truss with horizontal braces. The truss is a model of real roof truss scaled by factor ¼. A linear buckling and a non-linear analysis with geometric and material nonlinearity were carried out. The truss buckling and limit load for different stiffnesses and number of braces are found. Numerical analysis are verified by experiment. Threshold bracing stiffness...

  • Thermal-Humidity Parameters of 3D Printed Wall

    Publication
    • M. Kaszynka
    • N. Olczyk
    • M. Techman
    • S. Skibicki
    • A. Zielinski
    • K. Filipowicz
    • T. Wroblewski
    • M. Hoffmann

    - IOP Conference Series: Materials Science and Engineering - Year 2019

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  • 3D Buckling Analysis of a Truss with Horizontal Braces

    The present research is devoted to the study of out–of–plane buckling of a truss with horizontal braces. The truss is a model of real roof truss scaled by factor 1=4. A linear buckling and a non–linear analysis with geometric and material non–linearity were carried out. The truss buckling and limit load for different stiffnesses and number of braces are found. Numerical analysis are verified by experiment. Threshold bracing stiffness condition...

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  • Triangular 3D Laser Scanning in Underwater Photogrammetry

    The use of triangular 3D laser scanning may significantly enhance the visual inspection of underwater objects. In these days of high demand for accurate information, exclusively photographic documentation is not enough, as it is geometrically flawed. The authors of this article are trying to present the rudiments of laser scanning, a modern means of measuring, which is reliable, relatively easy to use and works in accordance with...

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  • 3D Computer Model of the Hip Joint Cartilage

    This paper presents 3D computer model of the hip joint cartilage in the ANSYS program. Model is made on the basis of anatomy and collected data on the material constants of bone and cartilage components. Analysis and comparison of biochemical model, viscoelastic and molecular mixed - aggregation serves to facilitate the creation of the next model of reality, which could be used in the design of joint prostheses. The correctness...

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  • Virtual Sightseeing in Immersive 3D Visualization Lab

    The paper describes the modern Immersive 3D Visualization Lab (I3DVL) established at the Faculty of Electronics, Telecommunications and Informatics of the Gdańsk University of Technology (GUT) and its potential to prepare virtual tours and architectural visualizations on the example of the application allowing a virtual walk through the Coal Market in Gdańsk. The paper presents devices of this laboratory (CAVE, walk simulator etc.),...

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  • Thermoplastic elastomer filaments and their application In 3D printig

    The paper provides an overview on the materials used in the 3D printing technology (the Polish and foreign market) with a particular focus on flexible filaments and their possible application in the industry. There are described the techniques of 3D printing and modern filaments available on the market. There is observed the increase of interest in the production of products from filaments based on thermoplastic elastomers (TPE),...

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  • TIME SERIES DATA FOR 3D FLOOD MAPPING

    Publication

    - Year 2018

    Thanks to the ability to collect information about large areas and with high frequency in time areas threatened by floods can be closely monitored. The effects of flooding are socio-economic losses. In order to reduce those losses, actions related to the determination of building zones are taken. Moreover, the conditions to be met by facilities approved for implementation in such areas are determined. Therefore, satellite data...

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  • Innovative Solutions for Immersive 3D Visualization Laboratory

    Publication

    The paper presents results of the work concerning the technical specification of Immersive 3D Visualization Laboratory to be opened in late summer 2014 at the Faculty of Electronics, Telecommunications and Informatics at Gdańsk University of Technology in Poland. The person immersed in VR space will be placed in a transparent sphere with a diameter of over 10 feet, supported on rollers and equipped with a motion tracking system....

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  • Integration of thermographic data with the 3D object model

    Publication

    - Year 2014

    The aim of the paper is to present new method for merging the 3D model data of the measured object with thermograms. Our technique is based on the combination of visual 3D imaging technique and thermal imaging technique, which maps the 2D thermograms on to 3D anatomical mesh model. The combination of these imaging modalities allows the generation of combined 3D and thermal data from which thermal signatures can be verified and...

  • Image projection in Immersive 3D Visualization Laboratory

    In recent years, many centers in the world attempted to build a virtual reality laboratory. The main idea of such laboratory is to allow the user to “immerse” into and move in a computer-generated virtual world. In the paper, the underlying principles of the system of virtual reality (VR) are described. The selected implementations constructed by the research centers of the world are also presented. The cave automatic virtual environment...

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  • Application of 3D flow solver in education of students

    Publication

    - TASK Quarterly - Year 2002

    Przedstawiono zastosowanie metod numerycznej mechaniki płynów w kształceniu studentów uczelni technicznej. Omówiono zastosowanie metod CFD jako narzędzia pomocnego w zrozumieniu zagadnień termodynamiczno-przepływowych stopni turbinowych, jak i w rozwiązywaniu zadań projektowych.

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  • 3D Model Preparing Patterns for Interactive Urban Visualization - Guidelines for Graphic Designers Preparing 3D Models for Virtual Reality Applications

    Publication

    While working on architectural visualizations, the software developer often has to work with graphic designers who create models in a different environment what can cause many complications. For this reason, it is very important to have some guidelines which can protect both the developer and the designer from commixing mistakes. The paper presents a list of such guidelines based on the authors’ experience. The reader can treat...

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  • Metoda wizualizacji 3D w standardzie OpenGL obiektów bliskiego zasięgu = The 3D visualization method of close range objects in the OpenGL standard

    Prezentacja możliwości dotyczących wykorzystania autorskiej aplikacji ''3D VISUALIZATION'' w badaniach i analizach obiektów modelowanych z wykorzystaniem metod fotogrametrii bliskiego zasięgu.

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  • 3D Metamaterial Ultra-Wideband Absorber for curved surface

    Publication
    • M. Norouzi
    • S. Jarchi
    • M. Miab
    • M. Esfandiari
    • A. Lalbakhsh
    • S. Kozieł
    • S. Reisenfeld
    • G. Moloudian

    - Scientific Reports - Year 2023

    This paper proposes a three-dimensional metamaterial absorber based on a resistive film patch array to develop a low-cost, lightweight absorber for curved surfaces. An excellent absorption over a large frequency band is achieved through two different yet controllable mechanisms; In the first mechanism, a considerable attenuation in the wave power is achieved via graphite resistive films. The absorption is then intensified through...

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  • Design of modified PID controllers for 3D crane control

    Publication

    From the control viewpoint, 3D crane is a dynamic, nonlinear and multidimensional electromechanical system. In this paper, five control systems using a set-point weighted PID controllers (modified controllers) are designed. These structures and properties are presented. Optimization process of controllers settings based on integral performance indices is made. Simulation tests of control systems are presented. Comparison of integral...

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