Wyniki wyszukiwania dla: AIRFOIL SHAPE DESIGN - MOST Wiedzy

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Wyniki wyszukiwania dla: AIRFOIL SHAPE DESIGN

Wyniki wyszukiwania dla: AIRFOIL SHAPE DESIGN

  • Influence of grain shape on the mechanical behaviour of granular materials

    Publikacja

    - Rok 2009

    We performed series of numerical vertical compression tests on assemblies of 2D granular material using a Discrete Element code and studied the results in regard to the grain shape. The samples consist of 5000 grains made either of 3 overlapping discs (clump - grain with concavities) or of six-edged polygons (convex grain). These two types of grains have a similar external envelope, ruled with a geometrical parameter α. In the...

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  • Application of Shape Memory Alloys in Pipeline Couplings for Shipbuilding

    Publikacja

    The aim of the study is to analyse shape memory alloy (SMA) pipeline joints in limited space applications for all kinds of ships. Generally, the space available in various areas on ships is strictly limited and service works usually meet many obstacles. If we consider a pipeline, the flange joints always require a larger free space around the pipe than the pipe alone. A simultaneous problem can occur with the propeller shaft line...

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  • Arsalan Muhammad Soomar Doctoral Student

    Osoby

    Hi, I'm Arsalan Muhammad Soomar, an Electrical Engineer. I received my Master's and Bachelor's Degree in the field of Electrical Engineering from Mehran University of Engineering and Technology, Jamshoro, Sindh, Pakistan.  Currently enrolled as a Doctoral student at the Gdansk University of Technology, Gdansk, Poland. Also worked in Yellowlite. INC, Ohio  as a Solar Design Engineer.   HEADLINE Currently Enrolled as a Doctoral...

  • Road Materials and Pavement Design

    Czasopisma

    ISSN: 1468-0629 , eISSN: 2164-7402

  • Camera angle invariant shape recognition in surveillance systems

    Publikacja

    A method for human action recognition in surveillance systems is described. Problems within this task are discussed and a solution based on 3D object models is proposed. The idea is shown and some of its limitations are talked over. Shape description methods are introduced along with their main features. Utilized parameterization algorithm is presented. Classification problem, restricted to bi-nary cases is discussed. Support vector...

  • Influences of grain shape and size distribution on permeability

    Publikacja

    - Rok 2015

    The present study investigates the effects of shape and size distributions of grains on the coefficient of permeability (k). A series of constant head permeability tests were performed to characterize the coefficient of permeability. Three particle size ranges (4.75- 0.075, 1.18- 0.075 and 0.300-0.075 mm) of two different sands (Narli Sand, Crushed Stone Sand) having different shapes were tested in a constant head permeability...

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  • Entasis- shape of beauty

    Publikacja

    Two algorithms for the construction of entasis given by [2,3] are examined in this study. It has been shown, that those shapes are not an ellipse for which they were considered by the authors, but another curves.

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  • Entasis- shape of beauty

    Two algorithms for the construction of entasis given by [2,3] are examined in this study. It has been shown, that those shapes are not an ellipse for which they were considered by the authors, but another curves.

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  • Application and modelling of Shape-Memory Alloys for structural vibration control: State-of-the-art review

    Publikacja
    • A. Tabrizikahou
    • E. Noroozinejad
    • S. Li
    • P. Gardoni
    • M. Noori
    • M. Kuczma
    • M. Łasecka-Plura

    - Construction and Building Materials - Rok 2022

    One of the most essential components of structural design for civil engineers is to build a system that is resistant to environmental conditions such as harsh chemical environments, and catastrophic disasters like earthquakes and hurricanes. Under these circumstances and disturbances, conventional building materials such as steel and concrete may demonstrate inadequate performance in the form of corrosion, deterioration, oxidizing,...

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  • Design of a microrobotic wrist for needle laparoscopic surgery

    Publikacja

    The paper addresses the design of a micro wrist for needle laparoscopic surgery (needlescopy) using MEMS technology and an original 3 degree of freedom, 3D architecture. Advancement in needlescopy drives the development of multi-dof micro-tools 1-2mmin diameter with 3D mobility but standard available fabricationtechniques are for 2.5D structures. The paper discusses thedevelopment steps and design solutions for the realization...

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  • Shape and force control of cable structures with minimal actuators and actuation

    Publikacja

    - International Journal of Space Structures - Rok 2021

    Shape adjustment and stress control can be considered as one of the effective parameters in prestressed cable structures since such structures are widely constructed nowadays due to their characteristics. The assembly errors and applied loads hugely affect the cables’ nodal positions and stress due to their delicacy. The former could disturb the shape, which affects the appearance and the function of the structure. In contrast,...

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  • Variable-fidelity shape optimization of dual-rotor wind turbines

    Publikacja

    - ENGINEERING COMPUTATIONS - Rok 2018

    Purpose Dual-rotor wind turbines (DRWTs) are a novel type of wind turbines that can capture more power than their single-rotor counterparts. Because their surrounding flow fields are complex, evaluating a DRWT design requires accurate predictive simulations, which incur high computational costs. Currently, there does not exist a design optimization framework for DRWTs. Since the design optimization of DRWTs requires numerous model...

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  • Shape Memory Polyurethane Materials Containing Ferromagnetic Iron Oxide and Graphene Nanoplatelets

    Publikacja

    Intelligent materials, such as memory shape polymers, have attracted considerable attention due to wide range of possible applications. Currently, intensive research is underway, in matters of obtaining memory shape materials that can be actuated via inductive methods, for example with help of magnetic field. In this work, an attempt was made to develop a new polymer composite—polyurethane modified with graphene nanoplates and...

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  • Big Data in Regenerative Urban Design

    Why the use of Big Data in regenerative planning matters? The aim of this chapter is to study under what conditions Big Data can be integrated into regenerative design and sustainable planning? Authors seek to answer how – when related to the ecosystem and to human activities – Big Data can be used to: • both shape policies that support the development of regenerative human settlements, • support restorative design for practitioners...

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  • Application of Shape From Shading Technique for Side Scan Sonar Images

    Side scan sonar (SSS) is one of the most widely used imaging systems in the underwater environment. It is relatively cheap and easy to deploy in comparison with more powerful sensors like multibeam echosounder or synthetic aperture sonar. Although, the SSS does not provide directly the seafloor bathymetry measurements. Its outputs are usually in a form of grey level acoustic images of seafloor. However, the analysis of such images...

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  • MATERIALS & DESIGN

    Czasopisma

    ISSN: 0264-1275 , eISSN: 1873-4197

  • Piotr Lorens prof. dr hab. inż. arch.

    Piotr Lorens – prof. dr hab. inż. arch., prof. nzw. Politechniki Gdańskiej. Po ukończeniu studiów w 1994 roku podjął pracę w Zakładzie Rozwoju Miasta na Wydziale Architektury Politechniki Gdańskiej. Uzyskawszy Stypendium Fulbrighta wyjechał na staż do USA, gdzie w latach 1996-1997 ukończył Special Program for Urban and Regional Studies na Massachusetts Institute of Technology oraz International Training Program na Harvard University...

  • Shape-Based Pose Estimation of Robotic Surgical Instruments

    Publikacja

    We describe a detector of robotic instrument parts in image-guided surgery. The detector consists of a huge ensemble of scale-variant and pose-dedicated, rigid appearance templates. The templates, which are equipped with pose-related keypoints and segmentation masks, allow for explicit pose estimation and segmentation of multiple end-effectors as well as fine-grained non-maximum suppression. We train the templates by grouping examples...

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  • Theory of architectural design V. Design for all

    Kursy Online
    • A. Gębczyńska-Janowicz
    • K. Zielińska-Dąbkowska
    • M. Wysocki
    • J. M. Kowalewska
    • M. Kwasek
    • J. Kołodziejczak

    The aim of the course is to increase awareness of the needs of people with special needs and the idea of universal design. The subject is to introduce the social and legal conditions of the profession of architect, focused on the needs of all vulnerable user groups, including people with disabilities and the elderly. Knowledge of solutions related to Design for All is necessary due to the implementation of directives and standards...

  • Experimental verification and comparison of mode shape-based damage detection methods

    Publikacja

    - Rok 2009

    This paper presents experimental verification and comparison of damage detection methods based on changes in mode shapes such as: mode shape curvature (MSC), modal assurance criterion (MAC), strain energy (SE), modified Laplacian operator (MLO), generalized fractal dimension (GFD) and Wavelet Transform (WT).

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  • Minimum drag shape bodies moving in inviscid fluid - revisited

    This paper presents the classic approach to minimum drag shape body problem, moving at hypersonic speeds, leading to famous power law shapes with value of the exponent of 3/4. Two- and three-dimensional cases are considered. Furthermore, an exact pseudo solution is given and its uselessness is discussed. Two new solutions are introduced, namely an approximate solution due to form of the functional and solution by means of optimisation...

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  • Design for all

    Kursy Online
    • J. M. Kowalewska

    The aim of the course is to increase awareness of the needs of people with special needs and the idea of universal design. The subject is to introduce the social and legal conditions of the profession of architect, focused on the needs of all vulnerable user groups, including people with disabilities and the elderly. Knowledge of solutions related to Design for All is necessary due to the implementation of directives and standards...

  • Rural Design Studio

    Kursy Online
    • A. Wróblewska
    • P. Duch-Żebrowska

    This design studio aims to ensure that new development in the countryside does not detrimentally affect its setting and is appropriate in terms of design, scale, siting and character.The workshop aims to promote development which compliments rural landscape character; reconciling the requirements of a modern lifestyle with the principles underpinning traditional rural development while promoting “distinctive”, good quality, contemporary...

  • Shape Optimisation of Kaplan Turbine Blades Using Genetic Algorithms

    Publikacja

    - Rok 2017

    This monograph is a comprehensive guide to a method of blade profile optimisation for Kaplan-type turbines. This method is based on modelling the interaction between rotor and stator blades. Additionally, the shape of the draft tube is investigated. The influence of the periodic boundary condition vs. full geometry is also discussed. Evolutionary algorithms (EA) are used as an optimisation method together with artificial neural...

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  • Machine Design 2

    Kursy Online
    • J. Łubiński

    Machine Design 2, what else?

  • Analysis of the possibilities in railways shape assessing using GNSS mobile measurements

    In recent years, a dynamic development of satellite positioning techniques using both static and mobile GNSS coordinates register mode can be observed. In addition, still developing Real-time GNSS Networks, post-processing algorithms and another measurement signal analysis algorithms, make the satellite measurements increasingly used in railway industry sector. In the article the possibilities which follows from the mobile satellite...

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  • Static Shape and Stress Control of Trusses with Optimum Time, Actuators and Actuation

    Traditional shape and stress control of structures use many actuators and require enormous time to find reasonable solutions that need designers to input specific target displacement and stress. This study employs a linear technique to static shape and stress control of pin-jointed assemblies as a theoretical advancement to prior works and provides a comparative analysis against previously established works. The study evaluates...

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  • Viewpoint independent shape-based object classification for video surveillance

    Publikacja

    A method for shape based object classification is presented.Unlike object dimension based methods it does not require any system calibration techniques. A number of 3D object models are utilized as a source of training dataset for a specified camera orientation. Usage of the 3D models allows to perform the dataset creation process semiautomatically. The background subtraction method is used for the purpose of detecting moving objects...

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  • Chemical Biology & Drug Design

    Czasopisma

    ISSN: 1747-0277 , eISSN: 1747-0285

  • FINITE ELEMENTS IN ANALYSIS AND DESIGN

    Czasopisma

    ISSN: 0168-874X , eISSN: 1872-6925

  • Shape Memory Alloy-Based Fluidically Reconfigurable Metasurfaced Beam Steering Antenna

    Publikacja

    - IEEE Access - Rok 2023

    A low-cost actuator-based fluidically programmable metasurface (FPMS) antenna is proposed to solve the slow tuning speed problem of the manually fluidic based reconfigurable antennas. The FPMS-based antenna is probe-fed and comprises a 4 × 4 square ring metasurface as a superstrate. Moreover, two shape memory alloy (SMA)-based electrically-controlled actuators are employed in the design for controlling the position of the 3D-printed...

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  • Active shape models in practice

    Publikacja

    - Rok 2005

    Autorzy wykonali uniwersalny system lokalizacji obiektów zawierający implementację aktywnych modeli kształtu, a przeprowadzone z użyciem tego systemu eksperymenty wykazały powżne wady badanej metody. W pracy przedstawiono zaobserwowane w praktyce problemy związane ze stosowaniem metody aktywnych modeli kształtu (ASM).

  • Damage detection in plates based on Lamb wavefront shape reconstruction

    Publikacja

    - MEASUREMENT - Rok 2021

    Many of the current studies in the area of damage detection using elastic wave propagation are based on deploying sensor networks with a large number of piezoelectric transducers to detect small-size cracks. A major limitation of these studies is that cracks are usually larger and have different shapes in real cases. Moreover, using a large number of sensing nodes for damage detection is both costly and computationally intensive....

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  • A structure and design of a novel compact UWB MIMO antenna

    Publikacja

    In the paper, a concept and design procedure of a novel compact MIMO slot antenna is presented. In order to achieve a better filling of available space, individual antennas are constrained to a triangular shape and optimized for a reduced size. The MIMO structure is then assembled using the two of previously designed antennas in orthogonal arrangement. Surrogate-assisted numerical optimization involving variable-fidelity electromagnetic...

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  • Marek Krawczuk prof. dr hab. inż.

    Kariera naukowa 1987 mgr inż. - absolwent Wydziału Mechanicznego PG 1991 dr inz. - Instytut Maszyn Przepływowych PAN 1995 dr hab. inż. - Instytut Maszyn Przepływowych PAN 2003 prof - Instytut Maszyn Przepływowych PAN   Zatrudnienie 1987-89 Politechnika Gdańsk 1989-2007 Instytut Maszyn Przepływowych PAN w Gdańsku 2001-2003 Uniwersytet Warmińsko-Mazurski w Olsztynie 2003 - Politechnika Gdańska

  • Processing of LiDAR and Multibeam Sonar Point Cloud Data for 3D Surface and Object Shape Reconstruction

    Publikacja

    Unorganised point cloud dataset, as a transitional data model in several applications, usually contains a considerable amount of undesirable irregularities, such as strong variability of local point density, missing data, overlapping points and noise caused by scattering characteristics of the environment. For these reasons, further processing of such data, e.g. for construction of higher order geometric models of the topography...

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  • VARIANT DESIGNING IN the PRELIMINARY SMALL SHIP DESIGN PROCESS

    Ship designing is a complex process, as the ship itself is a complex, technical multi-level object which operates in the air/water boundary environment and is exposed to the action of many different external and internal factors resulting from the adopted technical solutions, type of operation, and environmental conditions. A traditional ship design process consists of a series of subsequent multistage iterations, which gradually...

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  • Key success factors for small design offices in the bidding process

    Competition in the design office market is high, therefore it is important to be aware of the conditions determining the competitive advantage, thus increasing the bidding effectiveness. For this reason, the aim of the article is to identify key success factors (KSF) increasing successful bidding of a small design office. The factors were identified and then analysed based on a literature review, expert interviews and using Group...

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  • Arterial cannula shape optimization by means of the rotational firefly algorithm

    The article presents global optimization results of arterial cannula shapes by means of the newly modified firefly algorithm. The search for the optimal arterial cannula shape is necessary in order to minimize losses and prepare the flow that leaves the circulatory support system of a ventricle (i.e. blood pump) before it reaches the heart. A modification of the standard firefly algorithm, the so-called rotational firefly algorithm,...

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  • Design thinking (DT) for the design and planning education of engineer-architects

    Engineers are facing new challenges connected with globalisation, digitisation and the increased complexity of the design process. This calls for new, more interdisciplinary and user-oriented approaches to problem- solving. In this article, the authors analyse design thinking (DT) as a method to support the education of engineers specialising in architecture and urban planning. Identified in this study are the opportunities this...

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  • Interrelated shape memory and Payne effect in polyurethane/graphene oxide nanocomposites

    Publikacja
    • D. Ponnamma
    • K. K. Sadasivuni
    • M. Strankowski
    • P. Moldenaers
    • S. Thomas
    • Y. Grohens

    - RSC Advances - Rok 2013

    We report the fabrication of graphene oxide (GO) based polyurethane (PU) nanocomposites by a simple method of mixing and their shape memory properties at different temperatures. Both the polymer and the filler were synthesized in the laboratory by simple and easy methods – PU by pre-polymer method and GO by improved graphene oxide synthesis method. High molecular level dispersion of GO platelets within the PU matrix and thus good...

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  • Modeling in Machine Design

    Kursy Online
    • K. Mazur
    • R. Gawarkiewicz
    • M. Wasilczuk
    • G. Rotta

    The course is meant to show the students how to build calculation models in machine design

  • Importance of model tests in design and operation of watercraft for example CTO

    Publikacja

    Ship Hydromechanics Division is a specialized research and development department of Ship Design and Research Centre conducting tests and research in the field of hydromechanics, connected with design and operation of ships and other floating structures, in scope of: predictions, numerical analyses, designs of - hull shape optimized with respect to the ship’s functions with the application of modern design tools, screw propellers...

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  • Thin-walled cross section shape influence on steel member resistance.

    This work describes why trending thin-walled technology is achieving popularity in steel construction sector. A purpose of this article is to present the influence of the cold-formed element cross-section shape on an axial compression and a bending moment resistance. The authors have considered four different shapes assuming constant section area and thickness. Calculations were based on three different steel grades taking into...

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  • A study of jet impingement cooling enhancement by concave and convex heat sink shape modifications

    Publikacja

    - E3S Web of Conferences - Rok 2021

    The rising demand for efficient cooling technologies is a strong driver of extensive research in this area. This trend is particularly strong in turbines and microprocessors technology. Presented study is focused on the jet impingement cooling concept, which is used in various configurations for many years. The potential of the heat sink shape modification is not yet fully explored. Available literature suggests that average Nusselt...

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  • Sem VI_ENG_Theory of landscape design

    Kursy Online
    • Z. Afzali
    • P. Duch-Żebrowska

    Theory of landscape design  SDGs in landscape design Technical detailing of landscaping solutions

  • Rural Design Studio - 2023

    Kursy Online
    • Z. Afzali
    • P. Duch-Żebrowska
    • M. Koperska-Kośmicka

    This design studio aims to ensure that new development in the countryside does not detrimentally affect its setting and is appropriate in terms of design, scale, siting and character.The workshop aims to promote development which compliments rural landscape character; reconciling the requirements of a modern lifestyle with the principles underpinning traditional rural development while promoting “distinctive”, good quality, contemporary...

  • A SEARCH OF AN INDUCER GEOMETRY THAT IS BENEFICIAL FOR LIFTING PARAMETERS OF A LIFTED OBJECT OF A SELECTED SHAPE

    Publikacja

    The literature describes acoustic levitation phenomena with the utilization of air squeeze film between the vibrating inducer and the lifted object. The objective of the study is to determine the shape of the inducer with vibration characteristics that would allow the levitation of an object of the assumed geometry. In this paper, the influence of the dimension ratio of the inducer on the frequency of the first mode of vibration...

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  • CURRENT PHARMACEUTICAL DESIGN

    Czasopisma

    ISSN: 1381-6128 , eISSN: 1873-4286

  • Robert Idem dr hab. inż. arch.