Search results for: ROTOR EXPERIMENTAL TESTING

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

  Publication

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

  - Year 2006

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

• Experimental and theoretical study of dryout in annular flow in small diameter channels

  Publication

  • D. Mikielewicz
  • M. Gliński
  • J. Wajs

  - Archives of Thermodynamics - Year 2011

  W pracy zaprezentowano badania eksperymentalne kryzysu wrzenia II rodzaju w kanałach o małej średnicy. Badania prowadzone były w rurach pionowych o średnicy 1.15 i 2.3 mm, w których badanym czynnikiem były płyny niskowrzące, takie jak SES36 i R123. W badaniach zastosowano nowoczesne techniki pomiarowe do określania lokalizacji kryzysu wrzenia na ściance kanału, np. kamerę termowizyjną. Na podstawie pozyskanych punktów eksperymentalnych...

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• Pressure effects on the superconductivity of the HfPd2Al Heusler compound: Experimental and theoretical study

  Publication

  • B. Wiendlocha
  • M. Winiarski
  • M. Muras
  • C. Zvoriste-Walters
  • J. C. Griveau
  • S. Heathman
  • M. Gazda
  • T. Klimczuk

  - PHYSICAL REVIEW B - Year 2015

  Polycrystalline HfPd2Al has been synthesized using the arc-melting method and studied under ambient-pressure conditions by x-ray diffraction from room temperature up to 450 °C. High-pressure x-ray diffraction up to 23 GPa was also performed using Diacell-type membrane diamond anvil cells. The estimated linear thermal expansion coefficient was found to be α=1.40(3)×10−5K−1, and the bulk modulus derived from the fit to the third-order...

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• Enhanced photocatalytic properties of lanthanide-TiO2 nanotubes: An experimental and theoretical study

  Publication

  • P. Mazierski
  • W. Lisowski
  • T. Grzyb
  • M. J. Winiarski
  • T. Klimczuk
  • A. Mikołajczyk
  • J. Flisikowski
  • A. Hirsch
  • A. Kołakowska
  • T. Puzyn... and 2 others

  - APPLIED CATALYSIS B-ENVIRONMENTAL - Year 2017

  A series of Er-, Yb-, Ho-, Tb-, Gd-, Pr-TiO2 nanotubes (RE-NTs) was prepared via an electrochemical method. The as-prepared photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis absorption, scanning electron microscopy (SEM) and luminescent spectroscopy. The experiments demonstrated that toluene in the gas phase was successfully degraded under visible light (LEDs λmax = 465...

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• Pool boiling of nanofluids on rough and porous coated tubes: experimental and correlation

  Publication

  • J. Cieśliński
  • T. Kaczmarczyk

  - Archives of Thermodynamics - Year 2014

  The paper deals with pool boiling of water-Al2O3 and water- Cu nanofluids on rough and porous coated horizontal tubes. Commercially available stainless steel tubes having 10 mm outside diameter and 0.6 mm wall thickness were used to fabricate the test heater. The tube surface was roughed with emery paper 360 or polished with abrasive compound. Aluminium porous coatings of 0.15 mm thick with porosity of about 40% were produced by...

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• EXPERIMENTAL ANALYSIS OF CONNECTION BETWEEN OBJECT-ORIENTED METRICS AND SOFTWARE CHANGEABILITY

  Publication

  • T. Sanner
  • A. Czyżewski

  - Year 2013

  For the purpose of video surveillance software quality assessment in this work the ISO/IEC-9126 norm was used with a particular focus on maintainability of the software system. The paper presents a study on the connection between software metrics derived from the static analysis of the source code and changeability of the video surveillance software system. It is shown that meeting requirements of software quality metrics may result...

• Water-Lubricated Sintered Bronze Journal Bearings—Theoretical and Experimental Research

  Publication

  • W. Litwin
  • A. Olszewski

  - TRIBOLOGY TRANSACTIONS - Year 2014

  Water lubricated bearings are used from many years in shipbuilding, hydro power and other industries because of their advantages such as: extensive serviceable life, low coefficient of friction, longevity of shaft sleeve, good abrasion resistance, low maintenance required, unit simplicity, no danger of pollution and low price. Various types of water lubricated sliding bearings have been tested at the Technical University of Gdansk...

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• Experimental investigation of the PEM fuel cells performance for automotive and stationary applications

  Publication

  • J. Cieśliński
  • B. Dawidowicz
  • T. Kaczmarczyk

  - Year 2013

  The aim of the study was to provide dynamic characteristics of the PEM fuel cell system consisted of Nexa modules, provide steady-state characteristics of the for different values of air excess ratio and steady-state characteristics for different stack temperatures and given load.

• Experimental investigations on condensation in flow of HFE-7100 in small diameter channels

  Publication

  • D. Mikielewicz
  • R. Andrzejczyk
  • M. Klugmann
  • J. Wajs

  - Year 2012

  W pracy przedstawiono wyniki badań eksperymentalnych kondensacji czynnika HFE-7100 w minikanale o średnicy wewnętrznej 2.3 mm. Opisano również oryginalne podejście w prowadzeniu badań nad uzyskaniem lokalnych wartości współczynnika przejmowania ciepła podczas kondensacji w przepływie.

• Experimental investigations on condensation in flow of HFE-7100 in small diameter channels

  Publication

  • D. Mikielewicz
  • R. Andrzejczyk
  • M. Klugmann
  • J. Wajs

  - Year 2012

  In the paper the authors present investigations of flow condensation with the use of the HFE-7100 as a working fluid. The original and new approach to removing the heat from the channel was applied. The research was carried out using a wide-range real time observations, e.g. using infrared camera and stroboscope microphotography. This paper presents the details of experiment as well as the influence of heat and flow parameters...

• Experimental investigation of two-phase thermosyphon heat exchanger charged with acetone

  Publication

  • J. Cieśliński
  • M. Fabrykiewicz

  - Year 2018

  This paper presents thermal characteristics of prototype of a two-phase thermosyphon heat exchanger (TPTHEx) charged with acetone as a working fluid. The TPTHEx consists of two horizontal cylindrical vessels connected by two risers and a downcomer. Tube bundles placed in the lower and upper cylinders work as an evaporator and a condenser, respectively. The tested TPTHEx operates in a vacuum. Therefore, the working liquid is boiled...

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• The statistical impact of experimental result scatter of asphalt mixtures on their numerical modelling

  Publication

  • C. Szydłowski
  • J. Górski
  • M. Stienss
  • Ł. Smakosz

  - MATEC Web of Conferences - Year 2019

  The paper presents selected test results of asphalt mixture conducted in low temperatures. The obtained parameters are highly diverse. It concerns ultimate breaking loads, stiffness parameters related to Young's modulus but also the fracture course. Statistical analysis upon the results makes it possible to relevantly estimate the material-defining parameter values. Such a random approach leads to the mean values of breaking and...

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• The basics of design and experimental tests of the commutation unit of a hydraulic satellite motor

  Publication

  • P. Śliwiński

  - Archives of Civil and Mechanical Engineering - Year 2016

  he article presents an analytical method to design the commutation unit in a hydraulic satellite motor. It is shown that the size of the holes feeding the working chambers and their location on the plates closing those chambers depends on the geometrical dimensions of the working mechanism. The overlap in the commutation unit depends on the rotational speed range. It is demonstrated that the geometrical dimensions of the commutation...

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• Experimental certification of an informationally complete quantum measurement in a device-independent protocol

  Publication

  • M. Smania
  • P. A. Mironowicz
  • M. Navareg
  • M. Pawłowski
  • A. Cabello
  • M. Bourennane

  - Optica - Year 2020

  Minimal informationally complete positive operator-valued measures (MIC-POVMs) are special kinds of measurement in quantum theory in which the statistics of their d2-outcomes are enough to reconstruct any d-dimensional quantum state. For this reason, MIC-POVMs are referred to as standard measurements for quantum information.Here, we report an experiment with entangled photon pairs that certifies, for what we believe is the first...

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• Experimental Study on the Effectiveness of Polyurethane Flexible Adhesive in Reduction of Structural Vibrations

  Publication

  • N. Lasowicz
  • A. Kwiecień
  • R. Jankowski

  - Polymers - Year 2020

  The aim of the present study is to consider the idea of using polyurethane flexible adhesive in to reduce the vibrations in structures exposed to dynamic loads and evaluate their damping properties in relation to large deformations. Firstly, two aluminium cantilever beams, simulating structural elements (without and with polyurethane layer in the form of tape), were analysed, in order to check the damping of the unconstrained polymer...

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• Achieving Efficient and Stable Deammonification at Low Temperatures—Experimental and Modeling Studies

  Publication

  • H. Al-Hazmi
  • X. Lu
  • D. Derwis
  • J. Majtacz
  • P. Kowal
  • J. Mąkinia

  - ENERGIES - Year 2021

  The short-term effects of temperature on deammonification sludge were evaluated in a laboratory-scale sequencing batch reactor (SBR). Mathematical modeling was used for further evaluations of different intermittent aeration strategies for achieving high and stable deammonification performance at decreasing temperatures. As for the biomass cultivated at high temperatures (e.g., 30 C), a higher temperature dependency (the adjusted...

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• Experimental investigations of size effect in reinforced concrete beams failing by shear

  Publication

  • E. Korol
  • J. Tejchman

  - ENGINEERING STRUCTURES - Year 2013

  W artykule omówiono wyniki doświadczalne efektu skali w zbrojonych betonowych belkach niszczących się przez ścinanie. Doświadczenia wykonano dla belek o różnych wymiarach ze zbrojeniem stalowym i bazaltowym. Podczas doświadczeń pomierzono siłę oraz szerokości lokalizacji i rys. Wyniki porównano z modelem skali wg Bazanta.

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• Experimental and theoretical studies on resonance dynamic effects during silo flow.

  Publication

  • M. Niedostatkiewicz
  • J. Tejchman

  - Powder Handling and Processing - Year 2003

  Przedstawiono badania nad rezonansowymi efektami dynamicznymi podczas przepływów silosowych. Wpływ rezonansu na wielkość naporu był analizowany przy pomocy badań doświadczalnych i obliczeń MES na bazie prawa mikropolarnego sprężysto-plastycznego. Zaproponowano efektywną metodę redukcji efektów dynamicznych.

• Experimental and theoretical studies of resonance effects during confined flow in silos

  Publication

  • M. Niedostatkiewicz
  • J. Tejchman

  - TASK Quarterly - Year 2003

  Przedstawiono badania nad rezonansowymi efektami dynamicznymi podczas przepływów silosowych. Wpływ rezonansu na wielkość naporu był analizowany przy pomocy badań doświadczalnych i obliczeń MES na bazie prawa mikropolarnego sprężysto-plastycznego. Doświadczenia wykonano w silosie o przekroju okrągłym i prostokątnym. Zaproponowano efektywną metodę redukcji efektów dynamicznych. Obliczenia wykonano dla dużych i małych silosów.

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• Joint experimental and theoretical study on low-energy elastic electron scattering by gaseous alkynes: Differential cross sections, shape resonances, and methylation effects

  Publication

  • M. Khakoo
  • G. Tatreau
  • J. G. Childers
  • K. Oen
  • J. Fernandez
  • B. Hlousek
  • M. Zawadzki
  • F. P. Bardela
  • L. V. S. Dalagnol
  • G. M. Moreira... and 2 others

  - PHYSICAL REVIEW A - Year 2022

  A detailed comparison of experimental and theoretical elastic cross sections for low-energy electron scattering by ethyne, taken earlier in our group by Gauf et al. [Phys. Rev. A 87, 012710 (2013)], and some of its methylated derivatives, propyne, and the isomers 1-butyne and 2-butyne, taken here, are presented. The present differential cross sections were measured at incident electron energies ranging from 1 eV to 30 eV and...

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• Uncertainty quantification of modal parameter estimates obtained from subspace identification: An experimental validation on a laboratory test of a large-scale wind turbine blade

  Publication

  • S. Greś
  • R. Riva
  • C. Y. Süleyman
  • P. Andersen
  • M. Łuczak

  - ENGINEERING STRUCTURES - Year 2022

  The uncertainty afflicting modal parameter estimates stems from e.g., the finite data length, unknown, or partly measured inputs and the choice of the identification algorithm. Quantification of the related errors with the statistical Delta method is a recent tool, useful in many modern modal analysis applications e.g., damage diagnosis, reliability analysis, model calibration. In this paper, the Delta method-based uncertainty...

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• Advances in Hygiene and Experimental Medicine

  Journals

  ISSN: 0032-5449 , eISSN: 1732-2693

• CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY

  Journals

  ISSN: 0305-1870 , eISSN: 1440-1681

• Metoda badania powłok ceramicznych w ruchu postępowo-zwrotnym = A method for testing of ceramic coatings under reciprocating sliding

  Publication

  • K. Druet

  - TRIBOLOGIA - Year 2008

  Opracowano metodę badania powłok ceramicznych w warunkach tarcia ślizgowego na próbkach tworzących układ o styku niekonforemnym kula - powierzchnia płaska. Pokryte warstwą ceramiczną kule dociskano do próbek płaskich - prostopadłościennych listew (również pokrytych ceramiką), wykonujących ruch postępowo-zwrotny. Jako stanowisko badawcze zastosowano Tribometr Posuwisto-zwrotny TPZ-1. Przebieg zużywania się powłoki ceramicznej oceniano...

• Chassis Dynamometer Testing of Ammonia Emissions from Light-Duty SI Vehicles in the Context of Emissions of Reactive Nitrogen Compounds

  Publication

  • J. Woodburn
  • P. Bielaczyc
  • A. Szczotka

  - Year 2013

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• A chamber for testing the release of volatile substances secreted by animals, especially mammals, as exemplified by substances released by rats in response to stress

  Publication

  • R. Hauser
  • M. Marczak
  • J. Namieśnik
  • B. Karaszewski

  - Year 2005

  Powodzenie badań lotnych związków organicznych emitowanych przez zwierzęta zależy od stworzenia odpowiednich warunków do pobierania próbek używanych do ich izolacji i identyfikacji. Warunki te odgrywają ważną rolę w badaniach feromonów, które występują na bardzo niskich poziomach stężeń. W dostępnej literaturze autorzy nie znaleźli rozwiązania pozwalającego uniknąć zanieczyszczenia pobieranych próbek powietrza zawierających lotne...

• Testing Question Order Effects of Self-perception of Risk Propensity on Simple Lottery Choices as Measures of the Actual Risk Propensity

  Publication

  • J. Golik

  - ASK: RESEARCH & METHODS - Year 2018

  Uncertainty together with the necessity of making choices inevitably results in risky decisions. For many years now, scientists have been studying notions connected with risk such as risk management, risk perception or risk propensity. While many sophisticated methods regarding measurement of risk propensity have been developed so far, it seems that little attention has been paid to checking whether they are not inherently flawed....

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• Experimental study and numerical simulation on porosity dependent direct reducibility of high-grade iron oxide pellets in hydrogen

  Publication

  • B. Sadeghi
  • P. Cavaliere
  • M. Bayat
  • N. Ebrahimzadeh Esfahani
  • A. Mirowska
  • D. Koszelow

  - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Year 2024

  The transition to more environmentally friendly steel production methods has intensified research into hydrogen-based direct reduction (HyDR) of iron oxide pellets. The aim of this study is to systematically investigate the kinetics of the reduction process, the evolution of porosity and the resulting microstructural changes on the reduction behavior of high-quality pellets during HyDR of iron ore at different temperatures. A modified...

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• Semeia: An Experimental Journal for Biblical Criticism

  Journals

  ISSN: 0095-571X

• CURRENT THERAPEUTIC RESEARCH-CLINICAL AND EXPERIMENTAL

  Journals

  ISSN: 0011-393X , eISSN: 1879-0313

• DRUGS UNDER EXPERIMENTAL AND CLINICAL RESEARCH

  Journals

  ISSN: 0378-6501

• PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY

  Journals

  ISSN: 0031-9457 , eISSN: 1851-5657

• International Journal of Clinical and Experimental Pathology

  Journals

  ISSN: 1936-2625

• American Journal of Clinical and Experimental Immunology

  Journals

  ISSN: 2164-7712

• Romanian Journal of Experimental Applied Psychology

  Journals

  ISSN: 2069-1971

• International Journal of Clinical and Experimental Medicine

  Journals

  ISSN: 1940-5901

• American Journal of Clinical and Experimental Urology

  Journals

  ISSN: 2330-1910

• Journal of Experimental Biology and Agricultural Sciences

  Journals

  ISSN: 2320-8694

• JOURNAL OF TRACE ELEMENTS IN EXPERIMENTAL MEDICINE

  Journals

  ISSN: 0896-548X

• Journal of Experimental and Clinical Medicine (Turkey)

  Journals

  ISSN: 1309-4483

• Serbian Journal of Experimental and Clinical Research

  Journals

  ISSN: 1820-8665

• African Journal of Clinical and Experimental Microbiology

  Journals

  eISSN: 1595-689X

• International Journal of Clinical and Experimental Hypnosis

  Journals

  ISSN: 0020-7144 , eISSN: 1744-5183

• Tokai Journal of Experimental and Clinical Medicine

  Journals

  ISSN: 0385-0005

• Australian Journal of Clinical and Experimental Hypnosis

  Journals

  ISSN: 0156-0417

• GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY

  Journals

  ISSN: 0721-832X , eISSN: 1435-702X

• CERN IdeaSquare Journal of Experimental Innovation

  Journals

  eISSN: 2413-9505

• European Journal of Clinical and Experimental Medicine

  Journals

  ISSN: 2544-2406 , eISSN: 2544-1361

• JOURNAL OF EXPERIMENTAL & THEORETICAL ARTIFICIAL INTELLIGENCE

  Journals

  ISSN: 0952-813X , eISSN: 1362-3079

• JOURNAL OF BEHAVIOR THERAPY AND EXPERIMENTAL PSYCHIATRY

  Journals

  ISSN: 0005-7916 , eISSN: 1873-7943