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Search results for: EXPERIMANTAL TESTS
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Experimental an numerical investigation of wave propagation in composite beam with an additional mass
PublicationW pracy przedstawiono wyniki badań eksperymentalnych i symulacji numerycznych ilustrujace wpływ dodatkowej masy na propagacje fali Lamba w belce kompozytowej.
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Theoretical and experimental flow analysis through the model water turbine stage
PublicationW artykule zaprezentowano teoretyczną i eksperymentalną analizę przepływu przez stopień modelowej turbiny wodnej. Przedstawiono rozwiązanie zadania prostego dla dwuwymiarowego modelu przepływu. Zaprezentowano przykład numerycznej symulacji przepływu za pomocą komeryjnych kodów obliczeniowych oraz porównano wyniki symulacji numerycznych przepływu z wynikami badań eksperymentalnych.
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Experimental and Numerical Investigations of the Effect of Curing Conditions on the Temperature Rise of Concrete
PublicationThis paper presents experimental and numerical studies investigating the impact of three curing conditions on temperature evolution in concrete cubes. The tests were performed on samples of the same volume (3.375 dm3) under different curing conditions: room temperature, insulation boxes, and adiabatic calorimeter. Various cements (Portland cement, Portland composite cement, and blast furnace slag cement) and aggregates (gravel...
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AN EXPERIMENTAL AND NUMERICAL STUDY ON THE PERFORMANCE OF AN INNOVATIVE VERTICAL-AXIS WIND TURBINE
PublicationThis paper introduces the innovative modification of the Savonius wind turbine being able to significantly increase efficiency in comparison with the classic design. This innovative design is equipped with a stator directing the flow. The presence of the stator increases the active surface area and generates higher torques acting on a shaft. Additionally, it makes it possible to take better advantage of wind energy and compensate...
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Higher harmonics produced by traction substations – computer modelling and experimental verification
PublicationVoltage and current harmonics have a detrimental effect on the components of a power system. Current harmonics may result in the overload and damage to power transformers, although the rms value of load current does not exceed their current-carrying capacity. Voltage harmonics may result in, for example, damage to capacitor banks used to compensate reactive power. Devices which contribute to both current and voltage distortion...
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Enhanced photocatalytic properties of lanthanide-TiO2 nanotubes: An experimental and theoretical study
PublicationA 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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Experimental study of natural convection heat transfer from horizontal conic
PublicationPrzedstawiono badania eksperymentalne i ich wyniki konwekcji swobodnej w wodzie i powietrzu poziomych stożków o kącie przy podstawie 30, 45 i 60 deg. Wyniki badań wykazują dobrą zgodność z rozwiązaniem teoretycznym i z danymi literaturowymi.
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Combined numerical and experimental approach to determine numerical model of abdominal scaffold
PublicationA proper junction of the prosthesis and the abdominal wall is important in successful hernia repair. The number of tacks should be balanced to assure appropriate mesh fixation and not to induce post-operative pain. Numerical simulations help to find this balance. The study is aimed at creating a proper numerical model of a knitted surgical mesh subjected to boundary conditions and load occurring in the abdominal cavity. Continuous,...
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50’ Sail Catamaran with Hybrid Propulsion, Design, Theoretical and Experimental Studies
PublicationThe development of modern lithium batteries and propulsion systems now allows the use of complex propulsion systems for vessels of various sizes. As part of the research and implementation project, a parallel hybrid drive system was designed, built and then tested in the laboratory. The experimental studies conducted allowed for the measurements of power, fuel consumption and electric power distribution in various operating modes...
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Debonding of coin-shaped osseointegrated implants: Coupling of experimental and numerical approaches
PublicationWhile cementless implants are now widely used clinically, implant debonding still occur and is difficult to anticipate. Assessing the biomechanical strength of the bone–implant interface can help improving the understanding of osseointegration phenomena and thus preventing surgical failures. A dedicated and standardized implant model was considered. The samples were tested using a mode III cleavage device to assess the mechanical...
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Experimental Investigation of Elastic Waves Propagation in 1D and 2D Structures with Faults.
PublicationW pracy omówiono wyniki pomiarów fal sprężystych w prętach, belkach i płytach z uszkodzeniami.
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Experimental investigations of size effect in reinforced concrete beams failing by shear
PublicationW 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.
PublicationPrzedstawiono 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.
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Experimental and theoretical studies of resonance effects during confined flow in silos
PublicationPrzedstawiono 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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Results of acoustic emission tests of corrosion protection degree of ship steel tanks covered by means of protective coatings (Phase I)
PublicationThis paper presents methods and results of the 1st series of tests of acoustic emission (AE) signals, aimed at assessing degree of corrosion protection of a tank made of hull structural steel, protected by means of a protective coating combined from polyurethane layer and concrete filler. The tests were carried outin compliance with a method specially elaborated for application to the work in question. In the method were used requirements...
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Physics-based protein-structure prediction using a hierarchical protocol based on the UNRES force field: Assessment in two blind tests
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Optimization of the UNRES Force Field by Hierarchical Design of the Potential-Energy Landscape. 2. Off-Lattice Tests of the Method with Single Proteins
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PRELIMINARY FIELD TESTS AND LONG-TERM MONITORING AS A METHOD OF DESIGN RISK MITIGATION: A CASE STUDY OF GDAŃSK DEEPWATER CONTAINER TERMINAL
PublicationAppropriate risk assessment plays a fundamental role in the design. . The authors propose a possible method of design risk mitigation, which follows recommendations included in Eurocode 7. The so-called “Observational Method” (OM) can produce savings in costs and programmes on engineering projects without compromising safety. The case study presented is a complex design solution that deals with the heavy foundations of a gantry...
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Effect of Chitosan Solution on Low-Cohesive Soil’s Shear Modulus G Determined through Resonant Column and Torsional Shearing Tests
PublicationIn this study the effect of using a biopolymer soil stabilizer on soil stiffness characteristics was investigated. Chitosan is a bio-waste material that is obtained by chemical treatment of chitin (a chemical component of fungi or crustaceans’ shells). Using chitosan solution as a soil stabilizer is based on the assumption that the biopolymer forms temporary bonds with soil particles. What is important is that these bonds are biodegradable,...
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First tests of water lubricated propeller shaft bearings = Wstępne badania zespołu smarowanych wodą łożysk okrętowego wału śrubowego
PublicationW pierwszej części referatu zaprezentowano nowe stanowsko badawcze przy pomocy którego można badać smarowane wodą łożyska wału śrubowego. W drugiej części pracy przedstawiono uzyskane wyniki pomiarów oporów ruchu i trajektorii osi wału.
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Mode shapes of a beam and plate with defects, obtained by experimental modal analysis
Open Research DataThe DataSet contains the experimental results of the first mode shape for a beam and a plate.
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Spatio-Temporal Variation in Predation on Artificial Ground Nests: A 12-Year Experiment
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Wykorzystanie testu mikrojądrowego do oceny genotoksyczności odcieków ze składowisk odpadów
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Implementacja i testy architektury bezpieczeństwa na poziomie 2 Systemu IIP
PublicationProjekt Inżynieria Internetu Przyszłości (IIP) rozwija koncepcję infrastruktury transmisyjnej, stanowiącej jednolity system komunikacyjny (System IIP) do obsługi strumieni danych pochodzących od trzech rodzajów sieci nazywanych Równoległymi Internetami. Architektura tego systemu obejmuje cztery poziomy, przy czym poziom 2 odpowiada za tworzenie i utrzymywanie łączy i węzłów wirtualnych. Niniejsze opracowanie przedstawia rozszerzony...
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CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY
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Semeia: An Experimental Journal for Biblical Criticism
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CURRENT THERAPEUTIC RESEARCH-CLINICAL AND EXPERIMENTAL
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DRUGS UNDER EXPERIMENTAL AND CLINICAL RESEARCH
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PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
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International Journal of Clinical and Experimental Pathology
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American Journal of Clinical and Experimental Immunology
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Romanian Journal of Experimental Applied Psychology
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International Journal of Clinical and Experimental Medicine
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American Journal of Clinical and Experimental Urology
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Journal of Experimental Biology and Agricultural Sciences
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JOURNAL OF TRACE ELEMENTS IN EXPERIMENTAL MEDICINE
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Journal of Experimental and Clinical Medicine (Turkey)
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Serbian Journal of Experimental and Clinical Research
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African Journal of Clinical and Experimental Microbiology
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International Journal of Clinical and Experimental Hypnosis
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Tokai Journal of Experimental and Clinical Medicine
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Australian Journal of Clinical and Experimental Hypnosis
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GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
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CERN IdeaSquare Journal of Experimental Innovation
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European Journal of Clinical and Experimental Medicine
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JOURNAL OF EXPERIMENTAL & THEORETICAL ARTIFICIAL INTELLIGENCE
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JOURNAL OF BEHAVIOR THERAPY AND EXPERIMENTAL PSYCHIATRY
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JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
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METHODS AND FINDINGS IN EXPERIMENTAL AND CLINICAL PHARMACOLOGY
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JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH
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