Wyniki wyszukiwania dla: TENSION AND TORSION TEST

• FEM modelling of screw displacement pile interaction with subsoil

  Publikacja

  • P. Więcławski
  • A. Krasiński

  - Archives of Civil Engineering - Rok 2023

  Predicting the-settlement characteristics of piles is an important element in the designing of pile foundations. The most reliable method in evaluating pile-soil interaction is the static load test, preferably performed with instrumentation for measuring shaft and pile base resistances. This, however, is a mostly post-implementation test. In the design phase, prediction methods are needed, in which numerical simulations play an...

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• Numerical Modeling and Simulation of Vehicular Crashes into Three-Bar Metal Bridge Rail

  Publikacja

  • H. Fang
  • C. Jaus
  • Q. Wang
  • E. Palta
  • Ł. Pachocki
  • D. Bruski

  - Computation - Rok 2024

  Advanced finite element (FE) modeling and simulations were performed on vehicular crashes into a three-bar metal bridge rail (TMBR). The FE models of a sedan, a pickup truck, and a TMBR section were adopted in the crash simulations subject to Manual for Assessing Safety Hardware (MASH) Test Level 2 (TL-2) and Test Level 3 (TL-3) requirements. The test vehicle models were first validated using full-scale physical crash tests conducted...

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• Low Cost Hexacopter Autonomous Platform for Testing and Developing Photogrammetry Technologies and Intelligent Navigation Systems

  Publikacja

  • P. Burdziakowski

  - Rok 2017

  Low-cost solutions for autonomous aerial platforms are being intensively developed and used within geodetic community. Unmanned aerial vehicles are becoming very popular and widely used for photogrammetry and remote sensing applications. Today’s market offers an affordable price components for unmanned solution with significant quality and accuracy growth. Every year market offers a new solutions for autonomous platforms with better...

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• Individual Characteristics and Cognitions of Students with Different Levels of Entrepreneurial Intensity

  Publikacja

  • P. Ziemiański

  - HORYZONTY WYCHOWANIA - Rok 2018

  RESEARCH OBJECTIVE: The objective of the current paper is to verify in what way university students who declare high individual level of entrepreneurial intensity differ from those who are characterized by its intensity level. THE RESEARCH PROBLEM AND METHODS: A statistical analysis of obtained survey results was conducted. The group of research participants included 413 business students. Following statistical methods were used...

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• Field investigation of low-temperature cracking and stiffness moduli on selected roads with conventional and high modulus asphalt concrete

  Publikacja

  • J. Judycki
  • M. Jaczewski
  • D. Ryś
  • M. Pszczoła
  • P. Jaskuła
  • A. Glinicki

  - IOP Conference Series: Materials Science and Engineering - Rok 2017

  High Modulus Asphalt Concrete (HMAC) was introduced in Poland as a one of the solutions to the problem of rutting, type of deterioration common in the 1990s. After first encouraging trials in 2002 HMAC was widely used for heavily loaded national roads and motorways. However some concerns were raised about low-temperature cracking of HMAC. This was the main reason of the studies presented in this article were started. The article...

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• Effect of the welding environment and storage time of electrodes on the diffusible hydrogen content in deposited metal

  Publikacja

  • J. Tomków
  • D. Fydrych
  • G. Rogalski
  • J. Łabanowski

  - REVISTA DE METALURGIA - Rok 2019

  In the study the glycerin displacement method was used for determination of diffusible hydrogen content in deposited metal. Specimens were welded in the air and in the water with covered rutile electrodes. The first part of the specimens was made immediately after opening the package of the electrodes. The electrodes were then stored in opened packages in laboratory conditions that allowed for contact with the air for three years....

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• Nitrogen transformation during fermentation in agricultural biogas plants

  Publikacja

  • A. Wilińska-Lisowska
  • O. K. Roubinek
  • A. G. Chmielewski
  • K. Czerwionka

  - Biomass Conversion and Biorefinery - Rok 2023

  The aim of the present study was to determine changes in the organic nitrogen fraction in the liquid fraction of the digestate during laboratory tests of mono- and co-digestion. Three agricultural wastes were tested: distillery residue, cattle slurry and corn silage. In the mono-fermentation tests, the initial total nitrogen concentration depended on the feedstock used. As a result of the hydrolysis and ammonification of the organic...

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• Degradation of ferritic X10CrAlSi18 stainless steel caused by slurry

  Publikacja

  • A. Krella
  • M. Buszko
  • G. Gajowiec

  - ENGINEERING FAILURE ANALYSIS - Rok 2020

  The slurry erosion tests of ferritic X10CrAlSi18 steel were carried out using a slurry pot device. In order to investigate the erosion process, two series of tests were performed: first one with a constant impact velocity of 5 m/s, 7 m/s and 9 m/s and the second one, during which the impact velocity was changed after every exposure. During each test, an influence of test conditions on volume loss, surface hardness and roughness...

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• Testing HIADAC high impedance analyzer in Trento University laboratory on Baunier's RC model using 2 wire probe

  Dane Badawcze

  open access

  • G. Lentka
  • J. Hoja

  - seria: HIADAC testing in Univeristy of Trento laboratory

  The dataset presents impedance spectrum of Baunier's RC model. This object was used to test high-impedance analyzer for diagnostic of anticorossion coatings (HIADAC) realized in the frame of Eureka project E!3174.  The impedance spectrum frequency range (1 mHz – 100 kHz) was selected in order to test the whole measureement range of the analyzer. In...

• TiN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B48/#A45

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 12 min....

• TiC coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B41/#A39

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiC over TiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 9 min....

• CrN coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #A23/#B22

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN  over CrN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration 12 min. The...

• TiC coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #B39/#A41

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of TiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiC over TiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  3 min. The test...

• SiC coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #B34/#A33

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of SiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, SiC over SiC. Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  3 min. The test...

• TiN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A45/#B48

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 12 min....

• TiC coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #A41/#B39

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of TiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiC  over TiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  3 min. The...

• CrN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A25/#B21

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN  over CrN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 9 min....

• CrN coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #B22/#A23

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN over CrN. Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  6 min. The test...

• SiC coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #A33/#B34

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of SiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, SiC  over SiC. Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  3 min. The test...

• OCENA NOŚNOŚCI STAREGO MOSTU ŁUKOWEGO W JAGODNIKU

  Publikacja

  • M. Malinowski
  • A. Ambroziak

  - Rok 2021

  Artykuł opisuje przeprowadzoną analizę statyczno-wytrzymałościowa 95-letniego betonowego mostu łukowego zlokalizowanego w Jagodniku w północnej Polsce. Trwałość i wytrzymałość starego betonu są określane na podstawie wybranych właściwości mechanicznych, fizycznych i chemicznych. Program badań laboratoryjnych składał się z następującego zestawu badań: pomiary głębokości strefy skarbonatyzowanej i gęstości w stanie suchym, badania...

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• Mechanizm współpracy z gruntem pali prefabrykowanych wbijanych w świetle próbnych obciążeń pali oprzyrządowanych

  Publikacja

  • A. Krasiński
  • K. Gwizdała
  • T. Kusio
  • P. Więcławski
  • M. Wiszniewski

  - Inżynieria Morska i Geotechnika - Rok 2020

  Opis badań i wyniki próbnych obciążeń statycznych dwóch pali prefabrykowanych wbijanych oprzyrządowanych w aparaturę do pomiaru rozkładu siły osiowej wzdłuż trzonu pala. Analiza wpływu czasu i procesu wbijania na charakterystykę osiadania pali prefabrykowanych wbijanych. Identyfikacja siły rezydualnej w palu prefabrykowanym wbijanym i jej wpływ na interpretację pomiarów ekstensometrycznych w próbnym obciążeniu pala. Wnioski na...

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• Impact of inorganic ions and pH variations on toxicity and endocrine potential of selected environmentally relevant pharmaceuticals

  Publikacja

  • M. Wieczerzak
  • B. Kudłak
  • G. Yotova
  • S. Tsakovski
  • V. Simeonov
  • J. Namieśnik

  - ENVIRONMENTAL POLLUTION - Rok 2018

  Assessment of the impact of pharmaceutical residues on living organisms is a very complex subject. Apart from taking into account the toxicity of individual compounds, environmental factors should also be taken into account. In this paper, attempts were made to assess the impact of coexisting inorganic ions and changes in pH on the toxicity of ten selected pharmaceuticals. Two bioassays were used to measure the estrogenic and androgenic...

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• A novel chemiluminescent immunoassay for detection of Toxoplasma gondii IgG in human sera

  Publikacja

  • L. Holec-Gąsior
  • B. Ferra
  • J. Czechowska
  • I. E. Serdiuk
  • K. Krzymiński
  • J. Kur

  - DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE - Rok 2016

  This study describes Toxoplasma gondii IgG chemiluminescent immunoassay (CLIA) based on the use of a novel immunochemical reagents in the form of the conjugates of original acridinium ester (AE) labels attached to antibodies and SAG2-GRA1-ROP1L chimeric antigen and shows that this test is useful for diagnostic purposes.

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• Influence of Spatial Structures of 316L Stainless Steel on Its Cavitation Erosion Resistance

  Publikacja

  • B. Śniegocka
  • M. Szkodo
  • J. Chmiel

  - Solid State Phenomena - Rok 2015

  Cavitation erosion performance of modified macroscopic internal structure 316L stainless steel was investigated. The samples processed by means of SLM method were subjected to cavitation erosion test. The scanning electron microscope Philips 30/ESEM was used to examine morphology of eroded surface.

• Estimation of Synchronous Generator and AVR Parameters Based on Gradient and Genetic Methods

  Publikacja

  • K. Dobrzyński

  - Przegląd Elektrotechniczny - Rok 2023

  The author present a method for the estimation of selected synchronous generator model and AVR parameters using a gradient and a genetic algorithm. The paper shows an example of model parameter estimation for a turbogenerator, based on the generator voltage time responses obtained during an active and reactive power rejection test

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• Testing HIADAC high impedance analyzer in Trento University laboratory on Baunier's RC model using 3 wire probe

  Dane Badawcze

  open access

  • G. Lentka
  • J. Hoja

  - seria: HIADAC testing in Univeristy of Trento laboratory

  The dataset presents impedance spectrum of Baunier's RC model. This object was used to test high-impedance analyzer for diagnostic of anticorossion coatings (HIADAC) realized in the frame of Eureka project E!3174.  The impedance spectrum frequency range (1 mHz – 100 kHz) was selected in order to test the whole measureement range of the analyzer. In...

• Testing HIADAC high impedance analyzer in Trento University laboratory on "unknown" object using 2-wire probe

  Dane Badawcze

  open access

  • G. Lentka
  • J. Hoja

  - seria: HIADAC testing in Univeristy of Trento laboratory

  The dataset presents impedance spectrum of "black-box" object with interesting phase characteristics. This object was used to test high-impedance analyzer for diagnostic of anticorossion coatings (HIADAC) realized in the frame of Eureka project E!3174.  The impedance spectrum frequency range (1 Hz – 100 kHz) was selected in order to test the whole measureement...

• Transmission measurements between two geometrically small Vivaldi antennas performed in non-anechoic propagation conditions

  Dane Badawcze

  open access

  • M. Dzwonkowski
  • V. Waladi
  • A. Bekasiewicz

  The dataset contains unprocessed measurements of complex transmission (and reflection) characteristics obtained in non-anechoic regime for a geometrically small, broadband spline-parameterized Vivaldi structure. The measurement setup comprises two Vivaldi antennas with the same topology where one is used as a reference structure, and another one as...

• CrN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B21/#A21

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN  over CrN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 25 min....

• TiN coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #A45/#A47

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN. Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  20 min. The test...

• TiN coating in ring-on-ring sliding with distlled water lubrication 5MPa, 0.1m/s specimn. #A45/#B45

  Dane Badawcze

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - seria: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. distilled water lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN. Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: DISTILLED WATER. Tribometer: PT-3. Overall test time till coating penetration  90 min. The test...

• Influence of operating pressure on the durability of a satellite hydraulic motor supplied by rapeseed oil

  Publikacja

  • P. Śliwiński

  - Scientific Reports - Rok 2024

  This article describes the results of a durability test of a hydraulic satellite motor supplied by rapeseed oil. The tests were carried out on a test stand in a power recuperation system. The tests of the motor were carried out at a constant shaft speed for three fixed pressure drops in the motor. This made it possible to demonstrate the influence of the motor operating pressure on the durability of the satellite mechanism. The...

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• Signal filtering method of the fast-varying diesel exhaust gas temperature

  Publikacja

  • P. Puzdrowska

  - Combustion Engines - Rok 2018

  The paper presents the problem of the impact of external distortions originating on laboratory test stands on the results of measurements of fast-varying diesel exhaust gas temperature. It has been stressed how significant the aspect of the test stand adaptation is during an experiment to ensure the smallest possible impact. This paper, however, focuses on the methods of mathematical processing of a signal recorded during experimental...

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• Hydraulic valve design methodology for hydro turbine control system

  Publikacja

  • M. Kosek
  • P. Śliwiński
  • D. Downar

  - FLOW MEASUREMENT AND INSTRUMENTATION - Rok 2024

  The control of the turbine and its equipment in a hydroelectric power plant requires the HPU (hydraulic power unit) to deliver large volumes of working fluid in a short time at specific optimum control parameters. The use of typical proportional flow control valves created by manufacturers of hydraulic components in low-pressure control systems is disadvantageous due to high pressure losses in the control chambers. This paper presents...

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• On degradation of glass/polyester laminate immersed in water

  Publikacja

  • M. Landowski
  • M. Budzik
  • K. Imielińska

  - Advances in Materials Science - Rok 2011

  Mechanical behaviour was compared for glass/ polyester laminates manufactured in the boatbuilding plant using three methods: hand lay-up, vacuum bagging, infusion. Specimens were tested in dry condition and following accelerated water immersion test (70°C- corresponding to the exposure of 30 years at 19°C). In three point bending test 40-50% reduction in laminate strength was observed due to water immersion. The highest degradation...

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• New Two-center Ellipsoidal Basis Function Neural Network for Fault Diagnosis of Analog Electronic Circuits

  Publikacja

  • M. Kowalewski
  • R. Zielonko

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Rok 2010

  In the paper a new fault diagnosis-oriented neural network and a diagnostic method for localization of parametric faults in Analog Electronic Circuits (AECs) with tolerances is presented. The method belongs to the class of dictionary Simulation Before Test (SBT) methods. It utilizes dictionary fault signatures as a family of identification curves dispersed around nominal positions by component tolerances of the Circuit Under Test...

• Rotor Blade Geometry Optimisation in Kaplan Turbine

  Publikacja

  • M. Banaszek
  • K. Tesch

  - TASK Quarterly - Rok 2010

  The paper presents the description of method and results of rotor blade shape optimisation. The rotor blading constitutes a part ofturbine flow path. Optimisation consists in selection of the shape that minimises ratio of polytrophic loss. Shape of the blade isdefined by the mean camber line and thickness of the airfoil. Thickness is distributed around the camber line based on the ratio ofdistribution. Global optimisation was done...

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• Large deformation modelling of CPT probing in soft soil—pore water pressure analysis

  Publikacja

  • J. Konkol
  • L. Bałachowski

  - Rok 2018

  This paper presents the results of finite element modelling with Updated Lagrangian formulation of the Cone Penetration Test in soft soil deposit located in Jazowa, Poland. The numerical calculations are carried out for homogenous, normally consolidated, organic soil layer. The Modified Cam Clay constitutive model for soft soil and Coulomb model for interface are used. The study compares the registered pore water pressure distributions...

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• Identification of residual force in static load tests on instrumented screw displacement piles

  Publikacja

  • A. Krasiński
  • M. Wiszniewski

  - Studia Geotechnica et Mechanica - Rok 2021

  Occurrence of the so-called residual force of an unknown value significantly disturbs interpretation of static load tests performed on piles equipped with additional measuring instruments. Screw displacement piles are the piling technology in which the residual force phenomenon is very common. Its formation mechanism is closely related to the installation method of this type of piles, which initiates generation of negative pile...

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• Selecting wells for an optimal design of groundwater monitoring network based on monitoring priority map: A Kish Island case study

  Publikacja

  • H. Amiri
  • S. Azadi
  • S. Javadpour
  • A. A. Naghavi
  • G. Boczkaj

  - Water Resources and Industry - Rok 2022

  This paper presents a novel approach, i.e. a combination of gamma test and monitoring priority map, for optimal design of groundwater monitoring network (GMN) by considering the cumulative effects of industries, human activities, and natural factors on the groundwater quality. The proposed method was successfully applied to design an optimal network for groundwater salinity monitoring on Kish Island, Persian Gulf. The priority...

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• Application of the F-statistic of the Fisher-Snedecor distribution to analyze the significance of the effect of changes in the compression ratio of a diesel engine on the value of the specific enthalpy of the exhaust gas flow

  Publikacja

  • P. Puzdrowska

  - Combustion Engines - Rok 2021

  The paper discusses the impact of changes in the compression ratio on the operating parameters of a diesel engine, e.g. on the temperature of exhaust gases. It presents the construction of the laboratory test stand, on which experimental measurements were realized. It is characterized how the actual changes of the compression ratio were introduced to the existing engine. The program of experimental investigations taking into account...

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• HEAVE MOTION OF A VERTICAL CYLINDER WITH HEAVE PLATES

  Publikacja

  • E. Ciba

  - Polish Maritime Research - Rok 2021

  The shape of a vertical cylinder resembles the classic form of a spar platform. Spar platforms are floating platforms that are successfully used in waters of great depths and have several advantages that mean they are readily used in the oil industry. Many of these advantages are also relevant to their application for offshore wind turbines, which is currently being considered. In the hydrodynamic analysis of spar platforms, the...

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• Bearing Capacity of aluminum bars with built-up cross section and glued or welded connections

  Publikacja

  • M. Krajewski
  • P. Iwicki

  - Key Engineering Materials - Rok 2016

  The paper is focused on numerical analysis and experimental test of aluminum bars with glued and welded connections between separate members. The connection properties were tested experimentally. The numerical analysis were conducted for the beam and shell model of the structure. The shape and magnitude of initial geometric imperfection was taken into account

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• Results of tests on speech intelligibility in reverberant conditions

  Dane Badawcze

  open access

  • P. Odya
  • B. Kostek
  • J. Kotus
  • A. Kurowski

  The dataset contains the results of tests that aimed to provide a relationship between the rate of speech (RoS) and reverberation conditions characterized by the Speech Transmission Index (STI).

• Acoustic emission signals in concrete beams under 3-point bending (beams #1, #2, #3)

  Dane Badawcze

  open access

  • M. Rucka
  • M. Nitka
  • M. Knak

  The DataSet contains the results of the mechanical behaviour of concrete beams with dimensions 40 x 40 x 160 cm3under the 3-point bending. The beams were made of concrete with the following ingredients: cement CEM I 42.5R (330 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3), water (165 kg/m3) and super-plasticizer...

• Mersenne Number Finding and Collatz Hypothesis Verification in the Comcute Grid System

  Publikacja

  • J. Balicki
  • W. Korłub
  • J. Masiejczyk
  • J. Paluszak

  - Rok 2012

  In this chapter, some mathematic applications have been described to test scalability of the Comcute grid system. Especially, a verification of the Collatz hypothesis and finding Mersenne numbers were applied to prove the scalability and high performance of this grid system. Results were compared with outcomes obtained by the other grid systems.

• Eye Blink Based Detection of Liveness in Biometric Authentication Systems Using Conditional Random Fields

  Publikacja

  • M. Szwoch
  • P. Pieniążek

  - Rok 2012

  The goal of this paper was to verify whether the conditional random fields are suitable and enough efficient for eye blink detection in user authentication systems based on face recognition with a standard web camera. To evaluate this approach several experiments were carried on using a specially developed test application and video database.

• Impact of power electronic Var compensators installed in certain grid points on the voltage failure

  Publikacja

  • R. Kowalak
  • R. Zajczyk

  - Rok 2012

  The article presents the test results of the various types of static compensators FACTS models in the power system. The basic case, which was analyzed, it was behavior of compensators which are installed in select points of the system during voltage failure. The article presents selected results of studies conducted as part of a work [2].

• Critical review of propeller performance scaling methods based on model experiments and numerical calculations

  Publikacja

  • T. Bugalski
  • J. Szantyr
  • H. Streckwall

  - Polish Maritime Research - Rok 2013

  The article presents the results of experimental and theoretical investigation of propeller scale effects. The objective of this investigation is to test the adequacy of the methods currently used and to develop possible improvement of the methods.New approaches to the problem and new procedures to account for the propeller scale effects are suggested. The description of the underlying experimental and theoretical research is included.

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• Drum Replacement Using Wavelet Filtering Podmienianie próbek perkusyjnych przy zastosowaniu filtracji falkowej

  Publikacja

  • R. Barański
  • S. Piotrowski
  • M. Piotrowska

  - Rok 2013

  The paper presents the solution that can be used to unify snare drum sound within a chosen fragment. The algorithm is based on the wavelet transformation and allows replacement of sub-bands of particular sounds, which are outside a certain range. Five experienced sound engineers put the algorithm under the test using

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