Search results for: TENSION AND TORSION TEST

• Nitrogen transformation during fermentation in agricultural biogas plants

  Publication

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

  - Biomass Conversion and Biorefinery - Year 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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• Numerical Modeling and Simulation of Vehicular Crashes into Three-Bar Metal Bridge Rail

  Publication

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

  - Computation - Year 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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• Degradation of ferritic X10CrAlSi18 stainless steel caused by slurry

  Publication

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

  - ENGINEERING FAILURE ANALYSIS - Year 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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• Effect of the welding environment and storage time of electrodes on the diffusible hydrogen content in deposited metal

  Publication

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

  - REVISTA DE METALURGIA - Year 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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• Individual Characteristics and Cognitions of Students with Different Levels of Entrepreneurial Intensity

  Publication

  • P. Ziemiański

  - HORYZONTY WYCHOWANIA - Year 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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• Low Cost Hexacopter Autonomous Platform for Testing and Developing Photogrammetry Technologies and Intelligent Navigation Systems

  Publication

  • P. Burdziakowski

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

  Publication

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

  - IOP Conference Series: Materials Science and Engineering - Year 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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• Testing HIADAC high impedance analyzer in Trento University laboratory on Baunier's RC model using 2 wire probe

  Open Research Data

  open access

  • G. Lentka
  • J. Hoja

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Publication

  • M. Malinowski
  • A. Ambroziak

  - Year 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

  Publication

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

  - Inżynieria Morska i Geotechnika - Year 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

  Publication

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

  - ENVIRONMENTAL POLLUTION - Year 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

  Publication

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

  - DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE - Year 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

  Publication

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

  - Solid State Phenomena - Year 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

  Publication

  • K. Dobrzyński

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

  Open Research Data

  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...

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

  Open Research Data

  open access

  • G. Lentka
  • J. Hoja

  - series: 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

  Open Research Data

  open access

  • G. Lentka
  • J. Hoja

  - series: 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...

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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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

  Open Research Data

  open access

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

  - series: 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...

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

  Publication

  • A. Krasiński
  • M. Wiszniewski

  - Studia Geotechnica et Mechanica - Year 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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• Hydraulic valve design methodology for hydro turbine control system

  Publication

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

  - FLOW MEASUREMENT AND INSTRUMENTATION - Year 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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• Selecting wells for an optimal design of groundwater monitoring network based on monitoring priority map: A Kish Island case study

  Publication

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

  - Water Resources and Industry - Year 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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• Influence of operating pressure on the durability of a satellite hydraulic motor supplied by rapeseed oil

  Publication

  • P. Śliwiński

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

  Publication

  • M. Kowalewski
  • R. Zielonko

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Year 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

  Publication

  • M. Banaszek
  • K. Tesch

  - TASK Quarterly - Year 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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• On degradation of glass/polyester laminate immersed in water

  Publication

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

  - Advances in Materials Science - Year 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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• 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

  Publication

  • P. Puzdrowska

  - Combustion Engines - Year 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

  Publication

  • E. Ciba

  - Polish Maritime Research - Year 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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• Large deformation modelling of CPT probing in soft soil—pore water pressure analysis

  Publication

  • J. Konkol
  • L. Bałachowski

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

  Publication

  • P. Puzdrowska

  - Combustion Engines - Year 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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• Graph Neural Networks and Structural Information on Ionic Liquids: A Cheminformatics Study on Molecular Physicochemical Property Prediction

  Publication

  • K. Baran
  • A. Kloskowski

  - JOURNAL OF PHYSICAL CHEMISTRY B - Year 2023

  Ionic liquids (ILs) provide a promising solution in many industrial applications, such as solvents, absorbents, electrolytes, catalysts, lubricants, and many others. However, due to the enormous variety of their structures, uncovering or designing those with optimal attributes requires expensive and exhaustive simulations and experiments. For these reasons, searching for an efficient theoretical tool for finding the relationship...

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• Self-compacting grout to produce two-stage concrete

  Publication

  • H. Abdelgader
  • K. Wilde
  • A. El-Baden
  • M. Kurpińska
  • F. Omidi Moaf
  • A. M. Rajabi

  - Year 2019

  Traditional concrete (TC) is primarily composed...

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• Green monoterpenes based deep eutectic solvents for effective BTEX absorption from biogas

  Publication

  • P. Makoś-Chełstowska
  • E. Słupek
  • A. Kramarz
  • D. Dobrzyniewski
  • B. Szulczyński
  • J. Gębicki

  - CHEMICAL ENGINEERING RESEARCH & DESIGN - Year 2022

  The combustion of biogas which contains significant amounts of monoaromatic hydrocarbons, i.e. benzene, ethylbenzene, toluene, and xylene (BTEX) can cause many technological, environmental, and health problems. Therefore, in these studies, a new physical absorption method based on deep eutectic solvents (DES) consisting of monoterpenes and carboxylic acids was developed for BTEX removal. A total of 39 DES were synthesized, of which...

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• Mechanical Properties of Additively Manufactured Polymeric Materials—PLA and PETG—For Biomechanical Applications

  Publication

  • R. F. Martins
  • R. Branco
  • M. Martins
  • W. Macek
  • Z. Marciniak
  • R. Silva
  • D. Trindade
  • C. Moura
  • M. Franco
  • C. Malça

  - Polymers - Year 2024

  The study presented herein concerns the mechanical properties of two common polymers for potential biomedical applications, PLA and PETG, processed through fused filament fabrication (FFF)—Material Extrusion (ME). For the uniaxial tension tests carried out, two printing orientations—XY (Horizontal, H) and YZ (Vertical, V)—were considered according to the general principles for part positioning, coordinates, and orientation typically...

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• Perfectly Wetting Mixtures of Surfactants from Renewable Resources: The Interaction and Synergistic Effects on Adsorption and Micellization

  Publication

  • P. Szumała
  • A. Mówińska

  - JOURNAL OF SURFACTANTS AND DETERGENTS - Year 2016

  This paper presents a study of the surface properties of mixtures of surfactants originating from renewable sources, i.e., alkylpolyglucoside (APG), ethoxylated fatty alcohol (AE), and sodium soap (Na soap). The main objective was to optimize the surfactant ratio which produces the highest wetting properties during the analysis of the solution of the individual surfactants, twoand three-component mixtures, and at different pH values....

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• Mechanical behaviour of knit synthetic mesh used in hernia surgery

  Publication

  • A. Tomaszewska

  - Acta of Bioengineering and Biomechanics - Year 2016

  Purpose: There is a discussion in literature concerning mechanical properties and modelling of surgical meshes. An important feature of elastic modulus dependency on load history is taken into account in this paper, as implants are subjected to variable loading during human activity. The example of DynaMesh®-IPOM surgical implant is studied. Methods: The analysis is based on failure tension tests and cyclic loading and unloading...

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• Thermodynamic interpretation and prediction of CO2 solubility in imidazolium ionic liquids based on regular solution theory

  Publication

  • B. Dębski
  • A. Hänel
  • R. Aranowski
  • S. Stolte
  • M. Markiewicz
  • T. Veltzke
  • I. Cichowska-Kopczyńska

  - JOURNAL OF MOLECULAR LIQUIDS - Year 2019

  Regular solution theory (RST) is the most popular model for the interpretation of the interaction between CO2 and ionic liquids. In the present work, the parameters of this model were determined for the CO2 absorption in eleven imidazolium ionic liquids. The y-intercept (A) of the RST model for the investigated imidazolium liquids increases with increasing temperature whereas the slope (B) remains constant. The values of RST parameters...

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• Structure-property relationships in peroxide-assisted blends of poly(ε-caprolactone) and poly(3-hydroxybutyrate)

  Publication

  • M. Przybysz-Romatowska
  • Ł. Zedler
  • M. Saeb
  • K. Formela

  - REACTIVE & FUNCTIONAL POLYMERS - Year 2018

  Poly(ε-caprolactone) and poly(3-hydroxybutyrate) (PCL/PHB) blends in two weight ratios (75/25 and 50/50) were reactively compatibilized in the presence of di-(2-tert-butyl-peroxyisopropyl)-benzene and dicumyl peroxide as free radical initiators. Rheological, mechanical, thermal properties and morphological features, as well as the chemical structure of PCL/PHB blends were investigated. It was found that regardless of PCL/PHB blend...

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

  Publication

  • M. Krajewski
  • P. Iwicki

  - Key Engineering Materials - Year 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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