Rok 2024

• Field Calibration of Low-Cost Particulate Matter Sensors Using Artificial Neural Networks and Affine Response Correction

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska
  • M. Wójcikowski
  • B. Pankiewicz

  - MEASUREMENT - Rok 2024

  Due to detrimental effects of atmospheric particulate matter (PM), its accurate monitoring is of paramount importance, especially in densely populated urban areas. However, precise measurement of PM levels requires expensive and sophisticated equipment. Although low-cost alternatives are gaining popularity, their reliability is questionable, attributed to sensitivity to environmental conditions, inherent instability, and manufacturing...

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• Higher harmonics of the intensity modulated Photocurrent/Photovoltage spectroscopy response - a tool for studying photoelectrochemical nonlinearities

  Publikacja

  • A. Olejnik
  • K. Grochowska

  - MEASUREMENT - Rok 2024

  In this work, a higher harmonic analysis (HHA) of the intensity modulated photocurrent/photovoltage (IMPS/IMVS) spectroscopy data is proposed as a potent tool for studying nonlinear phenomena in photoelectrochemical and photovoltaic systems. Analytical solutions of kinetic equations were constructed for cases of single and double resonance accounting for various sources of higher harmonics. These sources correspond to the physical...

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• The influence of the geographic positioning system error on the quality of ship magnetic signature reproduction based on measurements in sea conditions

  Publikacja

  • J. Tarnawski
  • K. Buszman
  • M. Wołoszyn
  • B. Puchalski

  - MEASUREMENT - Rok 2024

  In previous studies, the authors performed the magnetic signature reconstruction of the marine ship Zodiak as part of the measurement campaign focused on recording magnetic data and the relative position of a ship during its passage over a magnetometer immersed on the testing ground. A high degree of representation of the magnetic signature was obtained. However, the recorded measurement data revealed new patterns of the multidipole model...

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• Towards hand grip force assessment by using EMG estimators

  Publikacja

  • R. Barański
  • W. Wojnicz
  • B. Zagrodny
  • M. Ludwicki
  • A. Sobierajska-Rek

  - MEASUREMENT - Rok 2024

  The purpose of this study was to propose a method to assess individual regression (calibration) curves to establish a relationship between an isometric grip force and surface electromyography (EMG) estimator. In this study 18 healthy volunteers (12 male (23.0 ± 2.0 years) and 6 female (23.2 ± 0.7 years)) had been examined. Ten EMG estimators (mean absolute value, root mean square, entropy, energy, turns per second, mean of zero...

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Rok 2023

• Electro-optical transducer based on indium-tin-oxide-coated optical fiber for analysis of ionized media

  Publikacja

  • P. Sezemsky
  • M. Koba
  • P. Curda
  • R. Bogdanowicz
  • V. Stranak
  • M. Śmietana

  - MEASUREMENT - Rok 2023

  The paper introduces a concept of an optical fiber based electro-optical transducer for monitoring of ionized media, such as low-temperature plasma. It utilizes optical fiber with a section of a core coated with tailored indium tin oxide (ITO) thin film and thus combines the optical phenomena of lossy-mode resonance (LMR) with the electrostatic probe. ITO is an optically transparent and electrically conductive material and if its...

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• Filter-Hilbert Method for Automatic Correction of Non-Anechoic Antenna Measurements with Embedded Self-Calibration Mechanism

  Publikacja

  • A. Bekasiewicz
  • V. Waladi

  - MEASUREMENT - Rok 2023

  One of the most important steps in the process of antenna development involves measurements of its prototype. Far-field performance of radiators is normally characterized in strictly controlled environments such as anechoic chambers which can ensure certification-grade accuracy. Unfortunately, they are also characterized by high construction costs which might not be justified for low-budget research and/or teaching-related activities....

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• Frequency measurement research with weight averaging of pulse output signal of voltage-to-frequency converter

  Publikacja

  • M. Dorozhovets
  • E. Pawłowski
  • D. Świsulski

  - MEASUREMENT - Rok 2023

  The paper presents the essence and investigation of the efficiency of weight averaging of a pulse output signal of voltage-to-frequency converter. The effect of counting and the influence of interference on the result of weight averaging of frequency modulated pulses are analyzed. It is shown that from the point of view of counting error reduction, the best are polynomial weight functions. In the case of high interferences whose...

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• Matrix Strengthening the Identification of Observations with Split Functional Models in the Squared Msplit(q) Estimation Process

  Publikacja

  • M. Zienkiewicz
  • P. S. Dąbrowski

  - MEASUREMENT - Rok 2023

  This article addresses the issue of raising the level of identification of observations with either single or more split functional models in the squared Msplit(q) estimation process. The theoretical part of the study presents the theoretical grounds for the classical method for estimating parameters in a split functional model and proposes a modification of the computational algorithm to increase the quality of the determinations...

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• Method for determining of shallow water depths based on data recorded by UAV/USV vehicles and processed using the SVR algorithm

  Publikacja

  • M. Specht
  • B. Szostak
  • O. Lewicka
  • A. Stateczny
  • C. Specht

  - MEASUREMENT - Rok 2023

  Bathymetric measurements in waters shallower than 1 m are necessary to monitor seafloor relief changes in the coastal zone. This is especially important for ensuring the safety of navigation, navigation efficiency, as well as during the design and monitoring of hydrotechnical structures. Therefore, the aim of this article is to present a method for determining of shallow water depths based on data recorded by Unmanned Aerial Vehicle...

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• Methodology for Performing Bathymetric Measurements of Shallow Waterbodies Using an UAV, and their Processing Based on the SVR Algorithm

  Publikacja

  • B. Szostak
  • M. Specht
  • P. Burdziakowski
  • A. Stateczny
  • C. Specht
  • O. Lewicka

  - MEASUREMENT - Rok 2023

  State-of-art methods of bathymetric measurements for shallow waterbodies use Global Navigation Satellite System (GNSS) receiver, bathymetric Light Detection and Ranging (LiDAR) sensor or satellite imagery. Currently, photogrammetric methods with the application of Unmanned Aerial Vehicles (UAV) are gathering great importance. This publication aims to present step-by-step methodology for carrying out the bathymetric measurements...

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• Methodology for Performing Bathymetric Measurements of Shallow Waterbodies Using an UAV, and their Processing Based on the SVR Algorithm

  Publikacja

  • B. Szostak
  • M. Specht
  • P. Burdziakowski
  • A. Stateczny
  • C. Specht
  • O. Lewicka

  - MEASUREMENT - Rok 2023

  State-of-art methods of bathymetric measurements for shallow waterbodies use Global Navigation Satellite System (GNSS) receiver, bathymetric Light Detection and Ranging (LiDAR) sensor or satellite imagery. Currently, photogrammetric methods with the application of Unmanned Aerial Vehicles (UAV) are gathering great importance. This publication aims to present step-by-step methodology for carrying out the bathymetric measurements...

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• Multisine impedimetric monitoring with an in-depth distribution of relaxation times analysis of WE43 and AZ31 magnesium alloys corrosion

  Publikacja

  • M. Osipenko
  • J. Karczewski
  • M. Dominów
  • M. Prześniak-Welenc
  • I. Makarava
  • I. Kurilo
  • D. Kharitonov
  • J. Ryl

  - MEASUREMENT - Rok 2023

  This research aims to develop and utilize an impedance-based tool for monitoring non-stationary electrochemical processes, coupling the multisinusoidal perturbation signal approach and distribution of relaxation times (DRT) analysis for the first time. The approach was used to distinguish independent processes occurring at the surface of AZ31 and WE43 Mg alloys undergoing corrosion in Hank’s Balanced Salt Solution at 37 °C. We...

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• Municipal wastewater reclamation: Reclaimed water for hydrogen production by electrolysis – A case study

  Publikacja

  • P. Zawadzki
  • B. Kończak
  • A. Smoliński

  - MEASUREMENT - Rok 2023

  This paper presents an analysis of a treatment system selection for municipal wastewater stream based on the DuPont Water Solutions WAVE software. The results obtained based on an analysis of 7 different processing cases studies (ultrafiltration and reverse osmosis) confirmed that the application of 2-pass membrane systems enables the reclamation of water from municipal wastewater that fulfills the requirements concerning the...

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• Roughness evaluation of turned composite surfaces by analysis of the shape of Autocorrelation Function

  Publikacja

  • P. Podulka
  • W. Macek
  • B. Zima
  • G. Lesiuk
  • R. Branco
  • G. Królczyk

  - MEASUREMENT - Rok 2023

  In this paper, the application of an Autocorrelation Function for the characterisation of surface topography was validated. The roughness evaluation of turned composite surfaces was supported by sophisticated studies of the Autocorrelation Function properties, considering especially the shape of the function. Details were measured with the optical method. The selection of the surface roughness evaluation procedures was carried...

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• Shaking table experimental study on models of steel buildings with different types of joints

  Publikacja

  • T. Jaroszewski
  • M. Miari
  • T. Falborski
  • R. Jankowski

  - MEASUREMENT - Rok 2023

  The aim of this paper is to study the response of models of steel buildings with destroyed and non-destroyed joints. The study was conducted experimentally using the shaking table tests. Two steel models were considered. Several types of joints were taken into account: totally destroyed joints, partially destroyed joints, welded joints and joints stiffened with additional metal. Six ground motions were taken into account. The acceleration...

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• The correlation of fractal dimension to fracture surface slope for fatigue crack initiation analysis under bending-torsion loading in high-strength steels

  Publikacja

  • W. Macek
  • R. Branco
  • P. Podulka
  • R. Masoudi Nejad
  • J. D. Costa
  • J. A. M. Ferreira
  • C. Capela

  - MEASUREMENT - Rok 2023

  In this study, the fractal dimension of fatigue fracture surfaces is investigated in order to find an alternative failure loading indicator. Some of many metrological factors are generalized by reducing the fracture surface structure to one factor and develop an entire fracture surface procedure by analyzing the impact of surface slope and calculation resolution. Three notched geometries are studied under cyclic bending-torsion:...

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• Time-Gating method with automatic calibration for accurate measurements of electrically small antenna radiation patterns in Non-Anechoic environments

  Publikacja

  • A. Bekasiewicz
  • S. Kozieł
  • M. Czyż

  - MEASUREMENT - Rok 2023

  Non-anechoic sites represent a cheap alternative to measurements of antennas in dedicated facilities. However, due to a high noise—from the external EM signal sources and multipath interferences—the quality of radiation patterns obtained in non-anechoic conditions is poor. The characteristics can be corrected using a time-gating method (TGM), which involves filtering of the noise based on temporal analysis of the measured signals....

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• Topography measurement methods evaluation for entire bending-fatigued fracture surfaces of specimens obtained by explosive welding

  Publikacja

  • P. Podulka
  • W. Macek
  • D. Rozumek
  • K. Żak
  • R. Branco

  - MEASUREMENT - Rok 2023

  In this paper, the methods of compensation of differences in the results of entire bending-fatigued fracture surface topographies were presented. The roughness evaluation was performed with a focus variation microscope and confocal surface topography measurement techniques. The differences in the ISO 25178 roughness parameters were investigated and procedures for their compensation were studied. It was found that various types...

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• Uncertainty Quantification of Additive Manufacturing Post-Fabrication Tuning of Resonator-Based Microwave Sensors

  Publikacja

  • S. Kozieł
  • T. Haq Ul

  - MEASUREMENT - Rok 2023

  Reconfigurability, especially in terms of the ability of adjusting the operating frequency, has become an important prerequisite in the design of modern microwave components and systems. It is also pertinent to microwave sensors developed for a variety of applications such as characterization of material properties of solids or liquids. This paper discusses uncertainty quantification of additive-manufacturing-based post-fabrication...

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Rok 2022

• A model of the response of the MGS-6 gravity sensor to tilting

  Publikacja

  • K. Pyrchla
  • M. Pająk
  • J. Gołyga
  • J. Pyrchla

  - MEASUREMENT - Rok 2022

  The reliable interpretation of the measurements made by the Micro-g marine gravimetric system (MGS-6) depends on how the temporary changes of the scale coefficients such as gravimeter scale factor, vertical cross-coupling (VCC) effect, tiltmeter cross and tiltmeter long are compensated for during the signal analysis. The listed coefficients cannot be determined from readings during the measurements or by analysing the final data....

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• A numerical and experimental analysis of multi-hole orifice in turbulent flow

  Publikacja

  • A. Golijanek-Jędrzejczyk
  • A. Mrowiec
  • S. Kleszcz
  • R. Hanus
  • M. Zych
  • M. Jaszczur

  - MEASUREMENT - Rok 2022

  In this research study, the comprehensive metrological analysis is investigated for a 4-hole orifice with module m = 0.25 installed in the pipeline with an internal diameter of 50 mm. A detailed numerical simulation was performed for the turbulence models: k-ε-realizable and k-ω-BSL. The novelties of the research include model validation by comparing the results of numerical studies with the experiment conducted in the area of...

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• A Surrogate-Assisted Measurement Correction Method for Accurate and Low-Cost Monitoring of Particulate Matter Pollutants

  Publikacja

  • M. Wójcikowski
  • B. Pankiewicz
  • A. Bekasiewicz
  • T. Cao
  • J. Lepioufle
  • I. Vallejo
  • R. Odegard
  • H. Phuong Ha

  - MEASUREMENT - Rok 2022

  Air pollution involves multiple health and economic challenges. Its accurate and low-cost monitoring is important for developing services dedicated to reduce the exposure of living beings to the pollution. Particulate matter (PM) measurement sensors belong to the key components that support operation of these systems. In this work, a modular, mobile Internet of Things sensor for PM measurements has been proposed. Due to a limited...

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• Analysis of exhaled breath for dengue disease detection by low-cost electronic nose system

  Publikacja

  • J. Smulko
  • T. Chludziński
  • T. Majchrzak
  • A. Kwiatkowski
  • S. Borys
  • A. Lisset Jaimes-Mogollón
  • C. Manuel Durán-Acevedo
  • O. Geovanny Perez-Ortiz
  • R. Ionescu

  - MEASUREMENT - Rok 2022

  This paper presents a procedure and a set-up of an electronic nose system analyzing exhaled breath to detect the patients suffering from dengue – a mosquito-borne tropical disease. Low-power resistive gas sensors (MiCS-6814, TGS8100) were used to detect volatile organic compounds (VOCs) in the exhaled breath. The end-tidal phase of patients exhaled breath was collected with a BioVOCTM breath sampler. Two strategies were assessed...

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• Compressible gas density measurement by means of Fourier analysis of interferograms

  Publikacja

  • J. Telega
  • R. Szwaba
  • M. Śmiałek-Telega

  - MEASUREMENT - Rok 2022

  This paper describes a method for nonintrusive compressible gas density measurement by means of automated analysis of interferograms using FFT (Fast Fourier Transform), and its implementation using DFT (Discrete Fourier Transform), that does make this measurement technique a fairly valuable and accessible experimental method. The presented approach makes it possible to use the finite fringe setting of the interferometer, thus reducing...

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• Determination of stepped plate thickness distribution using guided waves and compressed sensing approach

  Publikacja

  • B. Zima

  - MEASUREMENT - Rok 2022

  Guided waves recently have attracted significant interest as a very promising research area. The signals registered by a specially designed sensor network are processed to assess the state of the tested structure. Despite the constant development of novel damage detection algorithms employing guided waves, the phenomenon of wave propagation still needs detailed recognizing and understanding for the further progress of non-destructive...

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• Diamond protection for reusable ZnO coated fiber-optic measurement head in optoelectrochemical investigation of bisphenol A

  Publikacja

  • M. Szczerska
  • M. Kosowska
  • P. Listewnik
  • M. Rycewicz
  • M. Bechelany
  • Y. Fleger
  • D. Fixler
  • P. Jakóbczyk

  - MEASUREMENT - Rok 2022

  Due to the global problem with plastic contaminating the environment, with bisphenol A (BPA) being one of the highest demand, effective monitoring and purification of the pollutants are required. The electrochemical methods constitute a good solution but, due to polymerization of electrochemical oxidation bisphenol A products and their adsorption to the surfaces, measurement head elements are clogged by the formed film. In this...

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• Electronic nose algorithm design using classical system identification for odour intensity detection

  Publikacja

  • T. Zubowicz
  • K. Armiński
  • B. Szulczyński
  • J. Gębicki

  - MEASUREMENT - Rok 2022

  The two elements considered crucial for constructing an efficient environmental odour intensity monitoring systems are sensors and algorithms typically addressed to as electronic nose sensor (e-nose). Due to operational complexity of biochemical sensors developed in human bodies algorithms based on computational methods of artificial intelligence are typically considered superior to classical model based approaches in development...

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• Focused ion beam-based microfabrication of boron-doped diamond single-crystal tip cantilevers for electrical and mechanical scanning probe microscopy

  Publikacja

  • E. Gacka
  • P. Kunicki
  • A. Sikora
  • R. Bogdanowicz
  • M. Ficek
  • T. Gotszalk
  • I. W. Rangelow
  • K. Kwoka

  - MEASUREMENT - Rok 2022

  In this paper, the fabrication process and electromechanical properties of novel atomic force microscopy probes utilising single-crystal boron-doped diamond are presented. The developed probes integrate scanning tips made of chemical vapour deposition-grown, freestanding diamond foil. The fabrication procedure was performed using nanomanipulation techniques combined with scanning electron microscopy and focused ion beam technologies....

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• Identification of Unstable Reference Points and Estimation of Displacements Using Squared Msplit Estimation

  Publikacja

  • M. Zienkiewicz

  - MEASUREMENT - Rok 2022

  The article presents a new version of the method for estimating parameters in a split functional model, which enables the determination of displacements of geodetic network points with constrained datum. The main aim of the study is to present theoretical foundations of Msplit CD estimation and its basic properties and possible applications. Particular attention was paid to the efficacy of the method in the context of geodetic...

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• Impact of cross-section centers estimation on the accuracy of the Point cloud spatial expansion using robust M-estimation and Monte Carlo simulation

  Publikacja

  • P. Dąbrowski
  • M. Zienkiewicz

  - MEASUREMENT - Rok 2022

  The point cloud spatial expansion (PCSE) method creates an alternative form of representing the shape of symmetrical objects and introduces additional descriptive geometric parameters. An important element of the procedure is determining the course of the axis of symmetry of cylindrical objects based on cross-sections of point clouds. Outliers occurring in laser measurements are of great importance in this case. In this study,...

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• Internal imaging of concrete fracture based on elastic waves and ultrasound computed tomography

  Publikacja

  • M. Zielińska
  • M. Rucka

  - MEASUREMENT - Rok 2022

  The condition assessment of concrete structures belongs to the greatest challenges of non-destructive testing. Monitoring the fracture process of concrete and detecting cracks at the earliest possible stage is a vital aspect to ensure the safety of civil engineering objects. The use of ultrasound tomography enables imaging the internal structure of a tested element. This study aims at the visualization of fracture damage in concrete...

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• Measurement method for capacitive sensors for microcontrollers based on a phase shifter

  Publikacja

  • Z. Czaja

  - MEASUREMENT - Rok 2022

  A complete measurement method dedicated to capacitive sensors has been developed. It includes the development of hardware (an analogue interface circuit for microcontrollers with built-in times/counters and analogue comparators) and software (a measurement procedure and a systematic error calibration (correction) algorithm which is based on a calibration dictionary). The interface circuit consists of a low-pass filter and a phase...

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• Reliability of acicular grindable thermocouples for transient temperature measurements at sliding contacts

  Publikacja

  • O. Nosko
  • Y. Tsybrii
  • W. Tarasiuk
  • A. Nosko

  - MEASUREMENT - Rok 2022

  Acicular grindable thermocouples represent an interesting and prospective technique of temperature measurements at sliding contacts. This study aimed at the investigation of their reliability and accuracy as applied to the friction materials of various classes in contact with steel. The tests were conducted on a pin-on-disc tribometer under stationary and transient regimes. The experimental results were validated by comparing the...

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Rok 2021

• A measurement method for lossy capacitive relative humidity sensors based on a direct sensor-to-microcontroller interface circuit

  Publikacja

  • Z. Czaja

  - MEASUREMENT - Rok 2021

  A new time-domain measurement method for determining the capacitance and resistance values of lossy relative humidity capacitive sensors is presented. The method is based on a direct sensor-to-microcontroller interface for microcontrollers with internal analog comparators and timers. The interface circuit consists only of four reference resistors (two reference resistors if a microcontroller includes a voltage reference source),...

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• Baseline-free debonding detection in reinforced concrete structures by elastic wave propagation

  Publikacja

  • B. Zima
  • R. Kędra

  - MEASUREMENT - Rok 2021

  The article presents the results of the numerical and experimental analysis concerning wave propagation in reinforced concrete (RC) beams with various extent of debonding between the steel rod and concrete cover. The main aim of the paper was to consider the unsolved research gaps, which considerably limit the application of wave-based methods in practice. The propagation of the flexural wave modes excited and registered on the...

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• Current divider-based nanosecond high current pulse measuring systems

  Publikacja

  • M. Nowak
  • K. Jakubiuk
  • D. Kowalak
  • M. Pikoń
  • J. Czucha
  • J. Starzyński

  - MEASUREMENT - Rok 2021

  This paper presents the analysis of the new approach to the measurement methodology of significant values (in order of hundreds of kA) and huge steepness (in order of MA/μs) current pulses based on current dividers along with a comparison of the various types transducers suitability in measuring systems with such extreme parameters. Such dividers are used to extend the measurement ranges of current transducers with limited current...

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• Damage detection in plates based on Lamb wavefront shape reconstruction

  Publikacja

  • B. Zima

  - MEASUREMENT - Rok 2021

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

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• Exploring multi-step glucose oxidation kinetics at GOx-functionalized nanotextured gold surfaces with differential impedimetric technique

  Publikacja

  • W. Lipińska
  • J. Ryl
  • P. Ślepski
  • K. Siuzdak
  • K. Grochowska

  - MEASUREMENT - Rok 2021

  For a few past years, we can observe the enormous growth of investigations related to ultrasensitive electrochemical sensors capable of reliable determination of important body parameters and analytes. Utilized procedures rely on standard electrochemical methods, demanding electrode polarization, and information about the initial characteristics of the working electrode. More and more complex electrode materials are characterized...

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• Fractal dimension for bending–torsion fatigue fracture characterisation

  Publikacja

  • W. Macek
  • R. Branco
  • M. Korpyś
  • T. Łagoda

  - MEASUREMENT - Rok 2021

  Fracture surfaces after biaxial fatigue tests were compared using fractal dimension for three types of metallic materials in smooth and notched specimens made of S355J2 and 10HNAP steels and 2017-T4 aluminium alloy, considering both proportional and nonproportional cyclic loading. High-resolution optical 3D measurement studies were performed on the entire fracture surface. A direct correlation between fractal dimension and fatigue...

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• Innovative mobile method to determine railway track axis position in global coordinate system using position measurements performed with GNSS and fixed base of the measuring vehicle

  Publikacja

  • A. Wilk
  • W. Koc
  • C. Specht
  • J. Skibicki
  • S. Judek
  • K. Karwowski
  • P. Chrostowski
  • J. Szmagliński
  • P. Dąbrowski
  • K. Czaplewski... i 3 innych

  - MEASUREMENT - Rok 2021

  The shape of the railway track axis and its position in the global coordinate system are essential when defining design parameters of the railway. Correct reconstruction of these quantities is vital for both verifying the compliance of real track parameters with the design and for diagnosing, as all track deformations can also be defined as deviations of real parameters from their design values. The measurements of quantities related...

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• Measurement Campaign and Mathematical Model Construction for the Ship Zodiak Magnetic Signature Reproduction

  Publikacja

  • J. Tarnawski
  • K. Buszman
  • M. Wołoszyn
  • T. A. Rutkowski (dawniej: T. Rutkowski)
  • A. Cichocki
  • R. Józwiak

  - MEASUREMENT - Rok 2021

  The paper presents the partial work done within the framework of the EDA Siramis II project focused on magnetic signature reproduction of ships. Reproduction is understood here as the ability to determine the magnetic anomaly of the local Earth magnetic field in any direction and at any measurement depth due to the presence of the analysed object. The B-91 type hydrographic ship Zodiak was selected as the real case study. The work...

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• Novel fast non-linear electrochemical impedance method for corrosion investigations

  Publikacja

  • P. Ślepski
  • M. Szociński
  • G. Lentka
  • K. Darowicki

  - MEASUREMENT - Rok 2021

  The paper presents a novel approach to corrosion rate monitoring using non-linear electrochemical impedance spectroscopy. The authors propose a new variant of non-linear impedance measurement using amplitude-modulated multi-frequency ac perturbation signal. It allows shortening of measurement duration so it is possible to monitor corrosion rate of the systems experiencing rapid changes. In this way a limitation resulting from lack...

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• Optical flow method for measuring deformation of soil specimen subjected to torsional shearing

  Publikacja

  • P. Srokosz
  • M. Bujko
  • M. Bocheńska
  • R. Ossowski

  - MEASUREMENT - Rok 2021

  In this study optical flow method was used for soil small deformation measurement in laboratory tests. The main objective was to observe how the deformation distributes along the whole height of cylindrical soil specimen subjected to torsional shearing (TS test). The experiments were conducted on dry non-cohesive soil specimens under two values of isotropic pressure. Specimens were loaded with low-amplitude cyclic torque to analyze...

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• Performance of acicular grindable thermocouples for temperature measurements at sliding contacts

  Publikacja

  • O. Nosko
  • W. Tarasiuk
  • Y. Tsybrii
  • A. Nosko
  • A. Senatore
  • V. D'Urso

  - MEASUREMENT - Rok 2021

  The present study investigates the performance of acicular grindable thermocouples based on a constantan wire / steel hollow cylinder construction. The experiments showed that the measuring junction electrical resistance, temperature–voltage characteristic, measuring junction rise time and signal noise standard deviation of the acicular thermocouples are comparable to those of conventional J-type thermocouples with bare wire diameter...

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• The assessment of metrological properties of segmental orifice based on simulations and experiments

  Publikacja

  • A. Golijanek-Jędrzejczyk
  • A. Mrowiec
  • R. Hanus
  • M. Zych
  • M. Heronimczak
  • D. Świsulski

  - MEASUREMENT - Rok 2021

  Segmental orifices are often used to measure flows of heterogeneous mixtures, especially in flow meters in the power industry, for example. The orifice (with module m= 0.25) was installed in a stainless-steel pipe with internal diameter of 50 mm, placed in a hydraulic water system. The research was performed for Reynolds numbers ranging from 9,000 to 17,000. The flow characteristics of this orifice obtained based on simulation...

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Rok 2020

• A measurement method for capacitive sensors based on a versatile direct sensor-to-microcontroller interface circuit

  Publikacja

  • Z. Czaja

  - MEASUREMENT - Rok 2020

  In the paper, there is presented a new time-domain measurement method for determining the capacitance values of capacitive sensors, dedicated, among others, to capacitive relative humidity sensors. The method is based on a versatile direct sensor-to-microcontroller interface for microcontrollers with internal analog comparators (ACs) and with precision voltage reference sources, e.g. digital-to-analog converters (DACs). The reference...

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• Fast-response optoelectronic detection of explosives’ residues from the nitroaromatic compounds detonation: field studies approach

  Publikacja

  • J. Wojtas
  • R. Bogdanowicz
  • A. Kamieńska-Duda
  • B. Pietrzyk
  • M. Sobaszek
  • P. Prasuła
  • A. D. Dettlaff (dawniej: A. Dettlaff)
  • K. Achtenberg

  - MEASUREMENT - Rok 2020

  We are presenting an application of optoelectronic nitrogen dioxide (NO2) analyzer based on cavity enhanced absorption spectroscopy in the detection of traces of explosives after detonation. It has been shown that the analyzer using blue-violet laser is able to detect explosive residues after the detonation of various amounts of nitroaromatic compounds (75g-1kg) with higher efficiency than the HPLC soil sample testing equipment,...

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• Interpolation methods in GPR tomographic imaging of linear and volume anomalies for cultural heritage diagnostics

  Publikacja

  • M. Rucka
  • E. Wojtczak
  • M. Zielińska

  - MEASUREMENT - Rok 2020

  This paper presents results of a ground penetrating radar (GPR) survey conducted in St. Joseph’s Church in Gdańsk, Poland. The aim of the study was to produce tomographic imaging of a renovated floor as well as the objects buried under the floor to detect linear and volume inclusions. The assumed track spacing was meaningfully greater than the single signal spacing in each track, which induced the need for interpolation methods...

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• Uncertainty of mass flow measurement using centric and eccentric orifice for Reynolds number in the range 10,000 ≤ Re ≤ 20,000

  Publikacja

  • A. Golijanek-Jędrzejczyk
  • A. Mrowiec
  • R. Hanus
  • M. Zych
  • D. Świsulski

  - MEASUREMENT - Rok 2020

  The article analyses the impact of the Reynolds number on the estimated uncertainty of the mass flow rate measurement using an orifice plate. The objects of the research were two types of orifices: centric (ISA) and eccentric, with the diameter ratio β = 0.5. Studies were performed by Monte Carlo simulation and experiments for Reynolds numbers in the range 10,000 ≤ Re ≤ 20,000. The obtained results have shown that for both orifice...

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Rok 2019

• Analysis of compressive forces in CFGFT cylindrical pillars and their coatings using laboratory tests and metric spaces

  Publikacja

  • M. Abramski
  • E. Mieloszyk
  • A. Milewska

  - MEASUREMENT - Rok 2019

  The article discusses compressive forces tests in composite-concrete pillars with the use of laboratory active experiment including the factors and properties of materials which have a significant impact on the test results and their repeatability. A polymer composite based on glass fiber reinforced resin with different fiber beam angles (20, 55 and 85) was used as a buffer/coat of the pole. Due to the problems with direct comparison...

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