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Publications (131)
This article presents a study on the metrological properties of smartphone magnetometers and their application in determining the correct shoe size. The research focuses on using magnetometers in smartphones to measure the magnetic field generated by magnetic markers placed inside shoes. To measure foot dimensions, smartphone embedded position sens...
The paper presents the model of stress dependence of 2D relative magnetic permeability of anisotropic, grain-oriented M120‒27s electrical steel suitable for finite element method modeling. The proposed model was developed based on experimental results acquired using the measuring setup with a testing yoke equipped with a Cardan gyroscopic mechanism...
The mutual inductance model enables testing the behavior of power transformers under different operation conditions, especially under the environmental influences on the transformer’s core. This paper presents the investigation results of the stress dependence of the magnetic relative permeability of the power transformer. It was observed that unde...
Measuring nonlinearity (linearity error) in high-resolution electronic balances, including microbalances, is challenging. Today's electronic balances are usually characterized by a small linearity error (with tolerance limits for nonlinearity specified by manufacturers in the order of several elementary divisions), and all criteria for measuring no...
This paper presents a quantitative model for magnetic field sensors based on the Matteucci effect in non-uniform magnetic fields. The Matteucci effect, observed in twisted amorphous wires, generates voltage pulses due to magnetization changes. The model describes non-uniformities by analyzing the effect of spatial gradients in the magnetic field an...
Robotic disassembly of hard disk drives during their recycling process is a promising technology with significant ecological importance and high economic profitability. However, the efficiency of the robotic disassembly of screws in the cost-efficient process using the robotic system in the selective compliance assembly robot arm configuration is h...
Deadweight piston gauges are vital for metrology and calibration, with their effective area traditionally determined through labour-intensive methods or precise geometric measurements. This paper introduces an extended cross-float method that simplifies effective area determination by avoiding detailed equilibrium point adjustments. The proposed me...
Paper presents utilization of Finite Element Method (FEM) for analysis of usefulness of shoe size assessment method, based on magnetovision measurements. Measurement method based on disturbances of the uniform magnetic field (e.g. Earth’s magnetic field) is presented. Disturbances are caused by loose material of high magnetic permeability placed in...
The influence of operation conditions plays a significant role in the functional characteristics of power transformers. The paper presents a new approach for modeling the stress dependence of relative magnetic permeability of grain-oriented electrical steels subjected to the influence of mechanical stresses noncoaxial with the magnetizing field. Th...
This paper presents a newly proposed domain wall energy-based model of the 2D strain dependence of relative magnetic permeability in highly grain-oriented anisotropic electrical steels. The model was verified utilizing grain-oriented M120-27s electrical steel sheet samples with magnetic characteristics measured by an automated experimental setup wi...
The accurate determination of the piston fall rate is one of critical parameters in dead weight testers and piston gauges, as it confirms a quality of machining, instrument accuracy class, and long-term stability. This study introduces a method for determining piston fall rate using two triangulating laser distance sensors. This approach offers ver...
The cell apoptosis pathway of sonodynamic therapy (SDT) is usually blocked, resulting in limited therapeutic efficacy, therefore, the development of new methods for sensitizing targeted ferroptosis and promoting apoptosis is of great significance to improve the anti‐tumor efficacy of SDT. Herein, mesoporous Fe3O4 nanoparticles (NPs) are synthesized...
Measurements of mechanical stress dependence of magnetic properties of electrical steels are significant from both theoretical and application points of view. The paper presents a novel measuring setup for testing the magnetoelastic properties of electrical transformer sheets made of grain-oriented and non-grain-oriented steel. The proposed method...
Although positron emission tomography (PET) imaging products targeting prostate-specific membrane antigen (PSMA) have been approved for marketing, clinical challenges remain in the study of its use as a therapeutic target, such as the complex synthesis process and side effects after treatment. Here, we developed a strategy for targeted photothermal...
A magnetoelastic tensile force sensor, utilizing the magnetoinductive effect (MI), is proposed. The sensor is free of both magnetizing and sensing windings that are found in other solutions described in the literature. An entirely coil-less mechanical construction allows for simplicity of the sensor, while magnetoelastic effects provide a high gaug...
Power conversion devices, such as switching mode power supplies, require the use of a wide range of inductive components. Despite the intense development of advanced magnetic materials for the cores of such elements, SPICE models of these components are still inaccurate and oversimplified. In this paper, a SPICE model of inductive components is use...
Magnetorheological (MR) fluids are classified as smart materials whose viscoplastic characteristics change under the magnetic field. They are widely applied for dynamic energy dissipation due to their rapid thickening under the external magnetic field. In this work, the core-shell suspension of superparamagnetic iron oxide-based nanoparticles was s...
In this paper, the design and investigation of an innovative force sensor, based on the Villari effect, is presented. The sensor was built from electrical steel, in a pressductor pattern, but working in bending load mode. The results of the experimental research allowed for the evaluation of transducer’s performance, mitigation of measurement hyste...
This paper presents a novel finite element method (FEM) of optimization for driving frequency in magneto-mechanical systems using contactless magnetoelastic torque sensors. The optimization technique is based on the generalization of the axial and shear stress dependence of the magnetic permeability tensor. This generalization creates a new possibi...
Modelling the transient simulation of magnetic circuits is the crucial process for development of modern switching mode power converters. Such models are especially important for newly developed magnetic materials, such as amorphous alloys. Paper presents the gyrator-capacitor model of inductive element with core made of high permeability, Co-based...
The article presents the stress impedance investigation of CoFeNiMoBSi alloy in variation of the applied magnetic field. In order to carry out the study, a specialized stand was developed that allows for loading the sample with stresses and simultaneous action of the DC (direct current) magnetizing field. The tests were carried out for as-cast and...
The influence of the concentration of alloying components on thermal stability, magnetic and electrical properties of amorphous alloys of Co73-66Fe4,6-3Cr0-9(B,Si)22-29 system was studied by methods of differential scanning calorimetry, XRD, resistometry and magnetometry. The crystallization of several alloys with advanced magnetic characteristics...
Frame-shaped samples method is commonly used for testing the magnetoelastic characteristics of bulk soft magnetic materials, such as ferrites or steels. However, unusual shape of such samples limits the accuracy of estimation of magnetic path length as well as efficient magnetic cross-section of the samples carried out accordingly to the IEC 60205:...
Non-destructive testing of coating thickness has long been standard practice. Depending on material and geometric properties of base and coating, different measurement methods are applied. The article presents a simple device to measure coating thickness working on a principle of static field magnetic flux gauge. The device has been tested in the r...
This article is about the application of the neon lamp in oscillator circuit to the measurement of high electrical resistance. It has been found that the relationship between the period of the oscillator and the resistance in the circuit is linear to a high degree of accuracy. This linear relation are applied to the measurement of high resistance,...
In this paper a measurement stand for measuring magnetic moment was presented. The technical drawings of the parts made to order and the calibration procedure of the stand has been described, while also obtaining the results of measurements performed to eliminate the errors caused by the inaccuracy of respective parts of the stand. To obtain quanti...
The following article presents the design and analysis of the apparatus used for electronic filter examination. The device consists of voltage-controlled oscillator, which was constructed on the basis of the ICL8038 integrated circuit. The frequency range of the produced sine signal equals to 0,006 Hz ÷ 172 kHz. Moreover, the apparatus contains ATm...
This article refers to the Seebeck effect used in temperature measurement. It shows how to obtain the results, as well as the results of the Seebeck coefficient measurement for commercially available amorphous tapes. The important factors that have a particular influence on the measurement results were also outlined. We also consider the possibilit...
The article is about the design and implementation of a laboratory stand for fluxgate liquid level measurement in a tank. It concentrates on the development of the concept and construction of complete measuring device. The new-created mechanical system was analysed to determine the parameters best describing the physical phenomenon occurring, to un...
This paper presents a process of development, construction, and testing of the system designed to control the thermal relaxation process in liquid metal bath. The task was to use microprocessor-based system to measure and control the heating process in the solder melting pot. This would allow precise control and measurement of temperature in liquid...
The article deals with the issues of formalizing the change of the actual conditions of the operation mode of the production facility. The purpose of the article is to develop a mechanism for identifying these changes based on the analysis of data obtained from the monitoring system the operation mode of the facility. The expediency of using the pa...
This book gathers papers presented at Mechatronics 2019, an international conference held in Warsaw, Poland, from September 16 to 18, 2019. The contributions discuss the numerous, multidisciplinary technological advances in the field of applied mechatronics that the emerging Industry 4.0 has already yielded. Each chapter presents a particular examp...
This paper presents a new method of modeling the influence of mechanical stresses on a magnetic permeability tensor of soft magnetic materials. The proposed method utilizes the principal stresses concept to compensate the influence of shear stresses. As a result, the stress dependence of a magnetic permeability tensor may be assessed with only the...
The results of the investigation on tensile stress dependence of the SAMR (small angle magnetization rotation) signal in soft magnetic amorphous ribbons are presented. Exemplary results for commercially available, negatively magnetostrictive 2705M, 2714A, and 6030D amorphous ribbons show significant stress dependence, in contrast to positively magn...
The results of an investigation on tensile stress dependence of mean Seebeck coefficient in Fe-based amorphous ribbons are presented, constituting a new Seebeck-sigma effect. A measurement test stand, capable of the determination of small variations in thermopower in such materials under stress is described. Exemplary results for commercially avail...
The hysteretic GMI effects observed for low values of magnetizing field are presented, on the example of three different cobalt-based amorphous materials. Hysteresis of GMI is a seldom investigated phenomena, but it is very important from the applications point of view. Simplistic test stand capable of automatic GMI measurement series is briefly de...
This paper is concerned with improving the accuracy of thermoelectric NDT distinguishing between metals and alloys of different composition. While the thermoelectric alloy sorters are known for decades, they generally depend only on thermoelectric voltage differences between samples of different materials, and standard samples for comparisons. In t...
Fluxgate sensors are known for being cheap, robust and sensitive magnetic field sensors. Presented sensor uses Matteucci effect (ME) in its principle of magnetic field sensing, while using harmonic voltage signal extraction typical for fluxgate sensors. In order to increase the sensitivity of used sensor, investigation of high order harmonic of sig...
The paper presents the development of Magnetic Induction Tomography Setup based on eight - coil sensor array which has been designed for further non-destructive research on spatial distribution of electromagnetic parameters of tested elements. The applied method rests on time - varying magnetic field generation from excitation coil, detection of it...
The significant strain dependence of the hysteretic Giant Magnetoimpedance (GMI) effect in a Co67Fe3Cr3B12Si15 amorphous alloy in a low magnetizing field is presented. A simplistic test stand capable of continuous measurements of GMI characteristics under the influence of strain is detailed. Based on the results, a stress-impedance (SI) sensor is p...
The anhysteretic magnetization curve is the key element of modeling magnetic hysteresis loops. Despite the fact that it is intensively exploited, known models of anhysteretic curve have not been verified experimentally. This paper presents the validation of four anhysteretic curve models considering four different materials, including isotropic, su...
The Matteucci effect (ME) is one of the lesser-known magnetomechanical effects and is most prominent in bistable amorphous wires. It has some experimental applications—Matteucci effect-based magnetic field sensors are very easy to produce and have inherently linear, hybrid analog/digital output signal. The effect is still poorly understood, however...
This article is concerned with the localization of ferromagnetic objects on the basis of magnetovision measurement analysis. In the presented case, the concept of localization is understood as the indication of the x, y, and z coordinates of the magnetic moment of the sought object. Magnetovision measurement provides a much simpler, two-dimensional...
The SI (stress-impedance) effect in amorphous ribbons with varying magnetostriction was investigated. Iron- and cobalt-based ribbons with different magnetostriction coefficients were put under tensile stress in a dead weight tester and the impedance change was investigated in function of applied stresses. Significant differences of characteristics...
In this paper an exceptionally simple transducer is presented that is developed for experimental and custom-made sensors with inductive or resistive impedance output. It is based on a venerable 555 Integrated Circuit in a modified astable configuration. Due to single supply 5 V operation, it is directly compatible with most modern microcontroller s...
In this paper new, tensile force sensor is presented, based on Pressductor topology and single layer of ferromagnetic amorphous ribbon. Simplified operating principle of the magnetic core with orthogonal coils is described. Straight and diagonal cut sensors are compared. The load vs. induced voltage characteristics are presented, as well as possibi...
This paper presents a mobile ferrograph system for measurement of magnetic parameters of ultrahigh permeability alloys. The structure of developed system is described, as well as exemplary measurement results of Co67Fe3Cr3B12Si15 alloy used in space applications are presented. © 2018, Industrial Research Institute for Automation and Measurements. A...
Extended Preisach model parameters can be strongly related to microstructural properties of material. It can also include real physical magnetization mechanisms such as domain wall motion and domain rotation. This paper shows that Preisach model is able to anticipate different phases in material structure. Existence of different phases in the mater...
This paper presents investigation results regarding the Jiles-Atherton-based hysteresis loop modeling of ultra-high permeability amorphous alloy MELTA® MM-5Co. The measurement stand is capable of accurately measuring minor and major hysteresis loops for such a material together with exemplary measurement results. The main source of the measurement...
This article is concerned with the methods for experimentally determining the Anhysteretic Magnetization curve for soft magnetic materials. A new method based on the modern hysteresisgraph system is presented. Known modern and traditional methods based on fluxmeters are presented as well. The experimental results obtained with the described methods...
In the paper the design and proof-of-concept of compact digital integrator is presented. The proposed Raspberry Pi-based system works as a four-terminal building block for fluxmeters and magnetoelastic transducers. It is meant to replace the currently used RC integrator circuits, and allows for real-time advanced signal analysis practically elimina...
The paper presents the comparative study of Giant Magneto Impedance (GMI) effect in amorphous ribbons of different composition. In paper fundamental aspects of GMI effect, designed measuring stand and obtained results were described. Ribbons with dimension: 1 mm wide, 50 mm long, 22 µm thick in as-cast state, have been investigated with exciting fr...
DC magnetic field sensor similar to fluxgates utilizing Matteucci Effect was proposed previously. As these types of sensors depend on measuring the second harmonic of the signal, a spectral analysis of Matteucci effect signal was measured. Results indicate that each harmonic is periodical with the increase of DC magnetic field and the period decrea...
Paper presents analysis of sensitivity of parameters of Jiles-Atherton model determined during the optimization process. Recently implemented, differential evolution based method together with two-step optimization process proved, that parameters of Jiles-Atherton model can be determined in reasonable time. However, paper indicates, that in the cas...
The paper presents automatic and modular measurement station for the magnetic materials testing. It allows for measurements of magnetic hysteresis loops under various regimes (sine, triangle or arbitrary magnetizing field, sine or triangle magnetic flux density) and relative permeability curves. The modular nature of the system allows for measureme...
The paper presents the idea of active LR integrator circuit based on ferrite core. The LR topology, in contrast to contemporary RC, allow for drift-free operation of the integrator. Presented circuit is intended as main component of continuous operation fluxmeters and magnetoelastic transducers, especially working with low frequency signals. Critic...
Paper presents utilized innovative setup for eddy current tomography and possibility of its utilization in testing oxide materials such as ferrites. Previously reported tests concerned materials with high conductivity which is the most typical usage of eddy current tests. Described tomography setup is designed for testing axisymmetric objects thus...
The following paper presents the idea of distinguishing ferromagnetic objects based on their magnetic signature. This method is based on the measurement of the magnetic moment of the samples. The developed method could be attractive to the industry due to its simplicity, scalability and low implementation costs. The paper presents detailed descript...
The paper presents utilization of open-source finite element method (FEM) software for modelling of measurement process on eddy current tomography setup. Methodology of measurements is presented, as well as software for forward tomography transformation. Developed software was based entirely on the open-source programs, which results in a high poss...
The paper presents a device for calibrating microforce sensors. The principle of operation of the calibrator is based on the reversed principle of operation of the current balance – the ampere standard. The design of the device is described in detail. During the implementation of the project, minor corrections were made in project, what has been de...
The main objective of this project was the development of fully functional microprocessor controlled thermoelectric ammeter for laboratory and didactic purposes. Device is based on analog thermoammeter transducer, Kamduino platform and thermocouple transducer with cold junction temperature compensation. The main advantage of this unit is direct mea...
Small values of external perturbation forces made it possible to use a torque magnetic drive as a control system. Today, satellite orientation systems use pulsed-type algorithm for discharge of an angular momentum accumulator. The feasibility of using other algorithms (continuous, continuous-pulsed and algorithm of torque magnetic drive operation u...
Current integrator systems usually use active RC integrator circuits. Crucial dificulty associated with this analogue system is the integrator drift. The following paper presents the idea of the active integrator circuit based on inductive and resistive components. This concept allows to eliminate the time drift of the circuit, which is undesired p...
The regularities of the changes of horizontal and sub-horizontal systems of cracks at different locations of Holovyne labradorite deposits are studied. The trend for stress to increase has been established in the quarry LLS “Optima” for Holovyne labradorite deposits in Volodar-Volynsk district, Zhytomyr region at the deepening of excavation. The du...
It is very important to ensure operational reliability of measurement systems. Every shutdown causes loses. The longer diagnostics and repair of the measurement system last, the higher are the loses and they often build up faster the longer the system is not working. The damage can be caused by many things and all of them have to be checked to be a...
Paper presents an automated measuring station for testing of ferromagnetic materials. The system allows for conducting a series of preconfigured measurements in various settings by producing a graphical output of hysteresis loops. Presented system utilises a high resolution U/I converter and a fluxmeter controlled by a PC class computer with Nation...
The application of the existing means for drones detection is rather troublesome due to the miniaturization of board equipment, usage of composite materials and special paint. The possible way to resolve this problem is to combine the technical solution means which function on the basis of physical phenomena and which are crucial for drones detecti...
The paper provides the analyse of three simplified models of hysteresis loop suitable for technical purposes. Models consider the coercive field and utilize linear approximation with saturation, Langevin equation as well as arcus tangent functions. Validation of the models was done on the experimental data from measurements of magnetic hysteresis l...
Heat flow is one of the major technological issues encountered during the design, fabrication and exploitation of almost every element and device. The design process of such an item requires a proper modelling method in order to predict spatial and temporal heat distribution. The most suitable solution to resolving this issue is an open-source soft...
The paper presents a special measurement system for investigation of temperature influence on the indication of commercially available sensors of the magnetic field. Utilizing the developed system, several magnetoresistive and Hall-effect sensors were investigated within the temperature range from −30°C to 70°C. The obtained results indicate that s...