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1
Content available remote

The Influence of Compressive Stresses on the Properties of Inductive Electronics Components

100%
Salach J., Nowak P.
Acta Physica Polonica A
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2018
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vol. 133
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issue 4
1053-1055
EN
This paper presents results of investigation of stress influence on magnetic characteristics of ferrite ring cores for inductive electronics components. Ring-shaped cores were made of Ni-Zn ferrite designed for anti-lung filter cores. The results of the study indicate a significant impact of external forces stresses on the magnetic properties of ferrite cores. Such changes are very important due to their influence on the correct operation of the induction components.
2
Content available remote

High Resolution Eddy Current Tomography System for Nondestructive Testing

100%
Salach J., Szewczyk R.
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vol. 126
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issue 1
402-403
EN
Idea of the high-resolution eddy current tomography is presented. Proposed system gives possibility of testing cylinder-shaped elements made of both magnetic and non-magnetic materials. To validate the concept, the tomographic measurements are carried out on set of steel cylinders with non-magnetic copper inclusion. Measurements were done during both linear and rotational movement of the element. Achieved results indicate the high sensitivity of system, which creates possibility of its application for non-destructive testing of the elements made of ferromagnetic and non-magnetic materials.
3
Content available remote

The Magnetoelastic Characteristics of Fe_{70}Ni_8Si_{10}B_{12} Amorphous Alloy Subjected to Thermo-Magnetic Treatment

81%
Bieńkowski A., Salach J., Szewczyk R., Kolano R.
Acta Physica Polonica A
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2008
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vol. 113
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issue 1
87-90
EN
This paper presents the experimental results of the magnetic and magnetoelastic investigation on the properties of Fe_{70}Ni_8Si_{10}B_{12} amorphous alloy, subjected to thermo-magnetic treatment. Samples were annealed at temperature 350°C for 1 hour, in parallel magnetic field (4 kA/m), as well as in transverse field (350 kA/m). Sample annealed without magnetic field was also tested. Magnetoelastic tests were performed under uniform compressive stress, applied to the ring-shaped core, perpendicularly to the direction of magnetizing field. The results indicated that the thermo-magnetic heat treatment changes the magnetic characteristics, but does not have a significant influence on the coarse of magnetoelastic characteristics of Fe_{70}Ni_8Si_{10}B_{12} amorphous alloy.
4
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Magnetic Fluxgate Sensor Characteristics Modeling Using Extended Preisach Model

81%
Frydrych P., Szewczyk R., Salach J.
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vol. 126
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issue 1
18-19
EN
This paper presents the implementation of the extended Preisach model for fluxgate sensor characteristics modeling. The developed model enables the optimization of fluxgate sensor parameters for a given core material. Model consists of two parts. The first one describes magnetic characteristics of the core, while the second part calculates output signal according to sensor dimensions and electric circuit parameters. The model is easy to adapt for modeling of other devices with magnetic cores. It can be used instead of costly and time consuming prototype testing.
5
Content available remote

Influence of Temperature on Magnetostrictive Delay Line Properties

81%
Salach J., Charubin T., Nowak P., Jackiewicz D.
Acta Physica Polonica A
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2017
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vol. 131
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issue 4
1183-1185
EN
This paper presents results of tests performed on magnetostrictive delay line concerning its change in properties during temperature changes. Results indicate that an increase in temperature causes a decrease in wave amplitude and increase in the speed of propagation. The material used for the magnetostrictive delay line was an amorphous steel alloy of Fe-Si-B in tape form.
6
Content available remote

Magnetoelastic Properties of Hitperm-Type Alloys from Torque Moment

81%
Salach J., Bieńkowski A., Szewczyk R.
Acta Physica Polonica A
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2008
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vol. 113
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issue 1
115-118
EN
The following paper presents the results of the investigation on the influence of the torque on the magnetic characteristics of the Hitperm-type Fe_{41.5}Co_{41.5}Cu_1Nb_3B_{13} alloy, in as-quenched and nanocrystalline state. The methodology of application of the torque to the ring-shaped core is also described. This methodology gives a possibility of achieving uniform shearing stresses in the core. The results indicate that shearing stress sensitivity of Hitperm-type alloys depends on the annealing and nanocrystallization process. This effect should be considered during the development of magnetoelastic torque sensors.
7
Content available remote

Industrial Application of Magnetoelastic Force and Torque Sensors

81%
Bieńkowski A., Szewczyk R., Salach J.
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issue 5
1008-1009
EN
Due to their sensitivity, robustness and the flat shape, the magnetoelastic sensors create new possibilities of industrial applications. This paper presents the results of the field tests of using the magnetoelastic sensors with amorphous alloy ring-shaped cores for ignition detection in locomotive's diesel engines as well as measurements of the torque during the operation of ball valves. Presented results confirm usability of amorphous alloy based, magnetoelastic sensors for specific industrial applications.
8
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Magnetoelastic Villari Effect in Ferrite Materials for Force and Stress Sensors Working in Low Magnetizing Field Region

81%
Kachniarz M., Bieńkowski A., Salach J., Szewczyk R.
Acta Physica Polonica A
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2018
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vol. 133
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issue 4
1056-1059
EN
The following paper presents the original results of investigation on the magnetoelastic properties of ferrite materials magnetized in low field region, which could be utilized in development of force and stress sensors. The objects of investigation were two ferrite materials (manganese-zinc Mn-Zn and nickel-zinc Ni-Zn). The magnetoelastic characteristics of the materials were investigated with the special measurement system, allowing measurement of magnetic parameters of the ferrite materials magnetized with low fields under the influence of the compressive stress. The obtained results indicate that there is a strong correlation between the magnetic properties of the material in low magnetizing field region, and applied mechanical stress, which allows development of the magnetoelastic stress or force sensor with ferrite core working in low magnetizing field region.
9
Content available remote

Application of Extended Jiles-Atherton Model for Modelling the Influence of Stresses on Magnetic Characteristics of the Construction Steel

81%
Jackiewicz D., Szewczyk R., Salach J., Bieńkowski A.
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vol. 126
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issue 1
392-393
EN
Paper presents the possibility of application of the Jiles-Atherton extended model to describe the magnetic characteristics of construction steel C45 under the influence of tensile stresses. Experiment was performed on the frame-shaped samples. Then, the influence of stresses on hysteresis loops was modelled with the Jiles-Atherton extended model. The obtained results of the modelling are consistent with results of the experimental measurements. The results of modelling create new possibilities of explanation of the physical phenomena connected with magnetisation of the magnetic materials under stresses, which is esential for the assessment of the state of the construction steel during its exploitation in industrial conditions.
10
Content available remote

New Method of Measurement of the Magnetoelastic Characteristics for Tensile Stresses

71%
Salach J., Szewczyk R., Bieńkowski A., Kolano-Burian A., Falkowski M.
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issue 5
775-777
EN
The paper presents a novel method of measurements of tensile stress dependence of the magnetic characteristics of ring-shaped cores made of soft amorphous alloys. In the presented method, the uniform tensile stress was applied perpendicularly to the magnetizing field direction. Magnetoelastic core with closed magnetic circuit was fixed on the non-magnetic backings enabling the conversion of compressive force into tensile stresses as well as it enables the core to be winded by magnetizing and sensing windings. Magnetoelastic characteristics measured under tensile stress, for Fe_{25}Ni_{55}Si_{10}B_{10} alloy annealed in temperature 350°C for 1 h, are presented in this paper. The presented results indicate high tensile stress sensitivity of Fe_{25}Ni_{55}Si_{10}B_{10} alloy. Moreover, together with magnetoelastic characteristics for compressive stresses (presented previously in the literature), the describes results create possibility of further development of models of the magnetoelastic effects in amorphous alloys.
11
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Amorphous Soft Magnetic Fe_{80}B_{11}Si_{9} Alloy in Tensile Stress Sensors Application

71%
Salach J., Jackiewicz D., Bieńkowski A., Szewczyk R., Gruszecka M.
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vol. 126
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issue 1
102-103
EN
Paper presents the results of investigations of the influence of the tensile stresses on magnetic characteristics of Fe_{80}B_{11}Si_{9} amorphous alloy in as quenched and annealed state. For the tests, a special methodology of application of uniform tensile stresses to the ring shaped sample was developed. Due to special non-magnetic pads, the magnetizing and sensing coils can be wound around the core. Experimental results indicate high stress sensitivity of Fe_{80}B_{11}Si_{9} alloy in both as-quenched and annealed state. Permeability of the core decreases over 64% and 58% for as-quenched and annealed core respectively, especially for lower values of the amplitude of magnetizing field.
12
Content available remote

Magnetoelastic Villari Effect in Structural Steel Magnetized in the Rayleigh Region

71%
Kachniarz M., Kołakowska K., Salach J., Szewczyk R., Nowak P.
Acta Physica Polonica A
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2018
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vol. 133
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issue 3
660-662
EN
The following paper presents the results of investigation on the magnetoelastic Villari effect in structural steel magnetized in the so-called Rayleigh region, which corresponds to relatively low magnetizing fields, much lower than coercive field. Two grades of structural steel were investigated during the performed measurements. Obtained results indicate significant correlation between applied mechanical stress and magnetic properties of the investigated materials.
13
Content available remote

Functional Properties of Monolayer and Bilayer Graphene Hall-Effect Sensors

62%
Kachniarz M., Petruk O., Salach J., Ciuk T., Strupiński W., Bieńkowski A., Szewczyk R.
Acta Physica Polonica A
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2017
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vol. 131
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issue 5
1250-1253
EN
The paper describes the design, development, and investigation of a new type of Hall-effect sensors of a magnetic field made of graphene. The epitaxial growth of high-quality graphene structures was performed using a standard hot-wall CVD reactor, which allows for easy integration with an existing semiconductors production technologies. The functional properties of developed Hall-effect sensors based on graphene were investigated on special experimental setup utilizing Helmholtz coils as a source of reference magnetic field. Monolayer and quasi-free-standing bilayer graphene structures were tested. Results presented in the paper indicate that graphene is very promising material for development of Hall-effect sensors. Developed graphene Hall-effect sensor exhibit highly linear characteristics and high magnetic field sensitivity.
14
Content available remote

Temperature Resistance of Magnetoelastic Characteristics of 13CrMo4-5 Constructional Steel

52%
Jackiewicz D., Kachniarz M., Rozniatowski K., Dworecka J., Szewczyk R., Salach J., Bienkowski A., Winiarski W.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
614-616
EN
In the paper the results of investigation on tensile stresses dependence of magnetoelastic characteristics of cores made of 13CrMo4-5 constructional steel are presented. In the investigation step-cooling test treated samples were used. The step-cooling test process is a type of heat treatment simulating effects of passing time and environmental conditions (temperature and stress) on the sample. In the paper the method of testing the influence of stresses on the magnetic characteristics is presented. Frame shaped samples ensured a closed magnetic circuit and homogeneous distribution of stress. It was found that step-cooling test does not significantly influence the magnetoelastic characteristics and the structure of the samples. On the other hand, then tensile stresses significantly change the magnetic characteristics of 13CrMo4-5 constructional steel. That confirms the possibility of using measurements based on the magnetoelastic effect in the stress assessment for industrial non destructing testing of steel constructions.
15
Content available remote

Influence of Thermomagnetic Treatment on Magnetoelastic Properties of FeNiMoB Amorphous Alloy

52%
Szewczyk R., Svec P., Salach J., Švec P., Bieńkowski A., Hoško J., Jackiewicz D., Kamiński M., Winiarski W.
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vol. 126
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issue 1
52-53
EN
Paper presents the results of magnetoelastic tests of ring-shaped cores made of Fe_{40}Ni_{38}Mo_{4}B_{18} amorphous alloy. The cores were subjected to thermomagnetic annealing under different values of magnetic field. The obtained results enabled us to connect the magnetoelastic characteristics of Fe_{40}Ni_{38}Mo_{4}B_{18} amorphous alloy with the conditions of thermomagnetic treatment of the material.
16
Content available remote

The Influence of Thermomagnetic Treatment on the Magnetoelastic Characteristics of Fe₆₁Co₁₉Si₅B₁₅ Amorphous Alloys

52%
Salach J., Szewczyk R., Svec Sr P., Bieńkowski A., Jackiewicz D., Svec P., Nowicki M., Winiarski W., Kachniarz M., Gruszecka M.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
617-619
EN
Information about magnetoelastic properties of newly developed amorphous magnetic alloys is very important from practical point of view, especially in the case of high permeability materials such as the Fe₆₁Co₁₉Si₅B₁₅ amorphous alloy. In the case of such materials, effect connected with the influence of external stresses on the magnetic properties of the alloy should be tested. This paper presents experimental results of the magnetoelastic properties investigation of the Fe₆₁Co₁₉Si₅B₁₅ amorphous alloy, annealed without magnetic field as well as in the magnetic field. Such thermo-magnetic treatment generated anisotropy has significant influence on the total free energy of magnetic material. In the magnetoelastic investigation, the compressive stress was applied to the ring shaped core, perpendicularly to the magnetizing field direction. Due to the fact, that cores with closed magnetic circuits were used, demagnetization did not change the balance of total free energy in the material.
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