Paweł Nowak

Research Field

Zener diode

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Citations (1)

Inverse Transformation in Eddy Current Tomography with Continuous Optimization of Reference Defect Parameters

Materials (2021)

Paweł Nowak Roman Szewczyk Anna Ostaszewska-Liżewska

This paper presents a methodology of inverse tomography transformation in eddy current tomography with the use of continuous optimization of reference defect parameters. Ferromagnetic steel samples with rectangular air inclusion defects of known dimensions were prepared and measured using an eddy current tomography setup. FEM-based (Finite Element Method based) forward tomography transformation was developed and utilized in inverse tomography transformation. The presented method of inverse tomography transformation is based on the continuous optimization of parameters that can describe the sample, such as the diameter and dimensions of the reference defect. The obtained results of inverse tomography transformation were in high accordance with the real parameters of the samples. Additionally, the presented method had acceptable repeatability. The obtained values of the sample parameters fit within the range of expanded uncertainty when compared to the real parameters of the sample.

10.3390/ma14174778

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Citations (2)

Influence of Temperature on Magnetostrictive Delay Line Properties

Acta Physica Polonica A (2017)

Jacek Salach Tomasz Charubin Paweł Nowak Dorota Jackiewicz

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.

Line (geometry)

10.12693/aphyspola.131.1183

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Citations (1)

Measurement of Parameters of MEMS Electronic Filters with Automatic Determination of Uncertainty

Pomiary Automatyka Robotyka (2022)

Natalia Wasilewska Paweł Nowak Roman Szewczyk

MEMS type electronic filters used in practice require experimental testing of amplitude and phase characteristics. This requires the development of a measurement method that will not only measure the characteristics, but also allow for the simultaneous estimation of the measurement uncertainty. The computer-controlled measuring system described in the article enables the measurement of filter characteristics while maintaining measurement traceability, taking into account the fully automated process of estimating the measurement uncertainty. The tests carried out during the study of the characteristics of the exemplary magnetostrictive filter confirmed both the correctness of the proposed solution and its applicability in practice.

Traceability

10.14313/par_245/43

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Citations (0)

Optimization of Interpolation for Improved Numeric Calculation of Forward Eddy Current Tomography Transformation

Advances in intelligent systems and computing (2017)

Paweł Nowak Roman Szewczyk Robert Ugodziński Piotr Bazydło

Interpolation

10.1007/978-3-319-54042-9_46

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Citations (4)

Resistance of MAX 6325 Reference Voltage Source on Operating Temperature Variation