This study introduces an innovative, non-contact method for classifying the hardness of austenitic stainless steels (grade AISI 304) based on their intrinsic magnetic fields. Utilizing a 3 × matrix sensor system, this research captures weak fields to produce precise 2D field maps samples. A key advancement is application modified GoogleNet convolutional neural network, optimized with stochastic gradient descent momentum algorithm, which achieves exceptional classification accuracy, ranging...

This study systematically investigates the influence of heat treatment on mechanical and magnetic properties AISI 304 austenitic stainless steel following cold rolling. Experimental analyses were conducted samples annealed at 50 °C to 1200 in 25 increments. The characterized through chemical metallographic analyses, microhardness testing, hardness measurements, tear-off force evaluations. Magnetic assessed using a fluxgate sensor analyze intrinsic field variations. findings reveal that...

The article discusses the practical application of method electromagnetic non-destructive investigation austenitic materials. To identify and evaluate deep artificial defects, sweep-frequency eddy current with harmonic excitation is used. objects interest are surface electric-discharged machined notches, a defined geometry, fabricated in plate thickness 30 mm. An innovative probe separate detection circuit used for investigation. achieved results clearly demonstrate robustness potential...

The paper brings original measurement results of the high-frequency electromagnetic field as a product various communication devices and technologies inside car. measurements were performed conventional vehicle under standard condition at an urban environment. electric strength has been measured using BK Precision BK2650A spectral analyzer together with omnidirectional 8dBi antenna. took place in 500 MHz-3300 MHz frequency band, for EM wave horizontal polarization. study did not find...

The article's subject is the investigation of electromagnetic fields (EMF) microwave frequency band in a typical human living environment, especially shielded areas. point view field presence environment with rapid increase level background currently an essential concerning population protection against potential adverse effects such EMFs. authors focus on actual measurements, spaces frequently used everyday life, as elevator cabins and cars. goal quantitative evaluation distribution...

Non-destructive methods of material properties evaluation are presented in the paper. The useful especially for increasing safety sophisticated and environment threatening facilities and, consequently, decreasing operating expenditures those facilities. attention is paid mainly to method that utilises eddy currents induced surface layer conducting samples by means a small flat coil. current testing theoretically described results its particular application

An investigation of artificial flaws in electromagnetic non-destructive evaluation using eddy-current frequency-response analysis is carried out this study. A new approach incorporating innovative solution proposed. The goal was to increase the resolution gained signals contrast conventional sweep-frequency method. proposed procedure tested on real material specimens where differential responses were from electro-discharge machined flaws. Two plate having EDM various dimensions inspected....

An investigation of real corrosion cracks that can be partially conductive in electromagnetic non-destructive evaluation using sweep-frequency eddy-current frequency-response analysis is carried out this study. A new approach incorporating innovative solutions proposed. The goal was to increase the probability detection contrast conventional method based on single-point signal detection. proposed procedure tested material specimens where differential responses were gained from cracks. Seven...

The purpose of the study was to design, develop, and implement an e-oncology: a technical solution based on self-management supportive treatment using mobile communication device utilizing NFC technology. goal optimize process treating oncology patients make it more efficient. idea designed system create complex multifunctional application that would help in their subsequently work medical staff easier. Direct attention paid design implementation module itself, including development...

The main goal of the paper is measurement electromagnetic field distribution inside car with modern embedded wireless technologies. Measurement was performed in standard urban environment mobile phone Bluetooth connection for two cases, without usage and receiving call. Results show, that more technologies are many high frequency sources fields. Although values these measured variables do not exceed limit levels, it depends on current state organism time exposure.

This article details the software and hardware background of our developed PetriCounter solution targeted as a replacement for commercially available Petri dish counters. The mentioned semi-automated has proven to be invaluable in several scientific research endeavors where manual methods have resulted either large human error or are too tedious accomplish using traditional methods. proposed algorithms may also used other areas image manipulation feature extraction, such localization...

Signal recorded by electrocardiogram (ECG) is one of the most important biosignals giving information about state living organism. The ECG, for example carries instantaneous heart frequency, based on rate variability. Changes in from beat to gives valuable diagnostic autonomous nervous system status and itself. paper describes a method analysis variability frequency time-frequency domain. In order compare alternative results four basic methods were chosen, namely: Welch, Burg, Lomb-Scargle...

Any study program established on Electrical Engineering must include Circuit Theory. A well-written practical guide supplemented by exercises fills in the gaps between theory and practice for students. This article deals with implementing laboratory subject of Circuits students 1st year their bachelor's degree at Faculty Information Technology. The describes teaching these newly introduced exercises. history faculty is long. Over years, it has undergone many changes. circuits are a critical...

The article deals with the actual R&D problem of detection and analysis recording cough sounds because mechanical vibrations biological structure. It is a reaction medical practice to need for qualitative quantitative evaluation sounds. takes place in sleep laboratory university hospital via polysomnographic ex-amination. obtained signals are mathematically statistically evaluated. Wavelet transform, power spectral density, cross-correlation function other significant parameters mainly used...

The present paper deals with the computer-aided modelling of blood vessels bifurcations using electro-mechanical analogy electric transmission lines. model allows assessing Murray's cubic law and its comparison real state large small arteries branching in human body.

The aim of this work is to perform the electromagnetic nondestructive evaluation on conductive material using sweep frequency eddy current testing. potential for technique be used more complex defect detection being investigated. Three types probes are examine three specimens with presence artificial notches. Gained signals processed and discussed.

The electro-mechanical analogy method is used for the simulation of blood flow in vessels. Particularly subject this paper investigation influence terminal segment topology on pressure propagation patterns. cardiovascular system widely branched and therefore very complex. Thus, it impractical to create model consisting all vessels attention focused development models smaller parts vascular system. selection adjustment segments such important behalf accuracy. Three different types were...