A. A. Abouellail

DETECTION ALGORITHM FOR FAULTY CONTACT JOINTS IN ELECTRICAL NETWORK

Alexey I. Soldatov, Andrey A. Soldatov, Maria A. Kostina, A. A. Abouellail

The article proposes a thermoelectric method for monitoring the contact resistance of contact joints in power grids. It describes an algorithm to detect faulty contact joints with resistance exceeding the value specified in regulatory standards. The algorithm is considered using the example …

Hands-on Experience of THERMO FITNESS TESTING Device Use for Thermoelectric Evaluation of Metallic Materials

Andrey A. Soldatov, A. I. Soldatov, М. А. Костина, A. A. Abouellail

The article describes experience of practical application of the differential thermoelectric tester "THERMO FITNESS TESTING". Description of the sensor design and results of differential thermoelectromotive force measurement for a large group of metals widely used in Russia are given. Usage of the …

ru, nl, Égypte (code pays fourni par la source)

THERMOELECTRIC MONITORING OF THERMAL RESISTANCE IN ELECTRONIC SYSTEMS

A. A. Abouellail

The article proposes to apply the method of thermoelectric testing to determine the thermophysical parameters of the thermal interface. A thermal interface is located between metal surfaces, between which, thermoelectromotive force occurs during heating at any stage of the device operation. The …

Laboratory Substantiation of Thermoelectric Method for Monitoring Contact Resistance

A. A. Abouellail, Ts. Chang, Alexey I. Soldatov, Andrey A. Soldatov et autres

Abstract The results of modeling the heating of a contact resistance between two conductors during the current flow are presented. It is shown that its temperature can reach values comparable to insulation melting and ignition temperatures. At the same time, the control …

Égypte, cn, ru (code pays fourni par la source)

Influence of Destabilizing Factors on Results of Thermoelectric Testing

A. A. Abouellail, Ji. Chang, Alexey I. Soldatov, Andrey A. Soldatov et autres

Abstract The results of studying the effect of the transient resistance of contacts on the result of differential thermoelectric testing are presented. The principle of the differential testing method with two hot electrodes and one heating system, as well as the design …

Égypte, cn, ru (code pays fourni par la source)

Bilateral Filter for Small-Angle Ultrasonic Tomography Using Linear Arrays

Jianvlei Chang, Lin Li, A. A. Abouellail, Andrey A. Soldatov et autres

The article describes small-angle ultrasonic tomography using linear arrays. A bilateral filter is used to improve the quality of the tomogram image reconstruction. The use of a window on the model is studied and tested on the experimental data. The results of …

ru, cn (code pays fourni par la source)

Inspection of Transformer Mechanical Integrity Using Sweep Frequency Response Method

Youssef Abouellail, A. A. Abouellail, Aleksey Soldatov, El-Saady Gaber

Égypte, ru (code pays fourni par la source)

Application of Elliptical Properties in Building a Tomographic Image of an Inspected Object Using Multi-Element Ultrasonic Sensor Data

Y.V. Shulgina, Evgeny Shulgin, A. A. Abouellail, M. V. Kostina et autres

ru (code pays fourni par la source)

Automatic device for testing thermal resistance with thermoelectric effect

I M Vasiliev, Alexey I. Soldatov, Alexey Dementiev, Andrey A. Soldatov et autres

Abstract This paper presents the results of the developed device for testing thermal resistance of thermointerface. Experiments to determine thermal resistance in different cases of thermal interface application were carried out. Dependence of thermoEMF value is obtained, which occurs between semiconductor element …

ru (code pays fourni par la source)

The Resolution Capability of the Through-Transmission Method of Testing of Composites Using Linear Array

Jianglei Chang, Alexey I. Soldatov, A. A. Abouellail, Andrey A. Soldatov et autres

Composite material is widely used, therefore, quality control tasks in the production and application of materials are important. To date, various methods of ultrasonic testing of composites have been used. In the through-transmission method, radiation passes through the object only once, so …

ru (code pays fourni par la source)

Monitoring of Power Supply

I. I. Obach, A. A. Abouellail, Alexey I. Soldatov, Andrey A. Soldatov et autres

This article explains the results of the study of the transient resistance of connectors of various types, such as screw terminals, twist-on wire connectors “wire nuts”, self-clamp connectors “WAGO”, wire twisting of 3 cm and 5 cm. The influence of the transient …

cn, ru (code pays fourni par la source)

Software Simulation of Thermocouples

A. A. Abouellail, Y. A. Abouellail, Alexey I. Soldatov, Andrey A. Soldatov et autres

This paper presents a developed software, which allows to vastly investigate the influence of multipoint contact to research the thermoelectrical characteristics of two dissimilar thermoelectric power sources. With the help of this software, two different sources of thermoelectric power can be simulated …

us (code pays fourni par la source)