10.14489/td.2020.01.pp.038-043

2020, 01 January

DOI: 10.14489/td.2020.01.pp.038-043

Mordasov S. A., Negulyaeva A. P., Chernyshov V. N.
MICROWAVE HEATING IN THE SYSTEM OF NON-DESTRUCTIVE TESTING OF THE THERMOPHYSICAL CHARACTERISTICS OF BUILDING MATERIALS AND PRODUCTS
(pp. 38-43)

Abstract. A new method is proposed for determining the thermophysical characteristics (thermal conductivity and thermal diffusivity) of building materials and products according to the results of measurements at two points in time of the surface temperature of the object under study, which is subjected to pulsed thermal effect from a given power focused into the line of microwave radiation. In the proposed method, the number of pulses and their repetition rate are set adaptively when the steady-state excess temperature is reached at the control point with two predetermined values at two points in time, which allows non-destructive testing of the studied objects, since the preset temperature values are taken 20…30 % less temperature thermal decomposition of the studied materials, as well as receive information in the frequency-pulse form, which increases the accuracy of the control results and noise method To implement the proposed method, a microprocessor-based information-measuring system has been developed that has experimentally confirmed the efficiency of the method and the correctness of its theoretical conclusions.

Keywords: non-destructive testing, thermal diffusivity, thermal conductivity, microwave heating, construction heat engineering, microprocessor system.

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S. A. Mordasov, A. P. Negulyaeva, V. N. Chernyshov (Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University”, Tambov, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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DOI: 10.14489/td.2020.01.pp.038-043

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