10.14489/td.2015.03.pp.044-053

2015, 03 March

DOI: 10.14489/td.2015.03.pp.044-053

Danilov V.N.
THE FORMULAS OF AN ACOUSTIC CHANNEL OF A ULTRASONIC SCAN BY A TANDEM TECHNIQUE
(pp. 44-53)

Abstract. The formulas of an acoustic сhannel of an ultrasonic scan by a tandem technique for the basic flaw models (artifiсial reflectors) are ad-duced. These formulas allow to conduct calculations of signals at a repositioning of a system of probes on a scanning surface concerning reflectors. The formulas for maxima of signals are compared to the currently used formulas by prof. I. N. Ermolov. The formulas are obtained taken into account the features of influencing on amplitude of an echo signal of a divergence of a wave front set of a reflected wave in the main and additional planes, that in the tandem scheme technique earlier have not been considered. For reflectors such as a side drilled hole and spherical reflector features of a wave reflection from a curvilinear surface for diverse transmitting and receiving probes are also taken into account.

Keywords: a tandem technique, formula of an acoustic сhannel, angle beam probe, main and additional planes, shear wave, angle of probe, vertical plane, flat bottom hole, side drilled hole, spherical reflector, transformation coefficient.

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V. N. Danilov
PJSC RPA “CNIITMASH”, Moscow, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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DOI: 10.14489/td.2015.03.pp.044-053

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