10.14489/td.2015.01.pp.033-045

2015, 01 January

DOI: 10.14489/td.2015.01.pp.033-045

Danilov V.N.
CALCULATION OF AN ACOUSTIC CHANNEL OF THE ANGLE BEAM PROBE FOR THE CYLINDRICAL REFLECTOR
(pp. 33-45)

Abstract. The calculation of an acoustic сhannel of the angle beam probe for empty cylindrical reflector as a multidimensional spatial Fourier transform (integral representation on projections of wave numbers) is conducted, on the basis of the transform in nearing geometrical acoustic, the asymptotic formula for a far-field region is obtained. The conclusions of calculations for a maximum of a signal are compared with obtained on model of a similar сhannel by prof. I. N. Ermolov. The simulation of an acoustic сhannel for a side drilled hole of a standard sample СО-2 has shown the presence of effect of difference in the smaller party of an angle of probe, for which one it has a maximum signal, from a nominal, similar to known phenomenon of quasiband of acoustic axis, but having a different physical interpretation.

Keywords: angle beam probe, side drilled hole, acoustic сhannel, quasiband of acoustic axis, beam index, nearing ge-ometrical acoustic method, method of a fixed phase.

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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.

+ - References Click to collapse

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