10.14489/td.2015.010.pp.009-016

2015, 10 October

DOI: 10.14489/td.2015.010.pp.009-016

Danilov V.G.
THE FORMULAS OF AN ACOUSTIC FAR FIELD ZONE CHANNEL OF AN ANGLE BEAM PROBE FOR AN ANGLE REFLECTORS SUCH AS A VERTICAL CYLINDRICAL ANGLE REFLECTOR AND A SHORT VERTICAL DRILLED HOLE
(pp. 9-16)

Abstract. It is obtained the formulas of an acoustic far field zone сhannel of the angle beam probe for angle reflectors such as a vertical cylindrical angle reflector and a short vertical drilled hole. They allow to calculate of the signals at a repositioning the probes on a surface of the control. These formulas coincide the corresponding formulas of prof. I. N. Ermolov for an estimation of maxima of amplitudes of echo signals for reflectors located on long distance from probes. It is given the calculation results of signal amplitudes for the reflector – vertical cylindrical angle and the interpretation of observed features.

Keywords: an acoustic сhannel, angle beam probe, shear wave, angle of probe, angle reflector, vertical cylindrical angle reflector, short vertical drilled hole, reflection coefficient, surface of the control.

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V. N. Danilov
JSC “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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