10.14489/td.2026.09.pp.015-022

2026, 09 September

DOI: 10.14489/td.2026.09.pp.015-022

Danilov V. N.
ON SOME FEATURES OF REFLECTION OF PULSES OF SHEAR VERTICAL WAVES OF VARIOUS DURATIONS FROM A CYLINDRICAL HOLE
(pp. 15-22)

Abstract. Based on modeling the reflection of shear vertical waves emitted and recorded by an angle probe from a side drilled hole, calculations of run round-slip off wave and mirror-reflected pulses were performed, which showed an increase in the ratio of their maxima with a decrease in the duration of the emitted pulse. For very short pulses and holes with radii of 1.25 and 2.50 mm at the nominal frequency of the 2.5 MHz probe, the ratio of the amplitudes of the run round-slip off wave and mirror reflected pulses turned out to be quite close to the known experimental values. The peculiarity of a small change in the ratio of the amplitudes of the run round-slip off wave and mirror reflected pulses for a cylindrical hole with a radius of 1.25 mm with an increase in the nominal frequency from 2.5 to 5.0 MHz is established.

Keywords: cylindrical hole, shear wave, run round-slip off wave pulse, mirror reflected pulse, hole radius, pulse duration, echo spectrum, damper impedance.

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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.

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DOI: 10.14489/td.2026.09.pp.015-022

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