10.14489/td.2021.01.pp.004-011

2021, 01 January

DOI: 10.14489/td.2021.01.pp.004-011

Danilov V. N.
TO A QUESTION ABOUT QUASIBAND OF ACOUSTIC AXIS OF THE ANGLE BEAM PROBE
(pp. 4-11)

Abstract. On the basis of modelling an acoustic path of the angle beam probe with a reflector as a side drilled hole influence of two factors resulting to quasiband of acoustic axis of the angle beam probe is shown, first of which is connected to change of amplitude echo signal owing to attenuation of a shear wave in the environment due to absorption and dispersion, and the second factor – with change of amplitude owing to a divergence of wave fronts radiated and received elastic waves. Influence of the first factor is increased with growth of attenuation and depth of reflector, and the second – on increase of distance up to a reflector practically does not depend. Quantitative estimations have revealed a ratio of influence of both factors on size of a angle quasiband of acoustic axis on value of factor of attenuation of shear waves. Reduction of an angle quasidand with increase of radius piezoplate of the angle beam probe is shown at constant operation frequency, that is at narrowing the directivity characteristic of the probe.

Keywords: angle beam probe, side drilled hole, acoustic сhannel, quasiband of acoustic axis, beam index, shear wave attenuation, directivity characteristic, average size of a grain.

+ - About the Authors Click to collapse

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. 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.

+ - References Click to collapse

1. Ermolov I. N., Lange Yu. V. (2006). Non-destructive testing: reference book: in 8 volumes. Vol. 3. Ultrasonic testing. 2nd ed. Moscow: Mashinostroenie. [in Russian language]
2. Shcherbinskiy V. G. (2014). Technology of ultrasonic testing of welded joints. 3rd ed. Saint Petersburg: SVEN. [in Russian language]
3. Danilov V. N. (2015). Calculation of the acoustic path of an inclined transducer for a cylindrical reflector. Kontrol'. Diagnostika, (1), pp. 33 – 45. [in Russian language] DOI: 10.14489/td.2015.01.pp.033-045
4. Danilov V. N. (2015). Formulas of the acoustic path of the combined oblique transducer for the far zone. Kontrol'. Diagnostika, (2), pp. 43 – 50. [in Russian language] DOI: 10.14489/td.2015.02.pp.043-050
5. Danilov V. N. (2009). Calculation of the acoustic field of an oblique transducer in the far zone. Defektoskopiya, (12), pp. 36 – 51. [in Russian language]
6. Brekhovskih L. M., Godin O. A. (1989). Acoustics of layered media. Moscow: Nauka. [in Russian language]
7. Danilov V. N., Ushakov V. M., Mihalev V. V. (2012). On the issue of modeling the acoustic path of an inclined transducer during ultrasonic testing of welded products of small thickness. Defektoskopiya, (10), pp. 28 – 39. [in Russian language]
8. Non-destructive testing. Welded connections. Ultrasonic methods. (1986). Ru Standard No. GOST 14782–86. Moscow: Goskomstat. [in Russian language]
9. Ermolov I. N. (1992). Ultrasound control: a quick handbook. Moscow: NPO TsNIITMASh. [in Russian language]
10. Non-destructive testing. Ultrasonic transducers. General technical requirements. (1990). Ru Standard No. GOST 26266–90. Moscow: Goskomstat. [in Russian language]

+ - Purchase digital version of a single article Click to collapse

This article is available in electronic format (PDF).

The cost of a single article is 450 rubles. (including VAT 18%). After you place an order within a few days, you will receive following documents to your specified e-mail: account on payment and receipt to pay in the bank.

After depositing your payment on our bank account we send you file of the article by e-mail.

To order articles please copy the article doi:

10.14489/td.2021.01.pp.004-011

and fill out the form