10.14489/td.2024.05.pp.004-011

2024, 05 May

DOI: 10.14489/td.2024.05.pp.004-011

Danilov V. N.
ON THE EFFECT OF THE DURATION OF THE EMITTED PULSE ON THE DGS-DIAGRAM OF THE NORMAL PROBE
(pp. 4-11)

Abstract. The influence of the pulsed nature of the signal of various durations emitted during ultrasonic monitoring on the DGS-diagram of a normal probe with a round piezoplate using an approximate far field formula for the distance to the probe over three near fields has been studied by computer modeling. For a distance of up to one and a half near fields, a scalar approximation of the integral representation of the pressure on the probe was used when receiving a longitudinal wave reflected from a flat bottom hole for the case of an axis symmetric arrangement of the hole and the probe. In the far field, the influence of the pulsed nature of the signal emitted during ultrasonic monitoring on the DGS-diagram has not been established, and for the distance to the probe of no more than 1,5 near fields, the results of the calculations carried out generally qualitatively confirm the effect of the change in the duration of the emitted pulse on the DGS-diagram, shown in the previously published works of prof. I. N. Ermolov.

Keywords: DGS-diagram, normal probe, pulse, flat bottom hole, near field, far field, signal, round piezoplate.

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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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1. Ermolov I. N. (1992). Ultrasound testing: a short handbook. Moscow: NPO TsNIITMASh. [in Russian language]
2. Ermolov I. N., Vopilkin A. H., Badalyan V. G. (2000). Calculations in ultrasonic flaw detection: a short handbook. Moscow: NPTs NK «EKhO+». [in Russian language]
3. Klyuev V. V. (Ed.), Ermolov I. N., Lange Yu. V. (2006). Ultrasonic testing. Non-destructive testing: reference book: in 8 volumes. Vol. 3. 2nd ed. Moscow: Mashinostroenie. [in Russian language]
4. Ermolov I. N. (1981). Theory and practice of ultrasonic testing. Moscow: Mashinostroenie. [in Russian language]
5. Razygraev A. N., Razygraev N. N., Dikov I. A. (2016). Guidelines for the use of DGS diagrams for ultrasonic testing of base metal, welded joints and surfacing. Moscow: ID «Spektr». [in Russian language]
6. Danilov V. N., Ermolov I. N. (2000). On the issue of calculating ARD diagrams. Defektoskopiya, (7), 35 ‒ 43. [in Russian language]
7. Danilov V. N., Ermolov I. N. (2000). Calculation of the DGS diagram based on the maximum echo signal. Defektoskopiya, (12), 35 ‒ 42. [in Russian language]
8. Danilov V. N. (2009). To the calculation of the acoustic field of an inclined transducer in the far zone. Defektoskopiya, (12), 36 ‒ 51. [in Russian language]
9. Danilov V. N., Voronkova L. V. (2019). Investigation of the effect of attenuation of elastic longitudinal waves in cast iron with flake graphite on the characteristics of signals during ultrasonic testing. Kontrol'. Diagnostika, (6), 18 ‒ 33. [in Russian language] DOI: 10.14489/td.2019.06.pp.018-033
10. Danilov V. N., Voronkova L. V. (2020). Investigation of the specificity of ultrasonic testing of cast iron with globular graphite using longitudinal elastic waves. Kontrol'. Diagnostika, 23(2), 6 ‒ 25. [in Russian language] DOI: 10.14489/td.2020.02.pp.006-025
11. Danilov V. N., Voronkova L. V. (2021). On the peculiarities of directional patterns and DGS diagrams of direct transducers during ultrasonic testing of spheroidal graphite cast iron. Tyazheloe mashinostroenie, (3), 14 ‒ 20. [in Russian language]
12. Danilov V. N. (2006). Computer simulation program for the operation of electroacoustic paths of flaw detectors “Impulse +”. Defektoskopiya, (3), 37 ‒ 43. [in Russian language]

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DOI: 10.14489/td.2024.05.pp.004-011

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