Measurement of ultrasonic pulse arrival time by constructing a signal model to determine its propagation velocity

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The paper considers several methods of measuring the arrival time of ultrasonic pulses. A method for determining the pulse arrival time based on the construction of a signal model with an adaptive dictionary and the search for the minimum of the target function by the quantum swarm intelligence method is proposed. The results of numerical and modeling experiments on measuring the propagation velocity of ultrasonic waves in various samples are presented. It is shown that the proposed method of determining the time of pulse arrival is more resistant to distortion of the echo waveform arising due to frequency-dependent attenuation in the material of the control object.

Толық мәтін

Рұқсат жабық

Авторлар туралы

E. Bazulin

ECHO+ Research and Production Center LLC

Хат алмасуға жауапты Автор.
Email: bazulin@echoplus.ru
Ресей, 123458, Moscow, Tvardovskogo St., 8, Technopark “Strogino”

A. Krylovich

Moscow Power Engineering Institute (National Research University)

Email: bazulin@echoplus.ru
Ресей, 111250, Moscow, Krasnokazarmennaya St., 14

Әдебиет тізімі

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Қосымша файлдар

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Әрекет
1. JATS XML
2. Fig. 1. The measured echo signal (red graph) and the pulse model determined by formula (6) (black graph)

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3. Fig. 2. The dependence of the relative error on the measurement base.

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4. Fig. 3. Dependence of the velocity dispersion and attenuation coefficient on the frequency for the steel image.

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5. Fig. 4. Echo signals and their spectra at the operating frequency of the converter in 5 MHz for steel.

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6. Fig. 5. Dependence of velocity dispersion and attenuation coefficient on frequency for plexiglass.

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7. Рис. 6. Эхосигналы и их спектры на рабочей частоте преобразователя в 5 МГц для плексигласа.

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8. Fig. 7. Dependence of the sound propagation velocity estimate on the sample thickness at frequencies of 5 and 10 MHz.

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9. Fig. 8. Photo of a sample of different heights.

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10. Fig. 9. Dependence of the longitudinal wave propagation velocity on thickness when using two thickness gauges and different PEGS.

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11. Fig. 10. View of the original signal with template subtraction.

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12. Fig. 11. Echo signals and their spectra at an operating frequency of 5 MHz in a multi-height sample in a step with a thickness of 16 mm.

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13. Fig. 12. Dependence of the longitudinal wave velocity on the thickness of the step and the number of reflections at a frequency of 5 MHz and 10

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14. Fig. 13. View of the echo signal of element 17 for the antenna array at a frequency of 5 MHz.

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