Определение коэффициента погонного затухания ультразвуковой волны в неоднородном материале посредством обработки реализаций структурного шума

Владимир [Vladimir] Герасимович [G.] Карташев [Kartashev]; Алексей [Aleksey] Сергеевич [S.] Фадин [Fadin]; Эдуард [Eduard] Игоревич [I.] Трунов [Trunov]; Зайд [Zaid] Салех Салем [Salekh S.] Али [Ali]

doi:10.24160/1993-6982-2017-4-146-155

Владимир [Vladimir] Герасимович [G.] Карташев [Kartashev]
Алексей [Aleksey] Сергеевич [S.] Фадин [Fadin]
Эдуард [Eduard] Игоревич [I.] Трунов [Trunov]
Зайд [Zaid] Салех Салем [Salekh S.] Али [Ali]

DOI: https://doi.org/10.24160/1993-6982-2017-4-146-155

Keywords: ultrasonic waves, attenuation ratio measurement, inhomogeneous materials, structural noise, experimental corroboration

Abstract

The article presents a new method for measuring the ultrasonic wave attenuation ratio in inhomogeneous material by processing structural noise (SN) realizations taking into account the frequency dependence pattern of ultrasonic wave attenuation ratio, the converter directivity characteristics and their frequency dependences. A pulse with a broad-base linear modulation is suggested to be used as the probing signal. A structural noise realization processing algorithm is proposed, which includes determination of the SN dispersion variation law by integrating SN realizations in a sliding window, a procedure for eliminating the influence of side factors, the taking of logarithm of the obtained dependence, and a linear regression operation. In order to obtain more accurate results, it is recommended to apply an iterative process with using a correction function. For experimentally verifying the method, the ultrasonic wave attenuation ratio in a concrete block was measured using both the classical shadow method and the proposed technique. Good agreement between the measurement results has confirmed the efficiency of the new technique, which can be used for monitoring the state of bulky objects with one-sided access.

Information about authors

Владимир [Vladimir] Герасимович [G.] Карташев [Kartashev]

Science degree: Dr. Sci. (Techn.)

Workplace Fundamentals of Radio Engineering Dept., NRU MPEI

Occupation Professor

Алексей [Aleksey] Сергеевич [S.] Фадин [Fadin]

Workplace Fundamentals of Radio Engineering Dept., NRU MPEI

Occupation Рh.D.-student

Эдуард [Eduard] Игоревич [I.] Трунов [Trunov]

Workplace Fundamentals of Radio Engineering Dept., NRU MPEI

Occupation Ph.D.-student

Зайд [Zaid] Салех Салем [Salekh S.] Али [Ali]

Science degree: Ph.D. (Techn.)

Workplace Fundamentals of Radio Engineering Dept., NRU MPEI

Occupation Assistant

References

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2. Марков Г.Т., Сазонов Д.М. Антенны. М.: Энергия, 1975.

3. Маделунг Э. Математический аппарат физики. М.: Физматгиз, 1960.
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Для цитирования: Карташев В.Г., Фадин А.С., Трунов Э.И., Али Зайд Салех Салем. Определение коэффициента погонного затухания ультразвуковой волны в неоднородном материале посредством обработки реализаций структурного шума // Вестник МЭИ. 2017. № 4. С. 146—155. DOI: 10.24160/1993-6982-2017-4-146-155.
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1. Kartashev V.G. Izmerenie Koeffitsienta Oslableniya Ul'trazvuka v Materiale s Neodnorodnoy Strukturoy pri Odnostoronnem Dostupe. MPEI Vestnik. 2013;4:110—114. (in Russian).

2. Markov G.T., Sazonov D.M. Antenny. M.: Energiya, 1975. (in Russian).

3. Madelung E. Matematicheskiy Apparat Fiziki. M.: Fizmatgiz, 1960. (in Russian).
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For citation: Kartashev V.G., Fadin A.S., Trunov E.I., Ali Zayed Saleh Salem. Determining the Ultrasonic Wave Specific Attenuation Ratio in Inhomogeneous Material by Processing Structural Noise Realizations. MPEI Vestnik. 2017; 4: 146—155. (in Russian). DOI: 10.24160/1993-6982-2017-4-146-155.