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Russian Journal of Nondestructive Testing
Erschienen in: Russian Journal of Nondestructive Testing 1/2020

01.01.2020 | ACOUSTIC METHODS

Calculating the Influence of Refractions and Reflections from Curvilinear Surfaces of Shells of Revolution on Acoustic Field

verfasst von: A. V. Michurov, A. V. Sokolkin

Erschienen in: Russian Journal of Nondestructive Testing | Ausgabe 1/2020

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Abstract

In the ray optics approximation, we have calculated the effect that changes in the directivity (defocusing) of an acoustic field due to refraction on a curvilinear entry surface and/or single or multiple reflections from curved inner surfaces of the shells of revolution have on the echo signal amplitude. The coincidence of the calculation results with the results of available studies is shown for special cases. A formula for calculating changes in the amplitude makes it possible to determine a defocusing-related change in the size of the echo pulse beam at the entry surface. The correctness of the calculation is confirmed experimentally, using specimens of pipes with embedded artificial corner reflectors.
Vorheriger Artikel Dispersion Equation for Longitudinal Waves in a Layered Medium with Inhomogeneous Boundary Conditions in Different Propagation Directions
Nächster Artikel Determining Friction Coefficient at Run-In Stage and Diagnosing the Point of Transition to Steady-State Phase Based on Acoustic Emission Signals

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Metadaten
Titel
Calculating the Influence of Refractions and Reflections from Curvilinear Surfaces of Shells of Revolution on Acoustic Field
verfasst von
A. V. Michurov
A. V. Sokolkin
Publikationsdatum
01.01.2020
Verlag
Pleiades Publishing
Erschienen in
Russian Journal of Nondestructive Testing / Ausgabe 1/2020
Print ISSN: 1061-8309
Elektronische ISSN: 1608-3385
DOI
https://doi.org/10.1134/S1061830920010076

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