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Calculating the Influence of Refractions and Reflections from Curvilinear Surfaces of Shells of Revolution on Acoustic Field
Russian Journal of Nondestructive Testing ( IF 0.9 ) Pub Date : 2020-04-13 , DOI: 10.1134/s1061830920010076 A. V. Michurov , A. V. Sokolkin
中文翻译:
计算旋转壳的曲线曲面的折射和反射对声场的影响
更新日期:2020-04-13
Russian Journal of Nondestructive Testing ( IF 0.9 ) Pub Date : 2020-04-13 , DOI: 10.1134/s1061830920010076 A. V. Michurov , A. V. Sokolkin
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.中文翻译:
计算旋转壳的曲线曲面的折射和反射对声场的影响