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Modelling Acoustic–Electric Nondestructive Testing for Defects in Dielectric Materials
Russian Journal of Nondestructive Testing ( IF 0.9 ) Pub Date : 2021-06-11 , DOI: 10.1134/s1061830921020029
A. A. Bespal’ko , A. P. Surzhikov , D. D. Dann , G. E. Utsyn , M. V. Petrov , E. K. Pomishin

Abstract—

The influence of defectiveness of solid-state dielectric samples on the parameters of the electromagnetic response under deterministic acoustic action on the test object is demonstrated. Regularities of changes in the parameters of electromagnetic signals due to variations and an increase in the electric field strength vector with respect to the contact between the materials of the sample and of the defect are given. It is shown that the amplitude-frequency parameters of the emitted electromagnetic signals are directly related to the acoustic impedance and conductivity of the contacting medium and defect. The correspondence of the amplitudes of electromagnetic responses to the temporal and spatial distribution of mechanical stresses arising in a defective system during the propagation of an acoustic pulse has been established. The data on changes in the parameters of electromagnetic signals with an increase in the size of model defects in samples of the same type are presented.



中文翻译:

介电材料缺陷的声电无损检测建模

摘要-

证明了固态电介质样品的缺陷对测试对象的确定性声学作用下的电磁响应参数的影响。给出了由于样品材料和缺陷材料之间接触的电场强度矢量的变化和增加引起的电磁信号参数变化的规律。结果表明,发射电磁信号的幅频参数与接触介质和缺陷的声阻抗和电导率直接相关。已经建立了电磁响应幅度与声脉冲传播期间在有缺陷系统中产生的机械应力的时间和空间分布的对应关系。

更新日期:2021-06-13
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