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Sensitivity of Electromagnetic-Acoustic Multiple Shadow Method Using Rayleigh Waves in Inspection of Oil Country Tubular Goods
Russian Journal of Nondestructive Testing ( IF 0.9 ) Pub Date : 2021-02-19 , DOI: 10.1134/s1061830920120050
O. V. Murav’eva , L. V. Volkova , V. V. Murav’ev , M. A. Sintsov , Yu. V. Myshkin , A. F. Basharova

Abstract

We propose algorithms for processing signals obtained by the multiple shadow method using Rayleigh waves propagating in the direction of the pipe envelope and electromagnetic-acoustic emission-reception technique. The results of studying the method susceptibility to artificial and natural surface and near-surface defects of workpieces intended for the production of drill pipes in two-frequency ranges are presented. The multiple detection coefficient and the probabilistic characteristics of variance, asymmetry, and kurtosis are proposed to be used as informative parameters in analyzing the series of multiple signal passes. The rejection criteria are substantiated. The research results can be used in the development of automated units and methods for monitoring small-diameter pipes.



中文翻译:

电磁声多阴影法在瑞利波检验油井管产品中的敏感性

摘要

我们提出了使用在管道包络线方向传播的瑞利波和电磁声发射接收技术处理通过多重阴影方法获得的信号的算法。给出了研究方法的结果,该方法对打算在两个频率范围内生产钻杆的工件的人工和自然表面及近表面缺陷的敏感性。提出了多重检测系数以及方差,不对称和峰度的概率特征,作为分析多个信号传递序列的信息参数。拒绝标准得到证实。研究结果可用于自动装置和小直径管道监控方法的开发。

更新日期:2021-02-19
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