Quantitative estimation to circular holes in steel for non-destructive testing using ultrasonic phased array

2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2015-10-01 DOI:10.1109/SPAWDA.2015.7364473

Wen-han Lv, Xianmei Wu, Di Zhang, Yun-fei Ye

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引用次数: 1

Abstract

This paper studied how to quantify circular hole in steel with ultrasonic phased array technology. Ultrasonic pulses emitted from array elements will be reflected by defects, cracks or something else. The echo signals will carry the information of the reflector. When the reflector is a circular hole, two echoes will be received. From the two echoes we may obtain the size of the circular hole. We used the difference of the two signals' sound path to estimate the size of a series of circular holes with different diameters in steel. The experimental results for circular holes in steel showed that the size of these holes could be obtained with an error within 0.1mm by this quantitative method. The minimum hole with diameter 0.5mm in the sample could also be quantitatively estimated. Finite element method was used to simulate the ultrasonic pulses propagation in order to quantify defects better. The results of the simulation agreed well with the experiments, which was very valuable for further study in quantifying defects using ultrasonic phased array.

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超声相控阵无损检测钢中圆孔的定量估计

本文研究了利用超声相控阵技术定量测量钢的圆孔。从阵列元件发出的超声波脉冲会被缺陷、裂缝或其他东西反射。回声信号将携带反射器的信息。当反射器为圆孔时，将接收到两个回波。从这两个回波我们可以得到圆孔的大小。我们利用两种信号声路的差异来估计一系列不同直径的钢圆孔的尺寸。对钢中圆孔的实验结果表明，该定量方法可以得到圆孔的尺寸，误差在0.1mm以内。还可以定量估计样品中直径0.5mm的最小孔。为了更好地量化缺陷，采用有限元方法模拟超声脉冲的传播。仿真结果与实验结果吻合较好，为超声相控阵缺陷定量研究提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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