Post-processing of the full matrix of ultrasonic transmit-receive array data for non-destructive evaluation
Post-processing of the full matrix of ultrasonic transmit-receive array data for non-destructive evaluation
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DOI：
10.1016/j.ndteint.2005.04.002
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发表时间：
2005-12-01
影响因子：
4.2
通讯作者：
Wilcox, PD
中科院分区：
文献类型：
--
作者：
Holmes, C;Drinkwater, BW;Wilcox, PD
超声波阵列数据的处理传统上基于并行传输电路，该电路使发射元件的交错发射能够产生所需的波前。本文描述了一种替代方法，其中从每个收发对捕获时域信号的完整矩阵并进行后处理。对各种后处理方法进行了建模，并根据其对点状反射器成像的能力进行了评估。实验结果与模型结果有很好的定量一致性。还实现了一种先进的处理算法，该算法允许阵列在发射和接收中聚焦在目标区域的每个点上。这种方法为NDE提供了显著的性能优势。(c) 2005 Elsevier Ltd版权所有。
Processing of ultrasonic array data is traditionally based on having parallel transmission circuits that enable staggered firing of transmitter elements to produce the desired wavefront. This paper describes an alternative approach in which the full matrix of time domain signals from every transmitter-receiver pair is captured and post-processed. Various post-processing approaches are modelled and assessed in terms of their ability to image a point-like reflector. Experimental results are then presented which show good quantitative agreement with the modelled results. An advanced processing algorithm is also implemented which allows the array to be focused at every point in the target region in both transmission and reception. This approach is shown to offer significant performance advantages for NDE. (c) 2005 Elsevier Ltd. All rights reserved.