A small 2D ultrasonic array for NDT applications

被引：25
作者：
Martínez, O
Akhnak, M
Ullate, LG
de Espinosa, FM
机构：
[1] CSIC, Inst Automat Ind, Ctr Campo Real, Madrid 28500, Spain
[2] CSIC, Inst Acust, E-28006 Madrid, Spain
来源：
NDT & E INTERNATIONAL | 2003年 / 36卷 / 01期
关键词：
3D ultrasonic imaging; 2D segmented annular array; volumetric NDE;
D O I：
10.1016/S0963-8695(02)00072-5
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A prototype of two-dimensional transducer array with reduced number of elements, based on segmented annular distribution is presented. The capability of this array to produce volumetric imaging is compared to the equivalent conventional 2D squared matrix array. The comparison between both apertures is made for the cases of the full-array emission/reception mode and SAFT mode. From the analysis it is deduced that the segmented annular arrays produce lower grating lobes than squared arrays, improving the image contrast. The fabrication process of a segmented annular array of 64 elements and the experimental work made with this array transducer is also presented in this paper. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：57 / 63
页数：7
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