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| 论文题目 |
凹面线性相控阵聚焦与扫描成像 |
| 论文题目（英文） |
Ultrasonic focusing and imaging by a concave linear phased array |
| 作者 |
王文龙 |
| 发表年度 |
2008 |
| 卷 |
33 |
| 期 |
2 |
| 页码 |
164－170 |
| 期刊名称 |
声学学报 |
| 摘要 |
研究了凹面线性相控阵聚焦声场的聚焦特性与扫描成像处理，首先对凹面线性相控阵聚焦声场进行了深入的分析，对凹面线阵聚焦中变迹处理、阵元间距及，数等参数对相控阵瞬态声场聚焦特性的影响进行了分析和讨论；然后，分析了相控阵聚焦声场在散射物体上产生的散射声场特性，得到了利用凹面线性相控阵进行线性查扫的B扫图像，在此基础上，利用凹面线性相控阵辐射声场在非均匀体上的散射声场进行了扫描成像研究和处理，针对实际管材质量的相控阵检测问题，得到了管材纵波扫描整个区域的检测图像．
PACS数： 43．20，43．60，43．35 |
| 摘要_英文 |
The focusing characteristics and imaging processing of the ultronic focllsedeld excited by a conc a_ve linear Phed array are studied．Atrt，the phed focedeld radiated by the concave linear phased array i8 investigated．The inuence of odization，interelement spacing，，number and other parameters on the transienteld excited by the concave linear phased array is analyzed in detail． Then，the scatteringeld of the phed focusing 6eld on an inhomogene object is also studied． The B-scan imaging of the linear 8can is obtained by the concave linear phased array．Next，the imaging processing is cried out by the scattering 6eld on the imlomogeneolls object．The inspection imaging is also in№stigated and obtained for the tube inspection by the compressional waⅣe scanning． |
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