Pattern recognition in the ultrasonic imaging of reverberant multilayered structures
Pattern recognition in the ultrasonic imaging of reverberant multilayered structures
复制标题
混响多层结构超声成像中的模式识别
DOI：
10.1109/58.16972
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
D. Nagle
中科院分区：
文献类型：
--
作者：
J. Saniie;D. Nagle
通常，在多层结构的超声脉冲回波成像中混响的存在妨碍了每层的直接表征。混响模式由层的完整性控制，这些层的恶化可能会产生复杂和不可预测的模式。混响模式的分类，使用正常和独特的角度扫描计划的分析模型。理论模型已被用于一个特定的多层混响环境中存在的检测在干发电机管在核电站中使用的腐蚀和/或挥发性变化的实验研究。可以识别出与理论预测非常一致的各种混响模式。<<ETX>>
Often the existence of reverberations in the ultrasonic pulse-echo imaging of multilayered structure prevents the direct characterization of each layer. The reverberating pattern is governed by the integrity of the layers, and deterioration of these layers can generate complex and unpredictable patterns. Analytical models for the classification of reverberant patterns using both normal and unique angle scanning schemes are presented. The theoretical model has been utilized in the experimental studies of a particular multilayered reverberant environment that exists in the detection of corrosion and/or volatile changes in stem generator tubing used in nuclear power plants. Various reverberant patterns can be recognized that are in close agreement with theoretical predictions.<<ETX>>