文章摘要信息 关键词 ： 叶轮 叶根 相控阵超声 缺陷检测 [gap=877]Keywords : impeller;blade root;phased array ultrasonic;defect testing
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phased array ultrasonic testing 相控阵超声检测
Linear phased array ultrasonic transducer 相控线阵超声换能器
array-phased ultrasonic 超声相控阵
ultrasonic phased array probes 超声相控阵探头
ultrasonic phased array technique 超声相控阵技术
ultrasonic phased array technology 超声相控阵技术
Also, the system composing of phased array ultrasonic imaging and its key technique are given, which set base for underwater ultrasonic imaging in theory.
还提出了相控阵超声成像的系统构成以及其中应用的关键技术指标，为水下超声成像的研究奠定了理论基础。
Preliminary test and study showed that phased array ultrasonic system was better in signal-to-noise ratio, more sensitive to defects, wider in testing range and higher in working efficiency...
初步试验和研究表明，相控阵超声无损检测系统比传统单探头超声无损检测具有信噪比高、缺陷分辨力强、有效探伤范围宽以及工作效率高等特点。
Digital beam forming (DBF) is special for phased array ultrasonic transducer compared to other ultrasonic nondestructive testing and is also the kernel technology of the whole signal-receiving system.
数字波束合成技术是相控阵超声检测相对于其它超声检测所特有的，也是整个信号接收处理系统的核心技术。
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