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中文摘要：
电磁的超声在粘合剂的接口的察觉被使用在由传统的压电的变换器的超声的测试解决不稳定的联合问题的多层的结构。从变换器的相互的电感基于电磁的超声精力和结果的死了的地区的转变机制的分析，由取消方法的软阀值、适应的噪音过滤的小浪同时被使用到检测电磁的超声的信号克服低信号的缺点到噪音比率( SNR )和变换器的宽内在的死了的地区。当取消的适应噪音有效地缩小死了的地区时，在钢和橡胶材料的三件分层的粘合剂样品的接口察觉的处理结果证明过滤的小浪关于 12dB 提高 SNR。
英文摘要：
The electromagnetic ultrasound is used in the detection of interfaces of the adhesive multilayer structures to solve the unstable coupling problem in ultrasonic testing by traditional piezoelectric transducers. Based on the analysis of the transforming mechanism of electromag-netic ultrasound energy and the resultant dead zone from mutual inductance of the transducer, the wavelet filtering by soft-thresholding and adaptive noise canceling methods are used simul-taneously to the detected electromagnetic ultrasonic signals to overcome the drawbacks of the low signal to noise ratio （SNR） and the wide intrinsic dead zone of the transducer. Processed results in the interface detection of a three layered adhesive sample of steel and rubber materials demonstrate that the wavelet filtering enhances the SNR about 12dB while the adaptive noise canceling narrows the dead zone effectively.
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