Excavation Damaged Zone(EDZ)scope is important for optimizing excavation and support schemes in deep underground caverns......

An ultrasonic test of spot welding for stainless steel is conducted. Based on wavelet packet decomposition, the ultrason......

使用X射线实时成像系统和超声波检测方法对两种GIS（Gas Insulated Switchgear）简体环焊缝进行了检测，比较了两种方法的检测结果，分析了......

叙述了用声-超声进行复合材料危害性缺陷无损评价的研究。认为，声-超声信号在试样厚度上产生纵波共振，使得频谱能量集中在某些频率点......