PVDF梳状传感器及在超声导波检测中的应用  

PVDF Comb Transducer for Controlling Guided Wave Mode and Application in Inspection

作　　者：何存富[1] 葛海燕[1] 焦敬品[1] 吴斌[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100022

出　　处：《无损检测》2007年第1期32-35,共4页Nondestructive Testing

基　　金：国家自然科学基金项目(10272007;10372009;60404017);北京市自然科学基金项目(4052008);北京市教委资助项目(KZ200510005004;KM200310005012;KM200410005003)

摘　　要：为了减少多模态现象对超声导波检测的影响,设计制作了偏聚氟乙烯(PVDF)梳状传感器,在薄钢板中进行超声导波检测试验研究。结果表明,这种传感器可以实现单一模态超声导波的激励与接收,并可实现薄钢板表面污物的检测。In order to avoid the presence of several guided wave modes at particular frequencies, the process of designing and fabricating PVDF comb transducer was discussed in detail. Experiments were conducted with a PVDF comb transducer mounted on a thin steel plate. The results showed that a single guided wave mode was achieved by a PVDF comb transducer in a controlled frequency. The application of PVDF comb transducer in fouling detection on the thin steel plate was also discussed.

关 键 词：超声导波 PVDF 梳状传感器 污物检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]