基于PVDF压电薄膜传感器的超声检测试验
Ultrasonic Testing Experiment Based on the PVDF Piezoelectric Film Sensor
摘 要
基于PVDF聚偏氟乙烯压电薄膜传感器进行了超声检测方法研究。首先详细介绍了PVDF压电薄膜传感器的传感机理和组成，并根据检测信号的特点设计了信号调理电路；其次利用超声波探伤仪和PVDF压电薄膜传感器搭建了超声无损检测系统；最后，利用检测系统对铝试件进行了检测，验证了该检测方法的可行性。试验结果表明，该检测方法得到的检测信号信噪比高，能够准确定位试件内部的缺陷，适用于缺陷检测。
PVDF压电薄膜
内部缺陷
Ultrasonic testing
PVDF piezoelectric film
Internal flaw
Abstract
The ultrasonic nondestructive testing method based on the PVDF piezoelectric film sensor was introduced. Firstly, the mechanism and element of the PVDF piezoelectric film sensor were illuminated in detail, and the signal processing circuit was designed according to the signal feature. Secondly, the ultrasonic nondestructive testing system based on the ultrasonoscope and PVDF piezoelectric film sensor was built. At last, the method was verified through the detection of aluminum specimen. The results show that the detection signal through the method has a high SNR, and it can locate the internal flaw of specimen exactly, and is suitable for flaw detection.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2011/3/25
修改稿日期
网络出版日期
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备注樊程广(1985-)，男，博士研究生，主要研究方向为超声无损检测。
引用该论文: FAN ChengGuang,PAN MengChun,LUO FeiLu,LUO ShiTu,TAN XiangLin. Ultrasonic Testing Experiment Based on the PVDF Piezoelectric Film Sensor[J]. Nondestructive Testing, 2012, 34(1): 27～30
樊程广,潘孟春,罗飞路,罗诗途,谭项林. 基于PVDF压电薄膜传感器的超声检测试验[J]. 无损检测, 2012, 34(1): 27～30
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参考文献
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【3】罗雄彪，陈铁群.超声无损检测的发展趋势［J］.无损探伤,2004,28(3):1-5.
【4】Siivola J. New noninvasive piezoelectric transducer for recording of respiration, heart rate and body movements［J］. Medical and Biological Engineering and Computeing,1989(27):423-424.
【5】Gerald R Harris, Roy C Preston, Aime S DeReggi. The impact of piezoelectric PVDF on medical ultrasound exposure measurements, standards, and regulations［J］. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control,2000,47(6):1321-1335.
【6】Audrain P, Masson P, Berry A. The use of PVDF strain sensing in active control of structural intensity in beams［J］. Journal of Intelligent Material Systems and Structures,2004,15(5):319-327.
【7】Yi Lu, Xin Wang, Jiong Tang. Robust decision making in damage detection using piezoelectric transducers and lamb wave propagation［J］. Proc of SPIE,2007(6529):652906116.
【8】王代华，黄尚廉.PVDF振动参数监测传感理论与实验研究［J］.传感技术学报,1999(4):250-255.
【9】具典淑，周智，欧进萍.基于PVDF的金属构件裂纹监测研究［J］.压电与声光,2004,26(3):245-248.
【10】杜颜良，宋颖，孙宝臣.PVDF压电薄膜结构监测传感器应用研究［J］.石家庄铁道学院学报,2006,19(1):1-4.
【11】Kawai H. The piezoelectricity of Polyvinylidene fluoride［J］. Jap J Appl Phys,1969(8):975-976.
【12】张华，张桂芳.压电和热释电聚合物PVDF及其应用［J］.天津工业大学学报,2002,22(1):35-39.
【13】赵东升.PVDF压电薄膜传感器的制作研究［J］.传感器世界,2006(9):19-21.
【14】Rathod V T, Roy D M, Anjana J, et al. Characterization of a largearea PVDF thin film for electromechanical and ultrasonic sensing applications［J］. Sensors and Actuators A: Physical,2010(163):164-171.
【15】具典淑，周智，欧进萍.PVDF压电薄膜的应变传感特性研究［J］.功能材料,2004,35(4):450-452.
【16】叶湘滨，熊飞丽，张文娜，等.传感器与测试技术［M］.北京：国防工业出版社,2007:179-180.
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