| 基于含金属芯压电纤维与Lamb波的一维结构损伤定位研究 |
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| 引用本文： | 刘建,裘进浩,常伟杰,季宏丽,朱孔军. 基于含金属芯压电纤维与Lamb波的一维结构损伤定位研究[J]. 振动与冲击, 2011, 30(4) |
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| 作者姓名： | 刘建 裘进浩 常伟杰 季宏丽 朱孔军 |
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| 作者单位： | 南京航空航天大学智能材料与结构航空科技重点实验室,南京,210016 |
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| 基金项目： | 国家"863"高技术计划项目，国家自然科学基金重点项目，教育部长江学者创新团队项目 |
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| 摘 要： | 含金属芯压电纤维(Metal-core Piezoelectric Ceramic Fiber,MPF)是一种新型压电功能器件.介绍了MPF的结构及其对圆形压电片激励Lamb波的传感响应模型.利用Gabor小波变换计算损伤反射信号到达时间延迟的原理,把MPF传感单一模式Lamb波在一维结构中进行了损伤定位研究.研究结果表明:MPF可以进行Lamb波的单一模式传感,采用Gabor小波变换计算损伤反射信号到达时间延迟效果较好,损伤定位精度较高.
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| 关 键 词： | 含金属芯压电纤维 Lamb波 单一模式 Gabor小波 结构健康监测 |
Damage Localization Based On metal-core piezoelectric ceramic fiber and Lamb wave |
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| LIU Jian,QIU Jin-hao,CHANG Wei-jie,JI Hong-li,ZHU Kong-jun. Damage Localization Based On metal-core piezoelectric ceramic fiber and Lamb wave[J]. Journal of Vibration and Shock, 2011, 30(4) |
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| Authors: | LIU Jian QIU Jin-hao CHANG Wei-jie JI Hong-li ZHU Kong-jun |
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| Affiliation: | LIU Jian,QIU Jin-hao,CHANG Wei-jie,JI Hong-li,ZHU Kong-jun(Aeronautic Key Laboratory for Smart Materials & Structures,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China) |
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| Abstract: | Metal-core piezoelectric ceramic fiber(MPF) is a new type piezoelectric ceramic device.Its configuration and response to Lamb wave fields excited by a circular crested actuator were presented here.According to calculating time delays of damage signals with Gabor wavelet transformation,MPF sensing single-mode Lamb waves to be used in one-dimensional structural damage localization was investigated.Results showed that MPF can be used as a sensor for single mode Lamb wave;its performance of calculating time del... |
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| Keywords: | metal-core piezoelectric ceramic fiber(MPF) lamb wave single mode gabor wavelet structural health monitoring |
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