| 基于含金属芯压电纤维与Lamb波的结构损伤定位研究 |
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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波的结构损伤定位研究[J].振动与冲击,2011,30(4):16-20. |
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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，江苏 南京 210016 |
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| 摘 要： | 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 |
| 收稿时间： | 2010-2-11 |
| 修稿时间： | 2010-3-8 |
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):16-20. |
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| Authors: | LIU Jian QIU Jin-hao CHANG Wei-jie JI Hong-li ZHU Kong-jun |
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| Affiliation: | The Aeronautic Key Laboratory for Smart Materials & Structures, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, China |
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| Abstract: | Abstract：MPF (Metal-core Piezoelectric Ceramic Fiber) is a new type piezoelectric ceramic device. The configuration and its response to Lamb-wave fields excited by circular crested actuator are presented in this paper. According to calculating time delays of damage signals with Gabor wavelet transform, MPF sensing single-mode Lamb waves in one-dimensional structural damage localization is investigated. Results show that MPF can be used as the sensor for single mode Lamb wave. The performance of calculating of time delays of damage signals using Gabor wavelet transform is good; the damage localization accuracy is also high. |
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| Keywords: | Metal-core Piezoelectric Ceramic Fiber Lamb wave single mode Gabor wavelet structural health monitoring |
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