| 压电阵列星形布置与多路损伤扫查策略 |
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| 引用本文： | 余振华,袁慎芳,彭鸽.压电阵列星形布置与多路损伤扫查策略[J].传感器与微系统,2007,26(11):117-120. |
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| 作者姓名： | 余振华 袁慎芳 彭鸽 |
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| 作者单位： | 南京航空航天大学,航空宇航学院,江苏,南京,210016 |
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| 基金项目： | 国家自然科学基金
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国家自然科学基金国际合作重大计划 |
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| 摘 要： | 针对复合材料结构的损伤主动监测进行研究。采用主动Lamb波和小波变换计算损伤散射信号的时间延迟,根据椭圆定位法进行损伤定位;提出压电传感器星形布置的优化布置方法,结合多路扫查,解决椭圆定位法的损伤监测盲区,从而扩大损伤监测范围、提高损伤判别的准确性,并能进行损伤程度的判别。通过实验系统验证了所提出方法的有效性。
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| 关 键 词： | 结构健康监测 主动Lamb波监测 椭圆定位法 损伤辨识 优化布置 |
| 文章编号： | 1000-9787（2007）11-0117-04 |
| 修稿时间： | 2007-06-04 |
Collocation of piezoelectric sensor array with star topology form and multi-path scanning strategy for damage |
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| YU Zhen-hua,YUAN Shen-fang,PENG Ge.Collocation of piezoelectric sensor array with star topology form and multi-path scanning strategy for damage[J].Transducer and Microsystem Technology,2007,26(11):117-120. |
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| Authors: | YU Zhen-hua YUAN Shen-fang PENG Ge |
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| Affiliation: | College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | Active damage detection of composite structure is discussed. By calculating the arrival time diiterence of the disperse signal aroused by damage using active lamb wave and wavelet transform, damage position can be detected according to ellipse localization method. To overcome the dead area of detection by ellipse localization method,optimization collocation of piezoelectric sensors with star topology form is proposed with multi-path scanning ,which widened the range of monitoring and improved the accuracy of damage identification. To some extent,the damage area also can be determined. The experiment of damage localization confirmes the advantages. |
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| Keywords: | structure health monitoring active Lamb wave detection ellipse localization method damage identification optimization collocation |
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