| 小波分析在飞机复合材料结构智能敲击检测中的应用研究 |
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| 引用本文： | 冯康军,李艳军.小波分析在飞机复合材料结构智能敲击检测中的应用研究[J].飞机设计,2010,30(5):20-22,67. |
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| 作者姓名： | 冯康军 李艳军 |
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| 作者单位： | 南京航空航天大学,民航学院,江苏,南京,210016 |
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| 摘 要： | 介绍了一种民用飞机复合材料智能敲击检测系统的设计原理。在MATLAB环境下对敲击信号进行小波分解和去噪,通过对比选取不同的小波函数和阈值时得到的去噪结果,选取最优的小波函数和阈值进行分解和去噪,获得了较好的信号波形,验证了智能敲击检测系统对分层和裂纹两类复合材料主要损伤的辨识能力,同时提高了智能敲击检测系统的精度。
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| 关 键 词： | 飞机 复合材料结构 敲击检测 小波分析 |
The Applied Research of Wavelet Analysis on Intelligent Coin-tap Test System of Airplane Composite Structure |
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| FENG Kang-jun,LI Yan-jun.The Applied Research of Wavelet Analysis on Intelligent Coin-tap Test System of Airplane Composite Structure[J].Aircraft Design,2010,30(5):20-22,67. |
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| Authors: | FENG Kang-jun LI Yan-jun |
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| Institution: | FENG Kang-jun,LI Yan-jun(College of Civil Aviation,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China) |
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| Abstract: | This paper introduces design principle of an intelligent coin-tap test system of aircraft composite structure.We use wavelet decomposition and de-noising to process Coin-tap signals under the environment of MATLAB,contrast the result of different wavelet functions and threshold values,select the best wavelet function and threshold value to process the Coin-tap signals,and get the better signal waveform,Which.validate the distinguish function of the Intelligent Coin-tap Test System to lamination and crack of... |
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| Keywords: | aircraft composite structure intelligent coin-tap test wavelet analysis |
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