| 飞机加筋壁板紧固件松脱损伤检测的自相关分析方法 |
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| 引用本文： | 杨智春,张慕宇,王乐.飞机加筋壁板紧固件松脱损伤检测的自相关分析方法[J].振动与冲击,2011,30(11):13-16. |
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| 作者姓名： | 杨智春 张慕宇 王乐 |
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| 作者单位： | 西北工业大学航空学院，西安710072 |
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| 基金项目： | 航空科学基金，高等学校学科创新引智计划 |
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| 摘 要： | 提出了一种基于自相关函数的损伤检测方法。首先证明归一化后的结构各测点加速度响应自相关函数零点值仅与结构的模态参数有关，然后利用其构造损伤指标用于结构损伤的定位。飞机加筋壁板紧固件松脱损伤的损伤检测实验表明，该方法只需要利用结构在一定带宽白噪声激励下的加速度响应就能准确定位加筋壁板紧固件的松脱损伤，适用于紧固件松脱损伤的实时检测。
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| 关 键 词： | 自相关函数 损伤检测 实时检测 加筋壁板 紧固件松脱 |
| 收稿时间： | 2010-5-26 |
| 修稿时间： | 2010-7-6 |
Damage detection of fastener loosening of aircraft stiffened panel by auto correlation analysis |
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| YANG Zhi-chun,ZHANG Mu-yu,WANG Le.Damage detection of fastener loosening of aircraft stiffened panel by auto correlation analysis[J].Journal of Vibration and Shock,2011,30(11):13-16. |
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| Authors: | YANG Zhi-chun ZHANG Mu-yu WANG Le |
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| Affiliation: | School of Aeronautics, Northwestern Polytechnical University, Xi’an, 710072 |
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| Abstract: | An approach to detect structural damage using auto correlation function was proposed.It was theoretically proved that the value of normalized auto correlation function of acceleration response at zero point of time axis depends only on the modal parameters of the structure,which is used to get the damage index to then locate the damage.The feasibility and the effectiveness of the proposed method were verified by damage detection experiments for the fastener loosening of aircraft stiffened panel under white ... |
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| Keywords: | auto correlation function damage detection real time detection stiffened panel fastener loosening |
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