针对一维线性传感器阵列的盲区问题,研究了基于梅花阵列的二维多重信号分类(2D-MUSIC)冲击定位方法.梅花阵列的布置方式是在圆心处布置1个PZT传感器,另外在半径为R的圆周上均匀布置M个PZT传感器,首先联合冲击信号传播到参考阵元PZT0和第1个接收阵元PZT1的时间信息估计冲击信号的Lamb波传播波速;然后利用近场2D-MUSIC算法实现冲击源的距离和角度的同时定位;最后,在玻璃纤维复合材料层合板中进行了冲击定位方法的验证.实验结果表明:基于梅花阵列的方法能够对0°～360°的冲击源进行精确地定位,定位结果精度较高,其中最大距离误差为2.2 cm,最大角度误差为5°.
参考文献
| [1] | Agrawal S;Singh K K;Sarkar P K.Impact damage on fibrereinforced polymer matrix composite-A review[J].Journal of Composite Materials,201448(03):317-332. |
| [2] | Liu Y T;Chattopadhyay A.Low-velocity impact damage monitoring of a sandwich composite wing[J].Journal of Intelligent Material Systems and Structures,201324(17):2074-2083. |
| [3] | 袁慎芳.结构健康监控[M].北京:国防工业出版社,2007:1-4. |
| [4] | Giurgiutiu V.Structural health monitoring with piezoelectric wafer active sensors[M].Salt Lake City:Academic Press,2007:508-509. |
| [5] | Purekar A S;Pines D J;Sundararaman S.Directional piezoelectric phased array filters for detecting damage in isotropic plates[J].Smart Materials and Structures,200413(04):838-850. |
| [6] | 苏永振;袁慎芳;王瑜.基于多重信号分类算法的复合材料冲击定位[J].复合材料学报,201027(03):105-110. |
| [7] | 钟永腾;袁慎芳.基于MUSIC算法的复合材料近场冲击定位[J].复合材料学报,201330(02):189-194. |
| [8] | Engholm M;Stepinski T.Direction of arrival estimation of Lamb waves using circular arrays[J].Structural Health Monitoring,201010(05):467-480. |
| [9] | Qiu L;Yuan S F;Wang Q.Design and experimental research of a PZT network based structural health monitoring scanning system[J].Chinese Journal of Aeronautics,200922(05):505-512. |
| [10] | Jeong H.Analysis of plate wave propagation in anisotropic laminates using a wavelet transform[J].NDT & E International,200134(31):185-190. |
| [11] | 王永良;陈辉;彭应宁.空间谱估计理论与算法[M].北京:清华大学出版社,2004:38-39. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%