Noise Analysis for Sensitivity Based Structural Damage Detection

YIN Tao; ZHU Hong-ping; YU Ling

Article Contents

Article Navigation > Applied Mathematics and Mechanics > 2007 > 28(6): 659-667

YIN Tao, ZHU Hong-ping, YU Ling. Noise Analysis for Sensitivity Based Structural Damage Detection[J]. Applied Mathematics and Mechanics, 2007, 28(6): 659-667.

Citation:

YIN Tao, ZHU Hong-ping, YU Ling. Noise Analysis for Sensitivity Based Structural Damage Detection[J]. Applied Mathematics and Mechanics, 2007, 28(6): 659-667.

Citation:

YIN Tao, ZHU Hong-ping, YU Ling. Noise Analysis for Sensitivity Based Structural Damage Detection[J]. Applied Mathematics and Mechanics, 2007, 28(6): 659-667.

PDF( 629 KB)

Noise Analysis for Sensitivity Based Structural Damage Detection

YIN Tao^1-3,
ZHU Hong-ping^1,2,
YU Ling^1,3

1.
School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;
Hubei Key Laboratory of Control Structures, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;

Received Date: 2005-11-14
Rev Recd Date: 2007-05-09
Publish Date: 2007-06-15

Abstract

Abstract

As vibration-based structural damage detection methods are easily affected by the environmental noise,a newly statistic-based noise analysis method was proposed together with Monte Carlo technique to investigate the influence of experimental noise of modal data on sensitivity-based damage detection methods.Different from the commonly used random perturbation technique,the proposed technique is deduced directly by Moore-Penrose generalized inverse of the sensitivity matrix,which does not only make the analysis process more efficient but also can analyze the influence of noise on both frequencies and mode shapes for three commonly used sensitivity-based damage detection methods in a similar way.A one-story portal frame is adopted to evaluate the efficiency of the proposed noise analysis technique.
- damage detection,
- statistic-based noise analysis,
- Monte Carlo technique,
- perturbationtechnique

FullText(HTML)

References(8)

References

[1]	Cawley P, Adams R D. The location of defects in structures from measurements of natural frequencies[J].Journal of Strain Analysis,1979,14(2):49-57. doi: 10.1243/03093247V142049
[2]	Stubbs N, Kim J T.Damage localization in structures without baseline modal parameters[J].AIAA J,1996,34(8):1649-1654.
[3]	鞠彦忠, 张增军, 陈景彦,等.基于柔度法的结构损伤识别[J].东北电力学院学报,2004,24(1):47-50.
[4]	Zhao J, Dewolf J T. Sensitivity study for vibrational parameters used in damage detection[J].Journal of Structural Engineering, ASCE,1999,125(4):410-416. doi: 10.1061/(ASCE)0733-9445(1999)125:4(410)
[5]	Papadopoulos L, Garcia E. Structural damage identification: a probabilistic approach[J].American Institute of Aeronautics and Astronautics Journal,1998,36(11)：2137-2145.
[6]	Xia Y, Hao H.Statistical damage identification of structures with frequency changes[J].Journal of Sound and Vibration,2003,263(4):853-870. doi: 10.1016/S0022-460X(02)01077-5
[7]	Fox R L, Kapoor M P.Rates of change of eigenvalues and eigenvectors[J].AIAA J,1968,6(12):2426-2429. doi: 10.2514/3.5008
[8]	Hao H, Xia Y. Vibration-based damage detection of structures by genetic algorithm[J].Journal of Computing in Civil Engineering,2002,16(3):222-229. doi: 10.1061/(ASCE)0887-3801(2002)16:3(222)