Structural Safety Alarming Based on Signal Energy by Using Wavelet Packet Transform

Zeng Guo Jiang; Bo Chen

doi:10.4028/www.scientific.net/AMM.166-169.1097

Paper Titles

Identification Method Research of the Compressed Beam Elastic Buckling Load
p.1076

Experimental Study on Flexural and Fatigue Property of Steel Fiber Reinforced Prestressed Concrete Slab
p.1083

Study on Explosion Resistance Performance of Injected Fluid Structure
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Research on Signal Transmission Property of Wireless Sensor Networks for Test System
p.1091

Structural Safety Alarming Based on Signal Energy by Using Wavelet Packet Transform
p.1097

Performance Degradation Assessment of a Beam Structure by Using Wavelet Packet Energy
p.1102

Investigation into the Elastic-Plastic Ultimate Load-Carrying Capacity of Suspen-Dome
p.1108

Study of Hybrid Method on Beam Crack Evaluation
p.1113

Analysis of Steel Braced Frame Structure Response Encountered Higher Seismic Intensity
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 166-169Structural Safety Alarming Based on Signal Energy...

Structural Safety Alarming Based on Signal Energy by Using Wavelet Packet Transform

Abstract:

The structural safety alarming based on signal energy is carried out in this study with the aiding of wavelet packet transform (WPT). The structural dynamic responses are computed by using Newmark-beta algorithm and then decomposed to obtain the signal energy distribution at different levels. A damage detection approach based on signal energy by using wavelet packet transform is developed in this study to detect the damage event of a simply-supported beam. A WPT component energy (WPCE) index is proposed to construct the damage vectors for damage identification. A beam structure is taken as an example to examine the feasibility and validity of the proposed approach. The results from this study demonstrate that the detection approach proposed can accurately identify the damage event in the structure.

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Periodical:

Applied Mechanics and Materials (Volumes 166-169)

Pages:

1097-1101

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.166-169.1097

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Online since:

May 2012

Authors:

Zeng Guo Jiang, Bo Chen

Keywords:

Curvature Vector, Signal Energy, Slope Vector, Wavelet Packet Transform

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References

[1] B. Chen, Y.L. Xu, W.L. Qu: Corrosion damage assessment and monitoring of large steel space structures. Frontiers of Architecture and Civil Engineering in China, 2010, 4(3): pp.354-369.

DOI: 10.1007/s11709-010-0088-0

Google Scholar

[2] Z. Hou, M. Noori, R.S. Amand: Wavelet-based approach for structural damage detection, Journal of Engineering Mechanics, ASCE, 2000, 126(7), pp.677-683.

DOI: 10.1061/(asce)0733-9399(2000)126:7(677)

Google Scholar

[3] H. Sohn, A. N. Robertson, C. R. Farrar: Holder exponent analysis for discontinuity detection, Journal of Structural Engineering and Mechanics ASCE, 2004, 17 (3-4), pp.409-428.

DOI: 10.12989/sem.2004.17.3_4.409

Google Scholar

[4] B. Chen, Y.L.Xu: A new damage index for detecting sudden change of structural stiffness, International Journal of Structural Engineering and Mechanics, 2007, 26(3): pp.315-341.

DOI: 10.12989/sem.2007.26.3.315

Google Scholar

[5] J. Zheng, B. Chen, C.Y.Ye: Damage detection of steel domes subjected to earthquakes by using wavelet transform. Advanced Materials Research, 2011, 150-151: pp.1580-1583.

DOI: 10.4028/www.scientific.net/amr.150-151.1580

Google Scholar