Damage Localization of Offshore Platform Based on the Virtual Impulse Response Function

Abstract:

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Because the ambient excitation is difficult to test, it is necessary to study the damage detection method only with structure responses. In this paper, two node structure responses under white noise are used to calculate the virtual impulse response function, the amplitude of the virtual impulse response function is decomposed by wavelet packet to calculate the node energy. The wavelet packet node energy change pre and post damage is used as the damage characteristic vector, and the pattern classification function of BP neural network is employed to determine the structure damage location. The numerical simulation and model experiment results of the offshore platform show the effectives of the method, whereas which is easy to be influenced by the noises.

Info:

Periodical:

Advanced Materials Research (Volumes 368-373)

Edited by:

Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren

Pages:

1676-1680

DOI:

10.4028/www.scientific.net/AMR.368-373.1676

Citation:

Y. S. Diao et al., "Damage Localization of Offshore Platform Based on the Virtual Impulse Response Function", Advanced Materials Research, Vols. 368-373, pp. 1676-1680, 2012

Online since:

October 2011

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Price:

$35.00

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