Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy
Vibration responses of building structure closely related to the structural health status. In this paper, wavelet singular spectrum entropy (WSSE) is proposed to evaluate the damage condition of building structure. A 1/3 scaled model of a Chinese ancient timber structure has been constructed, and th...
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2018-01-01
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Series: | Mathematical Problems in Engineering |
Online Access: | http://dx.doi.org/10.1155/2018/4898903 |
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doaj-51fe23b7b7064141a5733e2960499ff02020-11-25T00:52:59ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472018-01-01201810.1155/2018/48989034898903Damage Identification in Timber Structures Based on Wavelet Singular Spectrum EntropyShengcai Li0Lei Zhang1Jie Tang2Daijian Ling3Peixuan Wang4School of Architectural Science and Civil Engineering, Yangzhou University, 225127, ChinaSchool of Architectural Science and Civil Engineering, Yangzhou University, 225127, ChinaSchool of Architectural Science and Civil Engineering, Yangzhou University, 225127, ChinaSchool of Architectural Science and Civil Engineering, Yangzhou University, 225127, ChinaSchool of Architectural Science and Civil Engineering, Yangzhou University, 225127, ChinaVibration responses of building structure closely related to the structural health status. In this paper, wavelet singular spectrum entropy (WSSE) is proposed to evaluate the damage condition of building structure. A 1/3 scaled model of a Chinese ancient timber structure has been constructed, and three damage conditions and one restored condition of the structure are simulated. The acceleration responses for undamaged and the four simulated damaged and restored conditions are measured and analyzed by employing WSSE to identify the location at which the structure has incurred damage. Results show that (1) the relative variation rate of WSSE for the damaged position changes significantly; (2) the relative variation rate of WSSE of the point that is damaged more severely would become higher; and (3) signals of North-South and East-West directions are required for further identification. Moreover, a finite element modeling analysis of the timber structure under different damage conditions is performed, and the results verify the applicability of the method proposed.http://dx.doi.org/10.1155/2018/4898903 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shengcai Li Lei Zhang Jie Tang Daijian Ling Peixuan Wang |
spellingShingle |
Shengcai Li Lei Zhang Jie Tang Daijian Ling Peixuan Wang Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy Mathematical Problems in Engineering |
author_facet |
Shengcai Li Lei Zhang Jie Tang Daijian Ling Peixuan Wang |
author_sort |
Shengcai Li |
title |
Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy |
title_short |
Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy |
title_full |
Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy |
title_fullStr |
Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy |
title_full_unstemmed |
Damage Identification in Timber Structures Based on Wavelet Singular Spectrum Entropy |
title_sort |
damage identification in timber structures based on wavelet singular spectrum entropy |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2018-01-01 |
description |
Vibration responses of building structure closely related to the structural health status. In this paper, wavelet singular spectrum entropy (WSSE) is proposed to evaluate the damage condition of building structure. A 1/3 scaled model of a Chinese ancient timber structure has been constructed, and three damage conditions and one restored condition of the structure are simulated. The acceleration responses for undamaged and the four simulated damaged and restored conditions are measured and analyzed by employing WSSE to identify the location at which the structure has incurred damage. Results show that (1) the relative variation rate of WSSE for the damaged position changes significantly; (2) the relative variation rate of WSSE of the point that is damaged more severely would become higher; and (3) signals of North-South and East-West directions are required for further identification. Moreover, a finite element modeling analysis of the timber structure under different damage conditions is performed, and the results verify the applicability of the method proposed. |
url |
http://dx.doi.org/10.1155/2018/4898903 |
work_keys_str_mv |
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