Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Partnerzy

Yue Zhong

Dalian University of Technology (CN)


Ostatnie publikacje
1.  An Y., Błachowski B., Zhong Y., Hołobut P., Ou J., Rank-revealing QR decomposition applied to damage localization in truss structures, STRUCTURAL CONTROL AND HEALTH MONITORING, ISSN: 1545-2255, DOI: 10.1002/stc.1849, Vol.24, No.2, pp.e1849-1-15, 2017

Streszczenie:
The purpose of this work is the development of an efficient and high-sensitive damage localization technique for truss structures, based on the rank-revealing QR decomposition (RRQR) of the difference-of-flexibility matrix. The method is an enhancement of the existing techniques of damage detection, which rely on the set of so-called damage locating vector (DLV). The advantages of the RRQR decomposition-based DLV (RRQR-DLV) method are its less computational effort and high sensitivity to damage. Compared with the frequently used stochastic DLV (SDLV) method, RRQR-DLV offers higher sensitivity to damage, which has been validated based on the presented numerical simulation. The effectiveness of the proposed RRQR-DLV method is also illustrated with the experimental validation based on a laboratory-scale Bailey truss bridge model. The proposed method works under ambient excitation such as traffic excitation and wind excitation; therefore, it is promising for real-time damage monitoring of truss structures.

Słowa kluczowe:
damage localization, rank-revealing QR decomposition, damage sensitivity, truss structure, structural health monitoring

Afiliacje autorów:
An Y. - Dalian University of Technology (CN)
Błachowski B. - IPPT PAN
Zhong Y. - Dalian University of Technology (CN)
Hołobut P. - IPPT PAN
Ou J. - Dalian University of Technology (CN)
35p.

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