Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy
Joint Authors
Xiang, Chang-Sheng
Li, Ling-Yun
Zhou, Yu
Yuan, Zi
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-19
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
Generally, the damage of the structure will lead to the discontinuity of the local mode shape, which can be well reflected by the modal curvature of the structure, and the local information entropy of the beam structure will also change with the discontinuity of the mode.
In this paper, based on the information entropy theory and combining the advantages of modal curvature index in damage identification of beam structure, the modal curvature utility information entropy index is proposed.
The modal curvature curves of nondestructive structures were obtained by fitting the modal curvature curves of damage structures with the gapped smoothing technique to avoid dependence on the baseline data of nondestructive structures.
The index comprehensively reflects the damage state of the structure by calculating mutual weight change matrix and the weight-probability coefficient.
The performance of the new index was verified by the finite element simulation and model test of simply supported beam, respectively.
The results show that the modal curvature utility information entropy index takes advantage of the modal curvature index which is sensitive to damage and can overcome its shortcomings effectively.
The index proposed can identify the damage location and damage degree accurately and has certain noise immunity, which provides an effective damage identification indicator for beam structures.
American Psychological Association (APA)
Xiang, Chang-Sheng& Li, Ling-Yun& Zhou, Yu& Yuan, Zi. 2020. Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1125525
Modern Language Association (MLA)
Xiang, Chang-Sheng…[et al.]. Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy. Advances in Civil Engineering No. 2020 (2020), pp.1-20.
https://search.emarefa.net/detail/BIM-1125525
American Medical Association (AMA)
Xiang, Chang-Sheng& Li, Ling-Yun& Zhou, Yu& Yuan, Zi. Damage Identification Method of Beam Structure Based on Modal Curvature Utility Information Entropy. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1125525
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125525