Nonpenetrating Damage Identification Using Hybrid Lamb Wave Modes from Hilbert-Huang Spectrum in Thin-Walled Structures
Joint Authors
Qiao, Pizhong
Wang, Zijian
Shi, Binkai
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Lamb waves have shown promising advantages for damage identification in thin-walled structures.
Multiple modes of Lamb wave provide diverse sensitivities to different types of damage.
To sufficiently utilize damage-related wave features, damage indices were developed by using hybrid Lamb wave modes from Hilbert-Huang spectra.
Damage indices were defined as surface integrals of Hilbert-Huang spectra on featured regions determined by time and frequency windowing.
The time windowing was performed according to individual propagation velocity of different Lamb wave mode, while the frequency windowing was performed according to the frequency of excitation.
By summing damage indices for all transmitter-receiver pairs, pixels were calculated to reconstruct a damage map to characterize the degree of damage at each location on structure.
Both numerical and experimental validations were conducted to identify a nonpenetrating damage.
The results demonstrated that the proposed damage indices using hybrid Lamb wave modes are more sensitive and robust than the one using single Lamb wave mode.
American Psychological Association (APA)
Wang, Zijian& Qiao, Pizhong& Shi, Binkai. 2017. Nonpenetrating Damage Identification Using Hybrid Lamb Wave Modes from Hilbert-Huang Spectrum in Thin-Walled Structures. Shock and Vibration،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1204609
Modern Language Association (MLA)
Wang, Zijian…[et al.]. Nonpenetrating Damage Identification Using Hybrid Lamb Wave Modes from Hilbert-Huang Spectrum in Thin-Walled Structures. Shock and Vibration No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1204609
American Medical Association (AMA)
Wang, Zijian& Qiao, Pizhong& Shi, Binkai. Nonpenetrating Damage Identification Using Hybrid Lamb Wave Modes from Hilbert-Huang Spectrum in Thin-Walled Structures. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1204609
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204609