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A Time-Frequency Research for Ultrasonic Guided Wave Generated from the Debonding Based on a Novel Time-Frequency Analysis Technique
Joint Authors
Wu, Junhua
Ma, Zheshu
Zhang, Yonghui
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-02-09
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Carbon fibre composites have a promising application in the future of the vehicle, because of their high strength and light weight.
Debonding is a major defect of the carbon fibre composite.
The time-frequency analysis is fundamental to identify the defect on ultrasonic nondestructive evaluation and testing.
In order to obtain the instantaneous frequency and the peak time of modes of the ultrasonic guided wave, an algorithm based on the Smoothed Pseudo Wigner-Ville distribution and the peak-track algorithm is presented.
In the algorithm, a masking step is proposed, which can guarantee that the peak-track algorithm can automatically exact the instantaneous frequency and the instantaneous amplitude of different modes on the Smoothed Pseudo Wigner-Ville distribution.
An experiment for detecting the debonding for a type of carbon fibre composite is done.
The presented algorithm is employed on the experimental signals.
The processed result of experimental signals reveals that the defect can stimulate new modes, and there is a quantitative relationship between the defect size and the frequency of the new mode.
The presented technique provides a valuable way to detect the presentence, calculate the size, and locate the position of the debonding defect.
American Psychological Association (APA)
Wu, Junhua& Ma, Zheshu& Zhang, Yonghui. 2017. A Time-Frequency Research for Ultrasonic Guided Wave Generated from the Debonding Based on a Novel Time-Frequency Analysis Technique. Shock and Vibration،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1204699
Modern Language Association (MLA)
Wu, Junhua…[et al.]. A Time-Frequency Research for Ultrasonic Guided Wave Generated from the Debonding Based on a Novel Time-Frequency Analysis Technique. Shock and Vibration No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1204699
American Medical Association (AMA)
Wu, Junhua& Ma, Zheshu& Zhang, Yonghui. A Time-Frequency Research for Ultrasonic Guided Wave Generated from the Debonding Based on a Novel Time-Frequency Analysis Technique. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1204699
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204699