Numerical and Experimental Identification of Seven-Wire Strand Tensions Using Scale Energy Entropy Spectra of Ultrasonic Guided Waves
Joint Authors
Wang, Xu
Qian, Ji
Chen, Xin
Sun, Limin
Yao, Guowen
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-05
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Accurate identification of tension in multiwire strands is a key issue to ensure structural safety and durability of prestressed concrete structures, cable-stayed bridges, and hoist elevators.
This paper proposes a method to identify strand tensions based on scale energy entropy spectra of ultrasonic guided waves (UGWs).
A numerical method was first developed to simulate UGW propagation in a seven-wire strand, employing the wavelet transform to extract UGW time-frequency energy distributions for different loadings.
Mode separation and frequency band loss of L(0,1) were then found for increasing tension, and UGW scale energy entropy spectra were extracted to establish a tension identification index.
A good linear relationship was found between the proposed identification index and tensile force, and effects of propagation distance and propagation path were analyzed.
Finally, UGWs propagation was examined experimentally for a long seven-wire strand to investigate attenuation and long distance propagation.
Numerical and experimental results verified that the proposed method not only can effectively identify strand tensions but can also adapt to long distance tests for practical engineering.
American Psychological Association (APA)
Qian, Ji& Chen, Xin& Sun, Limin& Yao, Guowen& Wang, Xu. 2018. Numerical and Experimental Identification of Seven-Wire Strand Tensions Using Scale Energy Entropy Spectra of Ultrasonic Guided Waves. Shock and Vibration،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1215404
Modern Language Association (MLA)
Qian, Ji…[et al.]. Numerical and Experimental Identification of Seven-Wire Strand Tensions Using Scale Energy Entropy Spectra of Ultrasonic Guided Waves. Shock and Vibration No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1215404
American Medical Association (AMA)
Qian, Ji& Chen, Xin& Sun, Limin& Yao, Guowen& Wang, Xu. Numerical and Experimental Identification of Seven-Wire Strand Tensions Using Scale Energy Entropy Spectra of Ultrasonic Guided Waves. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1215404
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215404