Health Monitoring of Bolt Looseness in Timber Structures Using PZT-Enabled Time-Reversal Method
Joint Authors
Zhao, Ze
Chen, Pengcheng
Zhang, En
Lu, Guoyun
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-24
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A prestressed bolt connection is one of the crucial connection types in timber structures.
The daily checking and maintenance of bolt connections have to be carried out in order to avoid the collapse of timber structures due to bolt looseness.
Real-time health monitoring of bolt connections can not only reduce the daily maintenance cost of timber structures, but it can also avoid property loss and casualties by giving early warning if the bolt connection is loosened in timber structures.
This paper proposes a method of prestress monitoring of bolt joints in timber structures by pasting lead zirconate titanate (PZT) patches on the surface of timber structures, and the time-reversal method is applied to denote the connection status of bolts in timber structures.
The prestress loss index of timber structural bolts based on wavelet analysis is designed to quantify the bolt looseness of the timber structure.
The experimental timber specimen was fabricated consisting of two timber panels, one bolt, and two PZT patches.
One of the PZT patches acted as an actuator to emit the stress waves, and another one acted as a sensor to receive the stress wave propagating through the connection interface.
The experimental results showed that the amplitude of the focused signal increases significantly with the increase of the prestress value of the bolts, which verify that the proposed method can be utilized to monitor the looseness of bolts in timber structures.
The analysis results of the focused signal is proof that the prestress loss index of timber structural bolts designed based on wavelet analysis can reflect the looseness of timber structural bolts.
American Psychological Association (APA)
Zhao, Ze& Chen, Pengcheng& Zhang, En& Lu, Guoyun. 2019. Health Monitoring of Bolt Looseness in Timber Structures Using PZT-Enabled Time-Reversal Method. Journal of Sensors،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1187335
Modern Language Association (MLA)
Zhao, Ze…[et al.]. Health Monitoring of Bolt Looseness in Timber Structures Using PZT-Enabled Time-Reversal Method. Journal of Sensors No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1187335
American Medical Association (AMA)
Zhao, Ze& Chen, Pengcheng& Zhang, En& Lu, Guoyun. Health Monitoring of Bolt Looseness in Timber Structures Using PZT-Enabled Time-Reversal Method. Journal of Sensors. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1187335
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1187335