Electromechanical impedance measurement from large structures using a dual piezoelectric transducer
- Authors
- Song H.; Lim H. J.; Sohn H.
- Issue Date
- Dec-2013
- Publisher
- Academic Press
- Citation
- Journal of Sound and Vibration, v.332, no.25, pp.6580 - 6595
- Journal Title
- Journal of Sound and Vibration
- Volume
- 332
- Number
- 25
- Start Page
- 6580
- End Page
- 6595
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/85370
- DOI
- 10.1016/j.jsv.2013.07.023
- ISSN
- 0022-460X
- Abstract
- This study develops a new electromechanical (EM) impedance measurement technique specifically for continuous monitoring of large structures. Conventionally, a single surface-mounted lead zirconate titanate (PZT) transducer is often used to measure the EM impedance of a coupled PZT-structure system for damage diagnosis. However, when the target structure is massive, the impedance measurement becomes challenging. In this study, a dual piezoelectric transducer, composed of two separate but concentric PZT segments, is used for effective measurement of the FM impedance from large-scale structures. The impedance measurement using the dual PZT is theoretically formulated and numerically verified. Then, a series of experiments are carried out on a laboratory size specimen and full-scale bridge and building structures. The experimental results reveal that the proposed technique successfully measures the FM impedance signals from massive structures with a high signal-to-noise ratio (SNR) and good repeatability even when the conventional techniques fail to do so. AL the same Lime, the proposed technique allows low-cost and fast measurement of impedance signals. (C) 2013 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 토목환경공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/85370)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.