Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/66176
Title: | A coatable, lightweight nanocomposite sensor for in-situ acquisition of ultrasonic waves and its application to embeddable structural health monitoring | Authors: | Liu, M Zeng, Z Xu, H Su, Z Zhou, L Zhang, Z |
Issue Date: | 2016 | Source: | 8th European Workshop on Structural Health Monitoring, EWSHM 2016, 5-8 July 2016, Spain, Bilbao, p. 1-9 | Abstract: | Lightweight and resilient, a nano-engineered sensor was developed, coatable to engineering structures via a screen printing approach, for in-situ acquisition of ultrasonic waves for implementing guided ultrasonic wave (GUW)-based structural health monitoring (SHM). Carbon black (CB)/polyvinylidene fluoride (PVDF)-based hybrid with various degrees of percolation were prepared, to fabricate the sensor. In an ultrasonic regime, GUW modulates the infrastructure of formed conductivity network of CB nanofillers with introduction of tunneling effect, and consequently changes the piezoresistivity manifested by the sensor. Morphological characterization, and static/dynamic electro-mechanical response tests were conducted to ascertain an optimal percolation threshold of the conductivity network. At the optimal threshold (∼ 6.5 wt%), the sensor exhibits high-fidelity, fast-response, and highsensitivity to GUWs up to 400 kHz. Addressing an innovative sensing philosophy of "quasidispersed sensing", the sensor presents a potential to strike a compromise between "sensing cost" and "sensing effectiveness", well accommodating the needs from GUW-based SHM. | Keywords: | Coating Guided ultrasonic wave (GUW) Nanocomposite sensor Sensor network Structural health monitoring (SHM) |
Publisher: | NDT.net | ISBN: | 9781510827936 | Rights: | All rights reserved. No part of the contents of these proceedings may be reproduced or transmitted in any form, or by any means, without written permission from the Publisher, NDT.net or the authors. Posted with permission of the author |
Appears in Collections: | Conference Paper |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
158_Su_Rev1.pdf | 521.21 kB | Adobe PDF | View/Open |
Page views
189
Last Week
0
0
Last month
Citations as of Sep 22, 2024
Downloads
87
Citations as of Sep 22, 2024
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.