Browse by author
Lookup NU author(s): Professor Gui Yun TianORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2020 Elsevier BV. Passive wireless sensors enabled by the electromagnetic (EM) resonator inherit the merits of low cost and green in power consumption. The uncertainty of the crack location, however, will cause a sensitivity variation, which is tightly related to the operating mode and field distribution. A cylindrical ring dielectric resonator (CRDR) is proposed to cope with this issue in this paper. According to the shape perturbation of the EM resonator, the presence of the crack can cause an increase in the stored magnetic energy over the stored electric energy inside the crack, resulting in a resonant frequency shift to the lower frequency region. By comparing with cylindrical dielectric resonator (CDR), the sensing principle and crack detection capability based on the proposed CRDR is demonstrated in both simulation and experiment. The information gathered from this type of sensor can be used to support predictive maintenance, repair, and decision making for structural health monitoring (SHM) in extreme environments.
Author(s): Zhang J, Chen Z, Cao J, Huang C, Tian G
Publication type: Article
Publication status: Published
Journal: Sensors and Actuators, A: Physical
Print publication date: 01/12/2020
Online publication date: 07/11/2020
Acceptance date: 03/11/2020
Date deposited: 06/01/2021
ISSN (print): 0924-4247
Publisher: Elsevier BV
Altmetrics provided by Altmetric