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DOI码：10.1016/j.sna.2020.112420

发表刊物：Sensors and Actuators A Physical

摘要：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.

论文类型：期刊论文

论文编号：112420

卷号：316

是否译文：否

发表时间：2020-12-01

收录刊物：SCI

发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0924424720317362