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Novel Sensors for Structural Health Monitoring: 2nd Edition

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Environmental Sensing".

Deadline for manuscript submissions: 25 May 2025 | Viewed by 573

Special Issue Editor


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Guest Editor
Construct-ViBest, Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, Portugal
Interests: structural dynamics; modal analysis; structural health monitoring; dynamic testing of bridges and special structures; sensors development
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Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our previous Special Issue titled “Novel Sensors for Structural Health Monitoring”.

In recent years, many researchers have developed novel sensors driven by the growth in sensing technologies combined with the easier access to data acquisition, processing, and storage systems. Among other advantages, these solutions have the ability to be flexible, as they can be customized and adapted to each specific case under study.

This Special Issue is dedicated to the dissemination of research work in this area, with a special focus on problems involving the heath monitoring of different types of structures.

Dr. Carlos Moutinho
Guest Editor

Manuscript Submission Information

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Keywords

  • distributed sensor networks
  • vision systems
  • fiber optic sensing
  • wireless sensing
  • noncontact sensing
  • laser and radar systems
  • unmanned ground and aerial vehicle inspection
  • global navigation satellite systems
  • energy-harvesting-based systems

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Published Papers (1 paper)

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Research

25 pages, 10965 KiB  
Article
Bottom Crack Detection with Real-Time Signal Amplitude Correction Using EMAT-PEC Composite Sensor
by Yizhou Guo, Yu Hu, Kai Wang, Yini Song, Bo Feng, Yihua Kang and Zhaoqi Duan
Sensors 2024, 24(16), 5196; https://doi.org/10.3390/s24165196 - 11 Aug 2024
Viewed by 393
Abstract
During electromagnetic ultrasonic testing, it is difficult to recognize small-size bottom cracks by time of flight (ToF), and the lift-off fluctuation of the probe affects the accuracy and consistency of the inspection results. In order to overcome the difficulty, a novel composite sensor [...] Read more.
During electromagnetic ultrasonic testing, it is difficult to recognize small-size bottom cracks by time of flight (ToF), and the lift-off fluctuation of the probe affects the accuracy and consistency of the inspection results. In order to overcome the difficulty, a novel composite sensor of an electromagnetic acoustic transducer (EMAT) and pulse eddy current (PEC) is designed. We use the amplitude of a bottom echo recorded by EMAT to identify the tiny bottom crack as well as the amplitude of PEC signals picked up by the integrated symmetric coils to measure the average lift-off of the probe in real time. Firstly, the effects of lift-off and bottom cracks on the amplitude of bottom echo are distinguished by combining the theoretical analysis and finite element method (FEM). And then an amplitude correction method based on the fusion of EMAT and PEC signals is proposed to reduce the impact of lift-off on the defect signal. The experimental results demonstrate that the designed composite sensor can effectively detect a bottom crack as small as 0.1 mm × 0.3 mm. The signal fusion method can accurately correct the amplitude of defect signals and the relative error is less than ±8%. Full article
(This article belongs to the Special Issue Novel Sensors for Structural Health Monitoring: 2nd Edition)
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