An Antenna Sensor for Crack Detection and Monitoring

Irshad, Mohammad; Huang, Haiying

doi:10.1260/1369-4332.14.1.47

Cited by 44 publications

(18 citation statements)

References 21 publications

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“…The curves for the experimental data and the simulation data are both fitted in the figure above. The results show that the resonant frequency of the antenna sensor has a parabolic relationship with the crack length, and this is identical to the conclusion given in the literature [ 24 ].…”

Section: Sensitivity Analysis Of Antenna Sensors For Crack Monitorsupporting

confidence: 89%

Crack Monitoring Method for an FRP-Strengthened Steel Structure Based on an Antenna Sensor

Liu

Chen

et al. 2017

Sensors

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Fiber-reinforced polymer (FRP) has been increasingly applied to steel structures for structural strengthening or crack repair, given its high strength-to-weight ratio and high stiffness-to-weight ratio. Cracks in steel structures are the dominant hidden threats to structural safety. However, it is difficult to monitor structural cracks under FRP coverage and there is little related research. In this paper, a crack monitoring method for an FRP-strengthened steel structure deploying a microstrip antenna sensor is presented. A theoretical model of the dual-substrate antenna sensor with FRP is established and the sensitivity of crack monitoring is studied. The effects of the weak conductivity of carbon fiber reinforced polymers (CFRPs) on the performance of crack monitoring are analyzed via contrast experiments. The effects of FRP thickness on the performance of the antenna sensor are studied. The influence of structural strain on crack detection coupling is studied through strain–crack coupling experiments. The results indicate that the antenna sensor can detect cracks in steel structures covered by FRP (including CFRP). FRP thickness affects the antenna sensor’s performance significantly, while the effects of strain can be ignored. The results provide a new approach for crack monitoring of FRP-strengthened steel structures with extensive application prospects.

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Section: Sensitivity Analysis Of Antenna Sensors For Crack Monitorsupporting

confidence: 89%

Crack Monitoring Method for an FRP-Strengthened Steel Structure Based on an Antenna Sensor

Liu

Chen

et al. 2017

Sensors

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“…Wireless sensor networks (WSNs) are a favorite candidate for structural health monitoring (SHM) of large structures. As an interdiscipline consisting of sensor, communication, and wireless technology, WSNs were initially applied in the military and then extended to environmental monitoring, agriculture, medical treatment, and civil engineering [1][2][3][4][5][6][7][8][9][10][11][12][13]. Various types of sensors have been developed during the past decades (such as strain gauge and optical fiber sensors) while SHM technology is becoming important in a wide range of technical fields, most of the time in combination with structural use of special composites and high-performance materials [14].…”

Section: Introductionmentioning

confidence: 99%

“…A brief summary and comparison among benefits and disadvantages related to active and passive wireless sensors are given in [28] together with the presentation of a passive wireless structural health monitoring sensor made with a flexible planar dipole antenna. In fact, it is understood that chipless passive wireless sensors can give real-time structural information for SHM without space and battery constraints in harsh environmental conditions [10][11][12][13]. Chipless passive wireless strain and damage detection sensors based on a frequency selective surface are presented in [29].…”

Section: Introductionmentioning

confidence: 99%

Presenting a New Wireless Strain Method for Structural Monitoring: Experimental Validation

et al. 2019

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The structural health monitoring (SHM) of large and complex infrastructures as well as laboratory tests of new structures and materials resorts to strain gauge measurements to check mechanical stress. A wireless measurement of the strain gauge response is desirable in many practical applications to avoid the cost and the difficulty of wiring, particularly in large structures requiring several sensors and in complex objects where the measurement points are difficult to access. In this paper, a wireless strain gauge which is a hybrid between an RFID tag and a usual thin-film resistive strain gauge is experimented. Installation and maintenance problems of the wireless sensor networks are overcome allowing a high level of measurement accuracy, comparable to that of wired strain sensors, together with a long measurement distance. A large set of measurements has been performed using reference specimens and readings in order to validate the sensor and to develop a calibration procedure that makes the sensor suitable for a large number of different applications in civil engineering.

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“…The cost benefit of passive wireless antenna sensors enabling with radio frequency identification (RFID) technology has gained much attention in both academy and industry for potential monitoring applications in both structure health and environmental conditions [8]. Armed with unique identification (UID), this type of sensor is a good candidate for densely distributed sensing application [9].…”

Section: Introductionmentioning

confidence: 99%

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

et al. 2018

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Radio frequency identification (RFID) tag antenna based passive wireless sensors are receiving increasing attentions for structural health monitoring (SHM) in large-scale infrastructure. For permanently-installed monitoring, robustness to measurement variation including environmental conditions is a practical issue. This paper retrospects the communication principle of magnetic resonant coupling (MRC) for low frequency (LF) passive wireless RFID antenna sensors. The influence of communication is uncovered and essentially separated from sensing through two steps: sweep (source) frequency to capture the system behavior, i. e., resonance frequency range; multiple feature extraction, fusion, and selection in conjunction with normalization for the selected time-domain feature of peak to peak (P2P). By this way, the robustness of the low-cost RFID sensing system is enhanced. The proposed method is validated by the case study in open crack detection and characterization under varied measurement conditions.

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An Antenna Sensor for Crack Detection and Monitoring

Cited by 44 publications

References 21 publications

Crack Monitoring Method for an FRP-Strengthened Steel Structure Based on an Antenna Sensor

Crack Monitoring Method for an FRP-Strengthened Steel Structure Based on an Antenna Sensor

Presenting a New Wireless Strain Method for Structural Monitoring: Experimental Validation

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

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