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

Liu, Zhiping; Chen, Kai; Li, Zongchen; Jiang, Xiaoli

doi:10.3390/s17102394

Cited by 26 publications

(20 citation statements)

References 25 publications

(28 reference statements)

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“…Deshmukn and Huang first applied patch antennas to the identification of fatigue cracks in metal structures [3]. Subsequently, Yi, Liu and Ke et al [4][5][6] also investigated the crack test results of patch antennas, but the wired connection was mainly used.…”

Section: Introductionmentioning

confidence: 99%

Method of Monitoring Cracks in a Metal Structure Based on Dual-Chip RFID Antenna Sensor

Liu

Yu²,

Zhou

et al. 2019

The 6th International Electronic Conference on Sensors and Applications

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The microstrip patch antenna sensor is a novel sensor used for structural health monitoring which can measure a metal structure’s crack defects in a wireless manner. However, it is difficult to identify the reflected signal from the signal of an antenna sensor. The radio-frequency identification (RFID) antenna sensor, which combines RFID technology and the microstrip patch antenna sensor, can solve the measurement problems that are difficult to the conventional wireless testing technologies. In this study, a dual-chip RFID antenna sensor was designed. The influence of the wireless testing method on the monitoring results of crack defects was investigated by tests, including the wireless tests of resonant frequency and the crack sensitivity tests. The tests results revealed that the antenna sensor had good wireless testing performance with regard to the metal structure’s crack defects. Additionally, the maximum of wireless identification distance reached 1.96 m.

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Section: Introductionmentioning

confidence: 99%

Method of Monitoring Cracks in a Metal Structure Based on Dual-Chip RFID Antenna Sensor

Liu

Yu²,

Zhou

et al. 2019

The 6th International Electronic Conference on Sensors and Applications

Self Cite

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“…In recent years, FRP has been widely used in the field of civil engineering [ 37 , 38 , 39 , 40 ] because of its advantages of high strength, corrosion resistance, light-weight, simple construction, and so on. Many experts began to use FRP to strengthen many kinds of materials [ 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. Wang [ 41 ] tried to strengthen double-edged cracked steel plates by FRP.…”

Section: Introductionmentioning

confidence: 99%

“…Wang [ 41 ] tried to strengthen double-edged cracked steel plates by FRP. Liu [ 42 ] presented a crack monitoring method for an FRP-strengthened steel structure deploying a microstrip antenna sensor. Tang [ 43 ] developed a new type of self-sensing fiber reinforced polymer (FRP) bar.…”

Section: Introductionmentioning

confidence: 99%

“…Tang [ 43 ] developed a new type of self-sensing fiber reinforced polymer (FRP) bar. In order to make better use of FRP, many new methods are provided for monitoring of FRP Structures [ 42 , 43 , 44 , 45 , 46 , 47 ]. Many experts and scholars also began to use FRP cloth to strengthen the mechanical properties of bamboo reconstituted wood.…”

Section: Introductionmentioning

confidence: 99%

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AFRP Influence on Parallel Bamboo Strand Lumber Beams

Zhang

Corbi

et al. 2018

Sensors

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The mechanical properties of parallel bamboo strand lumber beams could be improved by aramid fiber reinforced polymer (AFRP). So far, no investigation has been conducted on the strengthening of engineering bamboo beams using AFRP. In order to study the efficiency of AFRP reinforcement on parallel bamboo strand lumber beams, 13 beams had been tested and analyzed. Strain gauges and Laser Displacement Sensors were used for the tests. By sensing the strain and deformation data for the specimens under the applied loads, the results showed that AFRP can effectively improve the flexural mechanical properties of parallel bamboo strand lumber beams. However, this reinforcement cannot increase the deflection of bamboo beams indefinitely. When the cloth ratio was 0.48, the deflection of the specimens reached its maximum. With the increase of cloth ratio, the stiffness of parallel bamboo strand lumber beams was increasing. When the cloth ratio reached 0.72%, compared with the un-reinforced specimen, the stiffness increased by 15%. Therefore, it can be inferred that bonding AFRP on the considered specimens can increase the stiffness of parallel bamboo strand lumber beams. The ductility of the specimen can be effectively enhanced by adopting the AFRP provision.

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“…FRP composites provide excellent corrosion resistance, which keeps costs down and increases the service life of structural materials. [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. FRP jacketing of concrete has been widely accepted for retrofitting or repairing concrete members, whereby the strength capacity and ductility of concrete are efficiently enhanced.…”

Section: Introductionmentioning

confidence: 99%

Effects of Aggregate Types on the Stress-Strain Behavior of Fiber Reinforced Polymer (FRP)-Confined Lightweight Concrete

Sui

Xing

et al. 2018

Sensors

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The realization of reducing concrete self-weight is mainly to replace ordinary aggregates with lightweight aggregates; such replacement usually comes with some intrinsic disadvantages in concrete, such as high brittleness and lower mechanical properties. However, these shortages can be effectively remedied by external confinement such as fiber reinforced polymer (FRP) jacketing. To accurately predict the stress-strain behavior of lightweight concrete with lateral confinement, it is necessary to properly understand the coupling effects that are caused by diverse aggregates types and confinement level. In this study, FRP-confined lightweight concrete cylinder with varying aggregate types were tested under axial compression. Strain gauges and linear variable displacement transducers were used for monitoring the lateral and axial deformation of specimens during the tests. By sensing the strain and deformation data for the specimens under the tri-axial loads, the results showed that the lateral to axial strain relation is highly related to the aggregate types and confinement level. In addition, when compared with FRP-confined normal weight aggregate concrete, the efficiency of FRP confinement for lightweight concrete is gradually reduced with the increase of external pressure. Replace ordinary fine aggregate by its lightweight counterparts can be significantly improved the deformation capacity of FRP-confined lightweight concrete, meanwhile does not lead to the reduction of compressive strength. Plus, this paper modified a well-established stress-strain model for an FRP-confined lightweight concrete column, involving the effect of aggregate types. More accurate expressions pertaining to the deformation capacity and the stress-strain relation were proposed with reasonable accuracy.

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

Cited by 26 publications

References 25 publications

Method of Monitoring Cracks in a Metal Structure Based on Dual-Chip RFID Antenna Sensor

Method of Monitoring Cracks in a Metal Structure Based on Dual-Chip RFID Antenna Sensor

AFRP Influence on Parallel Bamboo Strand Lumber Beams

Effects of Aggregate Types on the Stress-Strain Behavior of Fiber Reinforced Polymer (FRP)-Confined Lightweight Concrete

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