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

Gregori, Amedeo; Giampaolo, E. Di; Carlofelice, Alessandro Di; Castoro, Chiara

doi:10.1155/2019/5370838

Cited by 16 publications

(13 citation statements)

References 24 publications

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“…For example, Tondolo et al [20] designed a smart steel system to measure the strain of reinforced concrete members by implanting a commercial barometric pressure MEMS sensor into an appropriate sealed cavity in the reinforcement. Gregori et al [21] invented a wireless strain gauge that combines an RFID tag with a common thin-film resistive strain gauge, overcoming the installation and maintenance problems of wireless sensor networks. Morgese et al [22] developed a two-stage monitoring method combining distributed optical fiber sensors and digital image correlation techniques.…”

Section: Introductionmentioning

confidence: 99%

Critical Experiments for Structural Members of Micro Image Strain Sensing Sensor Based on Smartphone and Microscope

et al. 2022

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Strain is one of the key concerns of structural health monitoring (SHM), and effective measurement of structural strain is very important for structural health condition assessment. The purpose of this paper is to investigate the application of the micro image strain sensing (MISS) sensor based on smartphone and microscope for measuring strain parameters of structural members. Firstly, metal tensile tests were performed to verify the effectiveness of the MISS sensor, and the strain results measured by the fiber Bragg grating (FBG) sensor and the MISS sensor were compared. The results showed that the mean error between the MISS and FBG sensor measured results is 7.1 με in the metal tensile test. Then, a concrete beam bending test was carried out; the mean relative error of strain values between the FBG sensor and the MISS sensor is 2.5%. Overall, the strain measurements of the MISS sensor matched well with those from the FBG sensor in each experiment. This study validates the reliability and accuracy of the MISS sensor for strain detection and the MISS sensors can play a more powerful role in SHM due to their robustness, simplicity, and low cost.

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Section: Introductionmentioning

confidence: 99%

Critical Experiments for Structural Members of Micro Image Strain Sensing Sensor Based on Smartphone and Microscope

et al. 2022

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“…The breakage‐triggered mechanism enables the sensor to measure the largest deformation of the brace during earthquakes, and the RFID tag will retain this deformation information until the reader interrogates the tag. Most previous RFID‐based strain sensors 19–23 can only measure the real‐time strain when the reader interrogates the RFID tag. If these sensors are used to detect the strain of a structural component after earthquakes, the residual strain will be obtained instead of the largest strain.…”

Section: Introductionmentioning

confidence: 99%

“…17,18 • The breakage-triggered mechanism enables the sensor to measure the largest deformation of the brace during earthquakes, and the RFID tag will retain this deformation information until the reader interrogates the tag. Most previous RFID-based strain sensors [19][20][21][22][23] can only measure the real-time strain when the reader interrogates the RFID tag.…”

Section: Introductionmentioning

confidence: 99%

Multi‐level breakage‐triggered radio frequency identification‐based deformation sensor for rapid post‐earthquake loss assessment of buildings: Concept, development, and application

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Zhang

et al. 2022

Structural Contr & Hlth

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Summary Structural components in a building are often enclosed by architectural coverings, which make it difficult to detect the damage levels of these components after earthquakes, because it is costly and time‐consuming to remove the coverings. To rapidly detect the deformation conditions of the braces in a tension‐only concentrically braced frame, a novel wireless radio frequency identification (RFID) based deformation sensor is presented in this paper. The battery‐less sensor can be mounted on a steel plate brace, and when the largest elongation that the brace has ever experienced exceeds one of the preset deformation thresholds, the impedance of the RFID tag will change accordingly. In other words, the RFID tag can record the peak tensile deformation of the brace by changing its electrical state passively. In order to collect the deformation information of the key components of a structure after an earthquake, one only needs to carry an RFID interrogator/reader into the building and scan the RFID tags one by one in a contactless and non‐line‐of‐sight way. Then, the damage levels are displayed in a building information modeling (BIM) software, and the collected information are further used to estimate the building losses automatically, which can help decision‐makers decide whether to repair or to reconstruct the building. In this paper, a middleware was developed to enable the RFID reader to communicate with the BIM software. An experimental test was carried out to validate the sensor‐reader‐BIM system. A procedure for designing an optimal distribution of the deformation thresholds is also presented.

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“…The results should be obtained by means of low-cost sensors, specifically strain gauges. The use of these types of sensors is widespread as a technique for the structural analysis of components of metal structures in general [7][8][9][10]. In addition, this methodology must allow analysing the structural behaviour of each component of the front-end loader by means of numerical techniques based on the Finite Element Method (FEM).…”

Section: Introductionmentioning

confidence: 99%

“…Results from unidirectional strain gauges from the dynamic load test. Results from rosettes from the dynamic load test 8. Journal of Sensors…”

mentioning

confidence: 99%

Application of Low-Cost Sensors for the Development of a Methodology to Design Front-End Loaders for Tractors

et al. 2020

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Tractor front-end loaders are an essential part of the equipment used on farms. At present, there are an important number of smalland medium-sized companies involved in the manufacturing of this equipment. These companies rely heavily on experience for innovative designs, as in the vast majority of cases they lack access to adequate methodology for the optimal design of new front-end loaders. The study conducted has developed a methodology to design tractor front-end loaders with a view of obtaining their accurate design during the bucket loading process. The methodology comprises two phases: the first phase involves a numerical analysis of the structural behaviour of the front-end loader components by means of the Finite Element Method; the second phase, the experimental phase, makes use of low-cost sensors, in particular, strain gauges, to analyse existing strains at selected points in the front-end loader structure. The experimental results obtained by means of low-cost sensors fitted onto the front-end loader allow analysing the existing strains at the points measured, as well as validate the numerical model developed. This methodology is validated by applying it to a commercial front-end loader, more specifically to model 430E2 of the company Maquinaria Agrícola El León S.A (Spain).

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

Cited by 16 publications

References 24 publications

Critical Experiments for Structural Members of Micro Image Strain Sensing Sensor Based on Smartphone and Microscope

Critical Experiments for Structural Members of Micro Image Strain Sensing Sensor Based on Smartphone and Microscope

Multi‐level breakage‐triggered radio frequency identification‐based deformation sensor for rapid post‐earthquake loss assessment of buildings: Concept, development, and application

Application of Low-Cost Sensors for the Development of a Methodology to Design Front-End Loaders for Tractors

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