Design calibration and characterization of a robust low-cost fiber-optic 2D deflection sensor

Bajić, Jovan S.; Markovic, Marko; Joža, Ana; Vasić, Dejan; Tosa, Naoko

doi:10.1016/j.sna.2017.10.014

Cited by 15 publications

(7 citation statements)

References 32 publications

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“…In this way, the readings of the light intensity are provided in real time. FOCSs are connected to independent LEDs and PDs [ 20 ]. The described method of 2D deflection sensor installation makes it possible to perform differential measurements, as well as a higher sensitivity in the measurements of deformations.…”

Section: 2d Deflection Sensor Designmentioning

confidence: 99%

“…The calibration and characterization were done in a laboratory of the Faculty of Technical Sciences in Novi Sad. Results are given in detail in the study by Bajic et al [ 20 ].…”

Section: 2d Deflection Sensor Designmentioning

confidence: 99%

“…This is supported by the fact that to produce 2D deflection sensor robust and low-cost plastic (PMMA) optical fibers were used. In this paper, a new approach, developed for monitoring of engineering structures, is considered, which, in addition to geodetic measurements, applies 2D deflection sensor in detecting local deformations [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Markovic

Bajić

Batilović

et al. 2019

Sensors

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In the paper the description of an experiment for a comparative analysis of two different methods for deformation determination, geodetic and 2D deflection sensors based on fiber-optic curvature sensors (FOCSs) is given. The experiment is performed by a using specially designed assembly which makes it possible to apply both methods. For performing geodetic measurements, a geodetic micro-network is established. Measurements by applying a 2D deflection sensor and three total stations are carried out for comparison. The data processing comprises graphical and numerical analysis of the results. Based on the presented results the potential of 2D deflection sensor application in structural health monitoring (SHM) procedures is indicated. The analysis of the measurement results also indicates the importance of integrating various types of sensors for obtaining more accurate and more reliable deformation measurements results.

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Section: 2d Deflection Sensor Designmentioning

confidence: 99%

“…The calibration and characterization were done in a laboratory of the Faculty of Technical Sciences in Novi Sad. Results are given in detail in the study by Bajic et al [ 20 ].…”

Section: 2d Deflection Sensor Designmentioning

confidence: 99%

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Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Markovic

Bajić

Batilović

et al. 2019

Sensors

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“…Los sensores de fibra óptica también han sido muy empleados para estudiar deformaciones [25], [26], [27], [28], [29] y flechas [30], [31], [32], [33], [34], [35], [36], objeto de este artículo.…”

Section: Introductionunclassified

Influence of the cracking moment of two reinforced concrete beams obtained through fiber optic sensors in the determination of their instant deflections = Influencia del momento de fisuración de dos vigas de hormigón armado obtenido mediante sensores de fibra óptica en la determinación de sus flechas instantáneas

Díaz¹

2021

BMA

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This article investigates the measurement of the real instantaneous deflection using a displacement transducer, and with fiber optic sensors embedded and welded to the corrugated rebars in order to determine the real cracking moment of the concrete. Two reinforced concrete beams simply resting on the support with point loading in the center of the span have been tested, at which point the maximum deflection is reached. Both the sensors and the displacement transducer have been placed in the center of the span. Different loading steps have been applied to the beams, using a loading cylinder, and the measurement of the load applied has been determined using a loading cell. During the loading process of the beams, the real moment at which they cracked has been determined, and which determines the change from the gross inertia to the cracked inertia in the study of the deflections. Two expressions have been deduced that modify the formula of the instantaneous deflection and demonstrate that they are valid to determine in a much more precise way the instantaneous deflections on simply resting on the support concrete beams. Future lines of research will concentrate on studying the instantaneous deflections of more complex beams, and thus obtain expressions that more closely approximate their actual behaviour.

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“…Los límites de error adquiridos para la medición de la magnitud y la dirección de la deflexión son ± 0,15 mm y ± 2,5 °, respectivamente. La respuesta del sensor propuesto bajo diferentes condiciones de temperatura mostró que se puede aplicar un método de compensación simple aumentando el rendimiento general del sensor (Xu, Yin and Liu, 2018) (Bajić et al, 2017).…”

Section: Flechasunclassified

Instrumentación de edificios para la evaluación del estado estructural en tiempo real

Díaz¹

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Deseo iniciar este capítulo de agradecimientos a Belén, María y Rodrigo.Cuando me embarqué en esta singladura, no fui consciente de todo el tiempo que les iba a robar. Aun así, me apoyasteis en todo momento, me disteis fuerzas para continuar, y ahora que por fin termina, sois tan felices como puedo serlo yo.Me siento orgulloso de teneros en mi vida.A mis padres, que, aunque ya no están entre nosotros, se esforzaron tanto por enseñarme que sin esfuerzo y sacrificio no se consigue llegar a la meta.A mis directores de tesis, Nieves y Edelmiro, por la confianza que han depositado en mí, por su aliento y ayuda en este largo proceso.

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Design calibration and characterization of a robust low-cost fiber-optic 2D deflection sensor

Cited by 15 publications

References 32 publications

Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Instrumentación de edificios para la evaluación del estado estructural en tiempo real

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