Structural health monitoring of concrete elements with embedded arrays of optical fibers

Khotiaintsev, S.; Beltrán-Hernández, Alfredo; Gonzalez-Tinoco, Juan Emmanuel; Guzmán-Olguín, Héctor; Aguilar-Ramos, Gerardo

doi:10.1117/12.2009851

Cited by 8 publications

(5 citation statements)

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“…In the field of strain sensing with fiber optics, Majumder et al (2008), Li et al (2004), and Lee (2003) presented reviews of the sensory application of fiber Bragg gratings and fiber optic sensors to structural health monitoring in civil engineering. Khotiaintsev et al (2013) compared several types of optical fibers embedded in concrete beam specimens and highlight the challenges of the technology.…”

Section: Introductionmentioning

confidence: 99%

Sensory carbon fiber based textile-reinforced concrete for smart structures

Goldfeld

Rabinovitch

Fishbain

et al. 2015

Journal of Intelligent Material Systems and Structures

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This article investigates the feasibility of intelligent textile-reinforced concrete structural elements with sensing capabilities. The concept is based on dual use of glass and carbon fiber textiles as reinforcement and, at the same time, as a sensory agent. Experimental investigation demonstrates the feasibility of the concept in two applications: detecting strains in a mechanically loaded textile-reinforced concrete beam and monitoring the interaction of the structural element with a wet environment. By detecting the changes to the integrative electrical resistance of the carbon tow, the ability of the textile to sense strain and exposure to water is demonstrated. For strain sensing, the hybrid reinforcing textile provides electro-mechanical sensing with a gauge factor of the order of 1 and a detectable correlation with the load, strain, and displacement responses. For the detection of wetting, the implementation of the carbon tow in a Wheatstone bridge detects fractional resistance changes in the order of 10 25 , a figure that is effectively detected by monitoring the voltage across the bridge. The response to wetting, which is conditioned by the cracking of the beam and the exposure to ionic conductive solutions, provides a mean to monitor the functionality and the structural health of the textile-reinforced concrete beam.

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Section: Introductionmentioning

confidence: 99%

Sensory carbon fiber based textile-reinforced concrete for smart structures

Goldfeld

Rabinovitch

Fishbain

et al. 2015

Journal of Intelligent Material Systems and Structures

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“…When the OFRC is subject to stress, the optical wave amount in the optical fibers will show real-time changes, including the intensity, phase, wavelength, frequency, polarization state, or the like. According to the change of light waves, the internal stress and strain can be generally inferred, and the damage inside the concrete is determined to achieve the effect of the intelligent response of the OFRC stress field [57,[67][68][69]. e optical fibers consist of three parts, as shown in Figure 11(c).…”

Section: Stress Fieldmentioning

confidence: 99%

Research Progress in Environmental Response of Fiber Concrete and Its Functional Mechanisms

Lei

Zhao

et al. 2022

Advances in Materials Science and Engineering

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Smart fiber reinforced concretes (FRC) are good in intelligent environmental response. With the smart FRC being used in buildings such as bridges and tunnels, the real-time online distributed monitoring of concrete state can be realized. It provides an excellent solution to reduce the emergencies caused by the accumulation of damages, resistance attenuation, etc. This paper analyzes smart FRC’s self-sensing and self-healing response characteristics under different environmental response fields. Furthermore, the intelligent response mechanism of smart carbon fiber reinforced concrete (CFRC), optical fiber reinforced concrete (OFRC), glass fiber reinforced concrete (GFRC), and nanofiber reinforced concrete (NFRC) would be summarized. The response fields include the stress field, temperature field, electromagnetic field, chemical field, and humidity field, among which the field response mechanism of smart NFRC is classified and summarized. Finally, the advantages and disadvantages, the intelligent response parameters, and the applications of smart FRC under different environmental fields are compared.

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“…The authors previously investigated the possibility of detecting cracks in RC beams using fiber breaks [59][60][61]. Several embedding techniques were tested and twelve types of optical fibers were studied both in terms of their survival rate and their abilities to detect cracks.…”

Section: The Authors' Previous Researchmentioning

confidence: 99%

Assessment of Cracking in Masonry Structures Based on the Breakage of Ordinary Silica-Core Silica-Clad Optical Fibers

Khotiaintsev

Timofeyev

2022

Applied Sciences

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This paper presents a study on the suitability and accuracy of detecting structural cracks in brick masonry by exploiting the breakage of ordinary silica optical fibers bonded to its surface with an epoxy adhesive. The deformations and cracking of the masonry specimen, and the behavior of pilot optical signals transmitted through the fibers upon loading of the test specimen were observed. For the first time, reliable detection of structural cracks with a given minimum value was achieved, despite the random nature of the ultimate strength of the optical fibers. This was achieved using arrays of several optical fibers placed on the structural element. The detection of such cracks allows the degree of structural danger of buildings affected by earthquake or other destructive phenomena to be determined. The implementation of this technique is simple and cost effective. For this reason, it may have a broad application in permanent damage-detection systems in buildings in seismic zones. It may also find application in automatic systems for the detection of structural damage to the load-bearing elements of land vehicles, aircraft, and ships.

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Structural health monitoring of concrete elements with embedded arrays of optical fibers

Cited by 8 publications

References 0 publications

Sensory carbon fiber based textile-reinforced concrete for smart structures

Sensory carbon fiber based textile-reinforced concrete for smart structures

Research Progress in Environmental Response of Fiber Concrete and Its Functional Mechanisms

Assessment of Cracking in Masonry Structures Based on the Breakage of Ordinary Silica-Core Silica-Clad Optical Fibers

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