Structural health monitoring of smart structures

Maalej, Mohamed; Karasaridis, Anestis; Pantazopoulou, Stavroula J.; Hatzinakos, Dimitrios

doi:10.1088/0964-1726/11/4/314

Cited by 19 publications

(13 citation statements)

References 7 publications

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“…The traditional structural monitoring sensors, such as strain gauges, accelerometers, temperature gauges, etc., are replaced with embedded MEMS and fibre optic sensors (e.g. Maalej et al 2002;Hunt 2006;Huston 2010;Stepinski et al 2013;Di Sante 2015). The power supply range, which is significantly broadened by applications of smart materials includes wire based, wireless and energy harvesting methods (Priya and Inman 2008;Annamdas and Radhika 2013).…”

Section: Components Of Computational Monitoring In Real Timementioning

confidence: 99%

“…For example, the electric resistance strain gauges are often used to monitor the strain inside the steel reinforcing bars (e.g. Maalej et al 2002;Hunt 2006;Huston 2010;Stepinski et al 2013;Di Sante 2015). For example, for 120 Ohm resistance strain gauges, the strains can be calculated as Strain (micro-stain) = CI 9 Volt/ (2.5G 9 F), where F is the gauge factor, G is the gain, CI is connection index that is 1, 2, or 4 for full bridge installation, 2 for half a bridge, and 4 for one quarter of a bridge, respectively.…”

Section: Strain Gauge Monitoringmentioning

confidence: 99%

See 1 more Smart Citation

Computational monitoring in real time: review of methods and applications

Dyskin

Başarır

Doherty

et al. 2018

Geomech. Geophys. Geo-energ. Geo-resour.

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Continuous monitoring of mechanical parameters determining the state of natural and manmade systems is essential in a wide range of engineering disciplines from mechanical to civil and geotechnical engineering. To be effective, the monitoring response time needs to be commensurate with the characteristic time of variation of the processes being monitored e.g. from seconds as for example in some machinery, to weeks and months for mining excavations and years in the case of structures. The methods of measurement can therefore differ significantly for different applications. In spite of this, the methods of information processing-the computational monitoring-have considerable commonality. This review focuses on the methods of computational monitoring in solid and structural mechanics problems in different engineering applications. The traditional methods of monitoring are reviewed along with the corresponding computational and measurement methods. The basic principles of the computational monitoring in real time are established.

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Section: Components Of Computational Monitoring In Real Timementioning

confidence: 99%

Section: Strain Gauge Monitoringmentioning

confidence: 99%

Computational monitoring in real time: review of methods and applications

Dyskin

Başarır

Doherty

et al. 2018

Geomech. Geophys. Geo-energ. Geo-resour.

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“…Moreover, the new and existing large infrastructure projects being built everywhere are suffering from different forms of deterioration. Thus, smart systems facilitate the performance of Structural Health Monitoring (SHM) tasks, ranging from the construction phase to the service phase [3].…”

Section: Introduction Q1mentioning

confidence: 99%

Advances of FRP-based smart components and structures

Chan

Zhou

2014

Pacific Science Review

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Fibre-Reinforced Polymer (FRP) composites have been widely used in civil engineering for the past two decades. This paper presents an overview of the smart components and structures based on FRP. The basic principles of intelligent structures made of FRP and Optical fibre sensors are introduced. Some significant up-to-date smart elements used as reinforcing and health monitoring structures are also described in detail. Moreover, certain applications of smart FRP systems in civil engineering are briefly mentioned. Smart bars based on FRP are found to be very useful and could replace conventional steel. In addition, FRP-OF-OFBG is one of the most advanced techniques for local and global monitoring. However, interface strain for externally reinforcing systems requires specific characteristics to overcome debonding effects. Finally, analysis of the problems of existing applications based on carbon fibre composites are highlighted, followed by a description of some possibilities of new designs of smart FRPs.

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“…These studies, employing a variety of optical fiber sensors including fiber optic spectroscopy [9], fibre Bragg gratings [10][11][12], Fabry-Pe´rot [13,14], and intensity-based optical fiber sensors [15,16] provide a clear demonstration of the potential of optical fibre sensor technology for structural health monitoring of civil engineering structures. Comprehensive review articles on the application of optical fiber sensors for civil engineering structures can be found in references [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Sensing for Monitoring Corrosion-Induced Damage

Maalej

Shaikh

Kuang

et al. 2004

Structural Health Monitoring

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This paper reports the feasibility of using embedded Fabry-Pé rot fiber optic sensors to detect and monitor the propagation of cracks and delamination within concrete beams induced by corrosion of the reinforcing bars. In this research, four series of reinforced concrete beams were subjected to varying degrees of corrosion-induced damage by modifying the composition of the concrete mix and subjecting all specimens to the same accelerated corrosion environment. The concept employed in this study involves embedding the Fabry-Pé rot sensor between two reinforcing bars to measure the transverse tensile strains associated with the longitudinal crack along the reinforcing bars (and in severe cases, delamination of the concrete beam) resulting from the radial expansion of the corroding rebars. Excellent correlation was obtained between the Fabry-Pé rot strain data and the amount of steel loss resulting from accelerated corrosion. In addition, the optical sensor strain readings and the reductions in the load-carrying and deflection capacities were also observed to exhibit strong positive correlation highlighting the potential of the optical sensor to monitor the progression of the rebar damage and the loss of structural integrity of the beams resulting from the extensive corrosion. The technique used in this study demonstrates the possibility of detecting corrosion-induced damage in reinforced concrete structures, particularly those where visual inspection is not possible.

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Structural health monitoring of smart structures

Cited by 19 publications

References 7 publications

Computational monitoring in real time: review of methods and applications

Computational monitoring in real time: review of methods and applications

Advances of FRP-based smart components and structures

Fiber Optic Sensing for Monitoring Corrosion-Induced Damage

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