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Showing 1 to 8 of 8 for “"fibre optic sensing"”.
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Fibre optic sensing techniques for the detection of lead (II) ions
… of two lead-sensitive reagents in different fibre optic sensing configurations. The reagents were carefully selected for their response towards lead. A probe was built for each reagent and a sensor system designed, constructed and tested with each probe followed by analysis of the …
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Error analysis for distributed fibre optic sensing technology based on Brillouin scattering
… work conducted on error analysis for Brillouin Optical Time Domain Reflectometry (BOTDR), a distributed strain sensing technology used for monitoring the structural performance of infrastructures. Although BOTDR has been recently applied to many infrastructure monitoring applications, its …
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Distributed Fibre Optic Sensing to Assess Support Reactions and Behaviour of Composite Steel Bridges
… in this investigation involves using distributed fibre optic sensing (DFOS) strain measurements to estimate support reactions in beams through an experimental investigation that involved beam, model bridge, and field load tests. Five steel beams were instrumented with fibre optic sensors and …
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Dynamic Strain Measurement Using Brillouin Optical Time-Domain Reflectometry
… the Brillouin scattering based distributed fibre optic sensors have attracted significant attentions in recent decades. These sensors can quantitatively measure the distributed strain and temperature information along the optic fibre. The Brillouin optical time-domain reflectometry (BOTDR) …
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Cross sensitivity analysis of optical fibre-based sensing for high pressure, high temperature measurement in oil and gas applications.
… wells could reach beyond 300 °C and 20000 kPa. Fibre optic sensor developments have created new interest in oil and gas production monitoring and control. Fibre optic sensors currently deployed in the oil and gas industry can only operate up to 150 °C and even the most robust sensors are limited …
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Time-Frequency Localisation of Distributed Brillouin Optical Time Domain Reflectometry
Distributed fibre optic sensing (DFOS) is essential for structural health monitoring (SHM) of strain changes induced during the lifetime of a structure. Among different DFOS systems, the Brillouin Optical Time Domain Reflectometry (BOTDR) takes the advantages of obtaining full frequency spectrum to …
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Structural assessment of bridges using monitoring data
Despite decades of research, there has been relatively little industry uptake of structural health monitoring (SHM) technologies and model updating techniques, i.e., the integration of structural monitoring data with structural analysis modelling, in bridge operation and maintenance (O\&M) …
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Dynamic distributed monitoring of masonry railway bridges
Novel sensing technologies – for instance, fibre-optic Fibre Bragg Grating (FBG) sensors – offer engineers new means to study the dynamic distributed behaviour of complex structures, such as masonry arch bridges. These bridges, which are common features of many European transport networks, are …