Results 11 to 20 of about 30,180 (277)

Thermal management of solar photovoltaic panels using a fibre Bragg grating sensor-based temperature monitoring

open access: yesCase Studies in Thermal Engineering, 2022
Solar photovoltaic (PV) performance is affected by increased panel temperature. Maintaining an optimal PV panel temperature is essential for sustaining performance and maximizing the productive life of solar PV panels. Current temperature sensors possess
Samiappan Dhanalakshmi   +6 more
doaj   +1 more source

Investigation on the Influence of Humidity on Stimulated Brillouin Backscattering in Perfluorinated Polymer Optical Fibers

open access: yesSensors, 2018
In this paper perfluorinated graded-index polymer optical fibers are characterized with respect to the influence of relative humidity changes on spectral transmission absorption and Rayleigh backscattering.
Andy Schreier   +3 more
doaj   +1 more source

Sewerage tunnel leakage detection using a fibre optic moisture-detecting sensor system [PDF]

open access: yes, 2014
The design and development of a new fibre optic sensor system for the optical detection of leakages in sewerage tunnels is reported. The system developed overcomes the disadvantages of the usually employed camera based inspection systems which are ...
Bremer, K.   +6 more
core   +1 more source

In-sewer field-evaluation of an optical fibre-based condition monitoring system [PDF]

open access: yes, 2020
A Fiber Bragg Grating (FBG) based monitoring system for continuous humidity and temperature measurement has been designed and evaluated experimentally in a sewer environment with high corrosion rates, humidity and the presence of gaseous hydrogen sulfide.
Bustamante, H.   +6 more
core   +1 more source

The Present and Future Status of Fibre Optic Sensors in Industry

open access: yesMeasurement + Control, 1987
The applicational requirements of sensors for the industrial market are discussed. The advantages and disadvantages of fibre optic industrial sensors are reviewed against these requirements and against the competitive advantages of electronic sensors. It
R S Medlock
doaj   +1 more source

Humidity Sensing by Chitosan-Coated Fibre Bragg Gratings (FBG)

open access: yesSensors, 2021
In this work, we report novel relative humidity sensors realized by functionalising fibre Bragg gratings with chitosan, a moisture-sensitive biopolymer never used before for this kind of fibre optic sensor.
Rosaria D’Amato   +3 more
doaj   +1 more source

Enhancing fibre-optic distributed acoustic sensing capabilities with blind near-field array signal processing

open access: yesNature Communications, 2022
Here, the authors demonstrate a blind and sparse near-field array signal processing approach to enhance the measurement quality of fibre-optic distributed acoustic sensors. It further enables the accurate estimation of the spatial coordinates of acoustic
Felipe Muñoz, Marcelo A. Soto
doaj   +1 more source

RTM production monitoring of the A380 hinge arm droop nose mechanism: a multi-sensor approach [PDF]

open access: yes, 2016
his research presents a case study of production monitoring on an aerospace composite component: the hinge arm of the droop nose mechanism on the Airbus A380 wing leading edge.
Chiesura, Gabriele   +7 more
core   +2 more sources

Development of low cost packaged fibre optic sensors for use in reinforced concrete structures [PDF]

open access: yes, 2019
There is an ongoing need to measure strains in reinforced concrete structures more reliably and under a range of circumstances e.g. long term durability (such as effects of cracking and reinforcement corrosion), response to normal working loads and ...
Banerji, P.   +6 more
core   +1 more source

Advances in fibre optic based geotechnical monitoring systems for underground excavations

open access: yesInternational Journal of Mining Science and Technology, 2019
Geotechnical stability is a major concern for the long-term safety and integrity of underground infrastructures such as tunnels, railway stations, mine shafts and hydraulic power chambers.
Hongkui Gong   +5 more
doaj   +1 more source

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