A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fiber Optic Sensored Geotechnical Testing and Field Monitoring
Over the past few decades, many optical fiber sensing techniques have been developed. Among these available sensing methods, optical fiber Bragg grating (FBG) is probably the most popular. With its unique capabilities, FBG based geotechnical sensors can be used as a sensor array for distributive (profile) measurements, deployed under water (submersible), for localized high resolution and/or differential measurements. The authors have developed a series of FBG based transducers that include load cells, linear displacement transducers and gauge/differential pore-pressure sensors. These transducers have been integrated into a fully FBG sensored triaxial device. Field in situ testing devices that include pre-bored pressuremeter (PMT), flat dilatometer (DMT) and a piezo-penetrometer have been incorporated with FBG sensors. Techniques that involve the field installation of FBG inclinometer and pore-pressure sensor arrays for automated slope stability monitoring have been developed. This paper provides a brief background of FBG and the design concepts behind the FBG based laboratory, in situ testing and field monitoring sensors. Case histories that include: PMT and triaxial tests on unsaturated soils, field differential pressure piezometer and DMT to characterize a reservoir sediment under 40m of water, and fully automated slope stability monitoring with FBG in place inclinometer and pore pressure arrays are presented. Implications in geotechnical testing and monitoring are discussed.
Fiber Optic Sensored Geotechnical Testing and Field Monitoring
Over the past few decades, many optical fiber sensing techniques have been developed. Among these available sensing methods, optical fiber Bragg grating (FBG) is probably the most popular. With its unique capabilities, FBG based geotechnical sensors can be used as a sensor array for distributive (profile) measurements, deployed under water (submersible), for localized high resolution and/or differential measurements. The authors have developed a series of FBG based transducers that include load cells, linear displacement transducers and gauge/differential pore-pressure sensors. These transducers have been integrated into a fully FBG sensored triaxial device. Field in situ testing devices that include pre-bored pressuremeter (PMT), flat dilatometer (DMT) and a piezo-penetrometer have been incorporated with FBG sensors. Techniques that involve the field installation of FBG inclinometer and pore-pressure sensor arrays for automated slope stability monitoring have been developed. This paper provides a brief background of FBG and the design concepts behind the FBG based laboratory, in situ testing and field monitoring sensors. Case histories that include: PMT and triaxial tests on unsaturated soils, field differential pressure piezometer and DMT to characterize a reservoir sediment under 40m of water, and fully automated slope stability monitoring with FBG in place inclinometer and pore pressure arrays are presented. Implications in geotechnical testing and monitoring are discussed.
Fiber Optic Sensored Geotechnical Testing and Field Monitoring
Huang, An-Bin (author) / Ho, Yen-Teh (author) / Lee, Jui-Ting (author) / Wang, Chien-Chih (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Sound Geotechnical Research to Practice ; 382-404
2013-02-25
Conference paper
Electronic Resource
English
Fiber Optic Sensored Geotechnical Testing and Field Monitoring
| British Library Conference Proceedings | 2013
A Fiber Optic Sensored Triaxial Testing Device
| Online Contents | 2011
A Fiber Optic Sensored Triaxial Testing Device
| British Library Online Contents | 2011