Fibre Bragg grating based effective soil pressure sensor for geotechnical applications

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Fibre_Bragg_grating_based_effective_soil_pressure-2009.pdf (2.35 MB)

Date

2009-12-31T00:00:00Z

Authors

Correia, Ricardo N.
Li, Jin
Staines, Stephen E.
Chehura, Edmon
James, Stephen W.
Tatam, Ralph P.
Kutner, Joel
Dewhurst, Paul
Ferreira, Pedro

Supervisor/s

Journal Title

Journal ISSN

Volume Title

Publisher

International Society for Optical Engineering; 1999

Department

Type

Conference paper

ISSN

0277-786X

Format

Free to read from

URI

http://dx.doi.org/10.1117/12.835751
 http://dspace.lib.cranfield.ac.uk/handle/1826/7086

Citation

Ricardo Correia, Jin Li, Stephen Staines, Edmon Chehura, Stephen W. James, Joel Kutner, Paul Dewhurst, Pedro Ferreira and Ralph P. Tatam, Fibre Bragg grating based effective soil pressure sensor for geotechnical applications, 20th International Conference on Optical Fibre Sensors Proc. SPIE 7503, 75030F (2009); 5 October 2009 Edinburgh, United Kingdom

Abstract

An effective-soil-pressure sensor for geotechnical applications based on Fibre Bragg Gratings is presented. The sensor simultaneous measures total soil pressure and pore pressure, allowing the calculation of the effective stress of soil. Calibration of the sensor using pressurised air demonstrated a pressure sensitivity of 2.02x10 ± 2.84x10nm/kPa and 1.87x10 ± 6.88x10nm/kPa for the total and pore pressure respectively. This corresponds to a pressure resolution of 4.95x10 kPa and 5.46x10kPa for total and pore pressure using a 1pm interrogation system. Measurements undertaken in two types of soil demonstrated dependence of the total pressure sensitivity on soil density/stiffness. Pore pressure measurements agreed well with the preliminary calibratio

Description

Software Description

Software Language

Github

Keywords

Effective soil stress, Fibre Bragg Grating, Pore pressure, Total soil pressure

DOI

Rights

Copyright © 2009 Society of Photo-Optical Instrumentation Engineers. This paper was published in SPIE 7503 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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