Measuring soil strains using fiber optic sensors

Craig Emerson Miller; M. G. Sharma; James A. Sherwood

doi:10.1117/12.238845

22 April 1996 Measuring soil strains using fiber optic sensors

Craig Emerson Miller, M. G. Sharma, James A. Sherwood

Proceedings Volume 2719, Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways; (1996) https://doi.org/10.1117/12.238845
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

The measurement of strain within a compacted soil mass using optical fibers was demonstrated. The sensitivity of the fiber optic sensor was shown to match that of an existing soil strain sensor. Experimental data were gathered by dynamically loading the soil. Data from the optical fibers was processed by a Fabry-Perot interferometer into a localized strain. The data was verified by comparing with data obtained from a LVDT and a commercial soil strain sensor as well as theoretical data obtained from a finite element analysis. The data indicate that fiber optic sensors have the ability to detect viscoelastic soil strains and may be used to measure the permanent deformation of soil.

Citation Download Citation

Craig Emerson Miller, M. G. Sharma, and James A. Sherwood "Measuring soil strains using fiber optic sensors", Proc. SPIE 2719, Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways, (22 April 1996); https://doi.org/10.1117/12.238845

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