Calibrations of the Innovative S3F Sensor for Shear Stress Measurements in Soil
Publication: Tran-SET 2022
ABSTRACT
Surface stress sensitive film (S3F) is a new technique for measurement of shear and normal stresses. Using such innovative sensor in geotechnical engineering applications could accurately measure the interfacial friction between the structure and surrounding soil, which is crucial to understand the soil-structure interaction of various buried civil structures. In this study, a method for the shear stress calibration of the S3F sensor was proposed. The effect of the loading area on the shear stress calibration curves was investigated. And the performance of the sensor in measuring the shear stresses at the soil-structure interface was assessed. The test’s result revealed that the slope of the shear stress calibration curve is independent from the diameter of the loading area. The S3F sensor also showed its ability to measure shear stresses under loading/unloading conditions, as long as the applied shear stress is less than the yielding stress of the S3F film.
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Tran-SET 2022
Pages: 166 - 172
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Published online: Dec 13, 2022
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