Abstract
A vertical smooth blade with an array of strain gauges was designed to dynamically measure mechanicalimpedance of soil at multiple depths. As the blade (tapered cantilevered beam) cuts through the soil, strain gauges detectdeformation caused by varying soil resistance. Recorded strain data was used to estimate resistance pressure at differentdepths that caused the same deformation of the blade with known geometry and material properties. Verification of theanalytical solution was performed in the laboratory by applying varying combinations of static loads. Field experimentsinvolved onthego measurement of soil resistance coordinated using the global positioning system (GPS). Integratedresistance pressures were compared to cone penetrometer readings obtained from the same area within the field.
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