Displacement measurement using image analysis in centrifuge modeling of slopes

A new displacement measuring system was presented and applied in centrifuge model tests on soil slopes.The non-contact measuring system was developed based on the correlation-based image analysis to measure the displacements of a soil slope in centrifuge tests.The histories of displacement fields of soil slopes in centrifuge were automatically measured.The measured results exhibited a good regularity.The measuring system was verified to effectively measure the displacement at any spot of a slope at any time with accuracy in centrifuge.It was shown that the deformation was concentrated due to loading,which demonstrated the occurrences of strain localization in the slope.The strain localization had a close relation with the failure process.