Chapter
May 7, 2012
Displacement Measurements for Cyclic Triaxial Tests Using Digital Image Correlation
Authors: E. Montemayor and R. P. RayAuthor Affiliations
Publication: Site Characterization and Modeling
Abstract
Digital imaging and the Vic-3D program were used to measure deformations during a displacement-controlled cyclic triaxial test of a clay specimen confined by vacuum. Seven stages of testing, each of 50 cycles, were completed. Measurements from an LVDT and the Vic-3D image correlation program were compared using two methods: 1) A direct comparison of strains with estimated error bands and 2) A statistical test of coincidence of resilient modulus regression curves using a dummy variable model and an F-test. The Vic-3D program successfully replicated LVDT results. Both total and plastic strains exhibited similar trends and magnitudes. Resilient modulus curves were statistically coincident at the 99% confidence level.
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Published In
Site Characterization and Modeling
Pages: 1 - 10
Copyright
© 2005 American Society of Civil Engineers.
History
Published online: May 7, 2012
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ASCE Technical Topics:
- Continuum mechanics
- Correlation
- Cyclic tests
- Deformation (mechanics)
- Displacement (mechanics)
- Engineering fundamentals
- Engineering mechanics
- Errors (statistics)
- Geomechanics
- Geotechnical engineering
- Laboratory tests
- Mathematics
- Soil deformation
- Soil mechanics
- Soil properties
- Soil tests
- Solid mechanics
- Statistics
- Structural mechanics
- Tests (by type)
- Triaxial tests
Authors
Affiliations
E. Montemayor
Graduate student, Dept. of Civil and Environ. Engrg., University of South Carolina
R. P. Ray
Assoc. Prof., Dept. of Civil and Environ. Engrg., Univ. of South Carolina, 300 Main St, Columbia, SC, 29208
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