Visualizing soil deformation in the undergraduate classroom using Digital Image Correlation (DIC)

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Abstract
  • It is typical for an introductory undergraduate course in geotechnical engineering to expose
    students to the subjects of lateral earth pressure and bearing capacity. An understanding of
    bearing capacity and lateral earth pressure is essential for the design of foundations, retaining
    walls, and anchoring systems. This paper describes ongoing work to develop equipment,
    software, and hands-on teaching activities that apply Digital Image Correlation (DIC) to enhance
    a student’s first exposure to lateral earth pressure and bearing capacity. The approach described
    herein enables students to observe the relationship between load acting on the soil and structural
    displacement for conditions similar to those of a loaded footing, retaining wall, or embedded
    ground anchor. The DIC system allows the students to see the magnitude, direction, and
    distribution of soil displacements. The ability to simultaneously observe load, structural
    displacement, and soil displacement provides a powerful teaching tool to show the connection
    between geotechnical analyses performed to estimate failure loads with analyses used to estimate
    deformations.
    In addition to discussing the proposed methodology and initial results, this paper provides
    relevant background information related to DIC, lateral earth pressure, and bearing capacity. A
    literature review was performed to compile previous efforts to use DIC as an educational tool in
    undergraduate engineering education. Proposed teaching activities are briefly outlined. A followup
    paper will discuss the proposed teaching activities in detail and the impacts on student learning.
TitleVisualizing soil deformation in the undergraduate classroom using Digital Image Correlation (DIC)
CreatorHelm, Jeffrey D.
McGuire, Michael P.
PublisherASEE Annual Conference and Exposition Proceedings
Academic DepartmentCivil & Environmental Engineering
Mechanical Engineering
DivisionEngineering
OrganizationLafayette College
Date Issued2015
Date Available2016-01-20T21:52:20Z
TypeArticle
LanguageEnglish
Bibliographic CitationMcGuire, M. P. and J. D. Helm. (2015) "Visualizing soil deformation in the undergraduate classroom using Digital Image Correlation (DIC)." ASEE Annual Conference and Exposition Proceedings. Paper 13758.
Standard IdentifierHandle 10385/2072
Permalinkhttp://hdl.handle.net/10385/2072
Rights Statement In Copyright In Copyright
Rights HoldersAmerican Society for Engineering Education
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