Theses and Dissertations from UMD

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New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

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Author: search.filters.author.Brandveen, Bianca ReneeSubject: search.filters.subject.composite

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    A Multi-Scale Approach for Characterizing the Mechanical Behavior of Pin-Reinforced Composite Sandwich Structures with Digital Image Correlation
    (2013) Brandveen, Bianca Renee; Bruck, Hugh A; Mechanical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    In the last 10 years, pin–reinforced composite sandwich structures have become an interesting research topic in aerospace and naval engineering because of their low weight and high compressive properties. Current models lack rigorous physical understanding of the mechanics of these structures and do not accurately predict their performance. This hybrid numerical–experimental research approach investigates the compressive and flexural mechanical behavior of these materials and also characterizes and models the mechanical response in the form of full–field displacements and strains using Digital Image Correlation (DIC). This thesis establishes an experimental mechanics characterization approach spanning several length scales, including: single pins, representative volume elements, contoured beams, and cylindrical shells with 6” radius of curvature. The previously assumed deformation response of pins within the composite was substantiated with 2D and 3D DIC and extrapolated to the macroscale for both straight and contoured composites.