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Characterization of Granular Material Composite Structures Using Computerized Tomography

by Xiaogong Lee, Applied Research Associates, Inc, Tyndall AFB, United States,
William C. Dass, Applied Research Associates, Inc, Tyndall AFB, United States,
Charles W. Manzione, Applied Research Associates, Inc, Tyndall AFB, United States,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

The behavior of particulate composites such as asphaltic concrete is controlled by microstructural features including particle and binder arrangements, interparticle contacts, and changes in these composite structures under load. Defining parameters to describe microstructures is crucial to the development of micromechanical models. Computerized tomography (CT) offers an ideal method for non-intrusively examining internal composite structures. In this study, a high resolution industrial CT machine is used to acquire digital image data. Image processing techniques are developed to analyze the data and quantify composite structures.

Subject Headings: Composite structures | Granular materials | Concrete structures | Materials processing | Structural analysis | Radiography | Material tests

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