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Three Dimensional Characterization of Microstructural Effects on Spall Damage in Shocked Polycrystalline Copper


Abstract Shock loading is a complex phenomenon that can lead to failure mechanisms such as strain localization, void nucleation and growth, and eventually spall fracture. The length scale of damage with respect to that of the surrounding microstructure has proven to be a key aspect in determining sites of failure initiation. Studying incipient stages of spall damage is of paramount importance to accurately determine initiation sites in the material microstructure where damage will nucleate and grow and to formulate continuum models that account for the variability of the damage process due to microstructural heterogeneity, which is the focus of this research. Shock loading experiments were conducted via flyer-plate impact tests for pressures of 2-6 ... (more)
Created Date 2015
Contributor Brown, Andrew David (Author) / Peralta, Pedro (Advisor) / Peralta, Pedro (Committee member) / Mignolet, Marc (Committee member) / Sieradzki, Karl (Committee member) / Solanki, Kiran (Committee member) / Jiang, Hanqing (Committee member) / Arizona State University (Publisher)
Subject Mechanical engineering / Materials Science / EBSD / Grain Boundary Misorientation / Shock Loading / Spall Damage / Taylor Factor / X-Ray Tomography
Type Doctoral Dissertation
Extent 199 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Mechanical Engineering 2015
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis