2026-09-22T01:14:59Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/83918 2023-07-11 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Armand Beaudoin Iwona Jasiuk Padilla, Henry Allen, II 2015-09-25T21:12:43Z 2015-09-25T21:12:43Z 10000-01-01 2008 2008 The adiabatic compression of metals in the split-Hopkinson pressure bar is associated with a rise in temperature due to the dissipation of work energy. High strain rate compression experiments on zirconium are carried out to investigate a possible dependence of dissipation on deformation mechanism. No correlation is found between deformation twinning and energy dissipation, and the appearance of energy storage in basal textured polycrystals is explained by the presence of localized deformation. Experimental and numerical techniques are used to study the microstructural origins of an inhomogeneous response and the multiscale nature of its development. In situ full field thermography and digital image correlation (DIC) complement post-mortem microscopy in identifying micro- and macroscale inhomogeneity at small, moderate and large strains. Qualitative and quantitative correlations between local texture and local (DIC measured) strain fields indicate that the slip-restricted nature of zirconium, the strong texture of cross-rolled plate, and the particular chemistry of the zirconium studied lead to an inhomogeneous response at nearly every length scale observed in basal textured polycrystals. Made available in DSpace on 2015-09-25T21:12:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3337874.pdf: 3610165 bytes, checksum: 8febe8bc7f6edbab6fd95b5c497ddc4b (MD5) Previous issue date: 2008 Embargo set by: Seth Robbins for item 85199 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 160 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008. http://hdl.handle.net/2142/83918 (MiAaPQ)AAI3337874 eng Applied Mechanics Multiscale Experimental Study on the Effect of Texture and Anisotropy on the Thermomechanical Response of Zirconium text Mechanical Engineering Mechanical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.