Wael Z. Abuzaid

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This paper introduces an experimental methodology for obtaining high resolution full-field strain measurements in polycrystalline metals. The (sub)grain level resolution of these measurements was indispensable for relating measured strain fields to observed microstructure in the material. Microstructural information was obtained through electron backscatter(More)
In polycrystalline metals, local deformation heterogeneities induced by the microstructure influence fatigue crack initiation and micro-crack propagation. The localization in plastic strains associated with heterogeneous deformation has been described as a necessary condition and a precursor for the nucleation of fatigue cracks. However, a clear and(More)
Grain boundaries induce heterogeneities in the deformation response of polycrystals. Studying these local variations in response, measured through high resolution strain measurement techniques, is important and can improve our understanding of fatigue damage initiation in the vicinity of grain boundaries and material hardening. In this work, strain fields(More)
http://dx.doi.org/10.1016/j.ijplas.2014.09.001 0749-6419/ 2014 Elsevier Ltd. All rights reserved. ⇑ Corresponding author. Tel.: +1 217 333 2242; fax: +1 217 244 0720. E-mail address: lambros@illinois.edu (J. Lambros). 1 Present address: Applied Materials Inc., Sunnyvale, CA, United States. 2 Present address: Intel Corporation, Hillsboro, OR, United States.(More)
Fatigue crack growth is a complex process that involves interactions between many elements ranging across several length scales. This work provides an in-depth, experimental study of fatigue crack growth and the relationships between four of these elements: strain field, microstructure, crack path, and crack growth rate. Multiple data sets were acquired for(More)
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