Journal
ACTA MATERIALIA
Volume 103, Issue -, Pages 12-22Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2015.09.051
Keywords
Shear localization; Anisotropy; Microstructure; Sample geometry
Funding
- National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396]
- Joint DoD/DOE Munitions Technology Development Program
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A new specimen geometry, the compact forced-simple-shear specimen (CFSS), has been developed as a means to achieve simple shear testing of materials over a range of temperatures and strain rates. The stress and strain state in the gage section is designed to produce essentially pure simple shear, mode II in-plane shear, in a compact-sample geometry. The 2-D plane of shear can be directly aligned along specified directional aspects of a material's microstructure of interest; i.e., systematic shear loading parallel, at 45 degrees, and orthogonal to anisotropic microstructural features in a material such as the pancakeshaped grains typical in many rolled structural metals, or to specified directions in fiber-reinforced composites. The shear-stress shear-strain response and the damage evolution parallel and orthogonal to the pancake grain morphology in 7039-Al are shown to vary significantly as a function of orientation to the microstructure. (c) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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