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Title: Compact forced simple-shear sample for studying shear localization in materials

Abstract

In this paper, 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°, and orthogonal to anisotropic microstructural features in a material such as the pancake-shaped grains typical in many rolled structural metals, or to specified directions in fiber-reinforced composites. Finally, 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.

Authors:
 [1];  [2];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Science and Technology Division
  2. Univ. of California, San Diego, CA (United States). Dept. of NanoEngineering
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOD
Contributing Org.:
Univ. of California, San Diego, CA (United States)
OSTI Identifier:
1329865
Alternate Identifier(s):
OSTI ID: 1398075
Report Number(s):
LA-UR-15-24244
Journal ID: ISSN 1359-6454
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 103; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Shear localization; Anisotropy; Microstructure; Sample geometry

Citation Formats

Gray, George Thompson, Vecchio, K. S., and Livescu, Veronica. Compact forced simple-shear sample for studying shear localization in materials. United States: N. p., 2015. Web. doi:10.1016/j.actamat.2015.09.051.
Gray, George Thompson, Vecchio, K. S., & Livescu, Veronica. Compact forced simple-shear sample for studying shear localization in materials. United States. https://doi.org/10.1016/j.actamat.2015.09.051
Gray, George Thompson, Vecchio, K. S., and Livescu, Veronica. Fri . "Compact forced simple-shear sample for studying shear localization in materials". United States. https://doi.org/10.1016/j.actamat.2015.09.051. https://www.osti.gov/servlets/purl/1329865.
@article{osti_1329865,
title = {Compact forced simple-shear sample for studying shear localization in materials},
author = {Gray, George Thompson and Vecchio, K. S. and Livescu, Veronica},
abstractNote = {In this paper, 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°, and orthogonal to anisotropic microstructural features in a material such as the pancake-shaped grains typical in many rolled structural metals, or to specified directions in fiber-reinforced composites. Finally, 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.},
doi = {10.1016/j.actamat.2015.09.051},
journal = {Acta Materialia},
number = ,
volume = 103,
place = {United States},
year = {Fri Nov 06 00:00:00 EST 2015},
month = {Fri Nov 06 00:00:00 EST 2015}
}

Journal Article:

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Cited by: 28 works
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Works referencing / citing this record:

Microscale shear specimens for evaluating the shear deformation in single-crystal and nanocrystalline Cu and at Cu–Si interfaces
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A comparison of adiabatic shear bands in wrought and additively manufactured 316L stainless steel using nanoindentation and electron backscatter diffraction
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