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Title: Characterization of the crystal structure, kinematics, stresses and rotations in angular granular quartz during compaction

Journal Article · · Journal of Applied Crystallography (Online)

Three-dimensional X-ray diffraction (3DXRD), a method for quantifying the position, orientation and elastic strain of large ensembles of single crystals, has recently emerged as an important tool for studying the mechanical response of granular materials during compaction. Applications have demonstrated the utility of 3DXRD and X-ray computed tomography (XRCT) for assessing strains, particle stresses and orientations, inter-particle contacts and forces, particle fracture mechanics, and porosity evolution in situ . Although past studies employing 3DXRD and XRCT have elucidated the mechanics of spherical particle packings and angular particle packings with a small number of particles, there has been limited effort to date in studying angular particle packings with a large number of particles and in comparing the mechanics of these packings with those composed of a large number of spherical particles. Therefore, the focus of the present paper is on the mechanics of several hundred angular particles during compaction using in situ 3DXRD to study the crystal structure, kinematics, stresses and rotations of angular quartz grains. Comparisons are also made between the compaction response of angular grains and that of spherical grains, and stress-induced twinning within individual grains is discussed.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
USDOE; LLNL Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); National Inst. of Health (NIH) (United States)
Grant/Contract Number:
AC52-07NA27344; DMR-133208
OSTI ID:
1457589
Alternate ID(s):
OSTI ID: 1476174
Report Number(s):
LLNL-JRNL-740711; JACGAR; PII: S1600576718006957
Journal Information:
Journal of Applied Crystallography (Online), Journal Name: Journal of Applied Crystallography (Online) Vol. 51 Journal Issue: 4; ISSN 1600-5767
Publisher:
International Union of Crystallography (IUCr)Copyright Statement
Country of Publication:
Denmark
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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