In situ measurement of the strains within a mechanically loaded polygranular graphiteReport as inadecuate




In situ measurement of the strains within a mechanically loaded polygranular graphite - Download this document for free, or read online. Document in PDF available to download.

Reference: Marrow, TJ, Liu, D, Barhli, SM et al., (2016). In situ measurement of the strains within a mechanically loaded polygranular graphite. Carbon, 96, 285-302.Citable link to this page:

 

In situ measurement of the strains within a mechanically loaded polygranular graphite

Abstract: Neutron diffraction and synchrotron X-ray diffraction and imaging have been applied to study, in situ, the mechanical response to tensile and bending loading of polygranular Gilsocarbon nuclear grade near-isotropic graphite (grade IM1-24). Digital image correlation of X-ray radiographs and digital volume correlation of tomographs allow measurement of bulk elastic moduli and examination of the heterogeneity of deformation in the microstructure. Both the neutron and X-ray studies show the application of tensile strain reduces the bulk elastic modulus. A permanent set is observed to develop with applied tensile strain. The elastic strains within the graphite crystals were measured by diffraction; a cross-correlation analysis method has been applied for greater speed, robustness and improved precision in the measurement of the change in basal plane separation distance. In compression, a linear relation is observed between the elastic strains in the graphite crystals and the applied strain. In tension, this relationship is non-linear. The results are discussed with respect to the distribution of elastic and inelastic strain within the graphite microstructure. It is deduced that the significant residual elastic strains in the as-manufactured graphite are relaxed by microcracking as tensile strain is applied.

Peer Review status:Peer reviewedPublication status:PublishedVersion:Publisher's version Funder: Engineering and Physical Science Research Council   Funder: Oxford Martin School (Nuclear Programme)   Funder: EDF Energy   Funder: Wolfson College, Oxford   Notes:© 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Bibliographic Details

Publisher: Elsevier

Publisher Website: http://www.sciencedirect.com/

Journal: Carbonsee more from them

Publication Website: http://www.sciencedirect.com/science/journal/00086223

Issue Date: 2016-1

Article Number:C

pages:285-302Identifiers

Urn: uuid:9eb2d306-6dc1-4677-b69f-ddee08c414d5

Source identifier: 580966

Doi: https://doi.org/10.1016/j.carbon.2015.09.058

Issn: 0008-6223 Item Description

Type: Journal article;

Version: Publisher's version Tiny URL: pubs:580966

Relationships





Author: Marrow, TJ - institutionUniversity of Oxford Oxford, MPLS, Materials - - - Liu, D - - - Barhli, SM - institutionUniversity of Oxf

Source: https://ora.ox.ac.uk/objects/uuid:9eb2d306-6dc1-4677-b69f-ddee08c414d5



DOWNLOAD PDF




Related documents