Application and validity of the Radon transform applied to axisymmetric neutron strain imaging

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dc.contributor.authorKirkwood, HJen_AU
dc.contributor.authorWensrich, CMen_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorAbbey, Ben_AU
dc.date.accessioned2021-02-12T05:55:23Zen_AU
dc.date.available2021-02-12T05:55:23Zen_AU
dc.date.issued2019-12-15en_AU
dc.date.statistics2021-02-11en_AU
dc.description.abstractNext generation pulsed neutron sources and wavelength dispersive imaging detectors are creating new opportunities for strain analysis. One such technique is Bragg edge transmission analysis in which projected measurements of the crystallographic properties of bulk polycrystalline samples are recorded on a time-of-flight area detector. The ability to measure the elastic strain field poses the question of whether it is possible to reconstruct a three-dimensional map of the elastic strain tensor from a set of lower order projection data. Here we present a fundamental exploration of the validity of axisymmetric strain reconstruction algorithms available for inverting Bragg edge data. The results demonstrate that the compatibility of the elastic strain field under investigation is critical in determining which algorithm may be successfully applied. Finally, a more robust approach to Radon transform strain tomography is presented based on the condition of zero total strain. ©2019 Elsevier Ltd.en_AU
dc.identifier.citationKirkwood, H. J., Wensrich, C. M., Paradowska, A. M., & Abbey, B. (2019). Application and validity of the Radon transform applied to axisymmetric neutron strain imaging. International Journal of Solids and Structures, 180-181, 137-146. doi:10.1016/j.ijsolstr.2019.07.019en_AU
dc.identifier.issn0020-7683en_AU
dc.identifier.journaltitleInternational Journal of Solids and Structuresen_AU
dc.identifier.pagination137-146en_AU
dc.identifier.urihttps://doi.org/10.1016/j.ijsolstr.2019.07.019en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10396en_AU
dc.identifier.volume180-181en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectBragg reflectionen_AU
dc.subjectTomographyen_AU
dc.subjectStrainsen_AU
dc.subjectWavelengthsen_AU
dc.subjectTime-of-flight methoden_AU
dc.subjectAlgorithmsen_AU
dc.subjectRadonen_AU
dc.titleApplication and validity of the Radon transform applied to axisymmetric neutron strain imagingen_AU
dc.typeJournal Articleen_AU
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