High-resolution strain mapping through time-of-flight neutron transmission diffraction

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dc.contributor.authorTremsin, ASen_AU
dc.contributor.authorMcPhate, JBen_AU
dc.contributor.authorVallerga, JVen_AU
dc.contributor.authorSiegmund, OHWen_AU
dc.contributor.authorKockelmann, Wen_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorZhang, SYen_AU
dc.contributor.authorKelleher, JFen_AU
dc.contributor.authorSteuwer, Aen_AU
dc.contributor.authorFeller, WBen_AU
dc.date.accessioned2015-11-01T00:32:48Zen_AU
dc.date.available2015-11-01T00:32:48Zen_AU
dc.date.issued2013-11-21en_AU
dc.date.statistics2015-10-22en_AU
dc.description.abstractThe spatial resolution of time of flight neutron transmission diffraction was recently improved by the extension of photon/electron counting technology to imaging of thermal and cold neutrons. The development of novel neutron sensitive microchannel plates enables neutron counting with spatial resolution of ~55 um and time-of-flight accuracy of ~1 us, with efficiency as high as 70% for cold and ~40% for thermal neutrons. The combination of such a high resolution detector with a pulsed collimated neuron beam provides the opportunity to obtain a 2-dimensional map of neutron transmission spectra in one measurement. The results of our neuron transmission measurements demonstrate that maps of strains integrated along the beam propagation direction can be obtained with ~100 microstrain accuracy and spatial resolution of ~100 um providing there are sufficient neutron events collected. In this paper we describe the capabilities of the MCP neutron counting detectors and present the experimental results of 2-dimensional strain maps within austenitic steel compact tension (CT) crack samples measured at the ENGIN-X beamline of the ISIS pulsed neutron source. © 2014, Trans Tech Publications.en_AU
dc.identifier.citationTremsin, A. S., McPhate, J. B., Vallerga, J. V., Siegmund, O. H. W., Kockelmann, W., Paradowska, A., Zhang, S. Y., Kelleher, J., Steuwer, A., & Feller, W. B. (2013). High-resolution strain mapping through time-of-flight neutron transmission diffraction. Materials Science Forum, 772, 9-13. doi:10.4028/www.scientific.net/MSF.772.9en_AU
dc.identifier.govdoc6209en_AU
dc.identifier.issn0255-5476en_AU
dc.identifier.journaltitleMaterials Science Forumen_AU
dc.identifier.pagination9-13en_AU
dc.identifier.urihttp://dx.doi.org/10.4028/www.scientific.net/MSF.772.9en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6366en_AU
dc.identifier.volume772en_AU
dc.language.isoenen_AU
dc.publisherTrans Tech Publicationsen_AU
dc.subjectSpatial resolutionen_AU
dc.subjectThermal neutronsen_AU
dc.subjectCold neutronsen_AU
dc.subjectSpatial resolutionen_AU
dc.subjectBioelectricityen_AU
dc.subjectStrainsen_AU
dc.titleHigh-resolution strain mapping through time-of-flight neutron transmission diffractionen_AU
dc.typeJournal Articleen_AU
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