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SUMMARY:High Resolution Imaging and Strain Characterisation at Pulsed Neut
 ron Sources with a Microchannel plate detector
DTSTART:20141121T012500Z
DTEND:20141121T014500Z
DTSTAMP:20260909T042200Z
UID:indico-contribution-708@events.synchrotron.org.au
DESCRIPTION:Speakers: Brian Abbey (ARC COE Advanced Molecular Imaging)\, A
 lexander Korsunsky (Oxford University\, Oxford\, UK)\, Anton Tremsin (Spac
 e Sciences Laboratory\, University of California\, Berkely\, USA)\, Shu Ya
 n Zhang (Science & Technology Facilities Council\, Rutherford Appleton Lab
 oratory\, Harwell\, Oxfordshire\, UK)\, Henry Kirkwood (ARC COE Advanced M
 olecular Imaging - La Trobe University)\n\nRecent advances in neutron dete
 ction technology are enabling collection of neutron transmission data with
  unprecedented spatial and time resolution [1\,2]. Microchannel plates cou
 pled with TimePix area detectors are now being used to perform time-of-fli
 ght neutron radiography experiments at 55 micron2 spatial resolution and 1
  &mus temporal resolution. These sensors are suited to a diverse range of 
 neutron studies such as microtomography of material composition or phase a
 nd strain tomography [2\,3\,4].\nIn neutron time-of-flight transmission ex
 periments each neutron arriving at the detector is tagged with its arrival
  time\, this allows the determination of the energy-resolved transmission 
 spectrum from the known time structure of the incident pulse. Variation of
  these transmission spectra can be used to obtain spatially-resolved maps 
 of projected crystallographic properties within polycrystalline materials\
 ; such as average elastic strain\, plastic strain\, texture and grain size
  distributions. \nHere\, we present results from a recent experiment at th
 e Engin-X beamline\, ISIS\, UK. The transmission spectrum of an additively
  manufactured jet engine turbine blade was measured and used to determine 
 spatially-resolved maps of the average elastic strain in the transmission 
 direction. This is a sample of intrinsic scientific interest due to questi
 ons that remain about the residual strains imparted during fabrication com
 pared to those manufactured conventionally.\n \n[1] Tremsin et al. Nuc. In
 str. Meth. Phys. A 2012\n[2] Zhang et al. Mat. Today 2009\n[3] Abbey et al
 . Procedia Engineering 2009 \n[4] Kirkwood et al. Trans. American Crystall
 ographic Association 2013\n\nhttps://events.synchrotron.org.au/event/3/con
 tributions/708/
LOCATION:Conference Room AS
RELATED-TO:indico-event-3@events.synchrotron.org.au
URL:https://events.synchrotron.org.au/event/3/contributions/708/
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