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X-ORIGINAL-URL:https://www.fst.um.edu.mo
X-WR-CALDESC:Events for Faculty of Science and Technology | University of Macau
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TZID:Asia/Macau
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TZOFFSETFROM:+0800
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DTSTART:20160101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Macau:20161205T110000
DTEND;TZID=Asia/Macau:20161205T120000
DTSTAMP:20260610T103610
CREATED:20161202T040023Z
LAST-MODIFIED:20251125T032019Z
UID:16235-1480935600-1480939200@www.fst.um.edu.mo
SUMMARY:Observing grain crushing using 3D X-ray microfocus computer tomography images
DESCRIPTION:Speaker\nDr. Ryan Wai Man YAN\nSenior Lecturer\nDepartment of Civil and Environmental Engineering\nUniversity of Auckland\nNew Zealand \nAbstract\nBreakage in granular material has gained more research attention recently. This grain scale behavior would cause significant change to the macroscopic response. The development of x-ray micro-tomography technique makes it possible to non-destructively examine the microstructure of an assemblage at different stages of loading. In this talk\, a 3D micro-focused X-ray CT study will be presented. CT images are used to visualize the development of grain crushing under one-dimensional compression. Initially uniformly graded carbonate grains are prepared into a tailor-made oedometric cell such that X-ray CT scanned images can be taken at different stages (loading and unloading) of the test. State-of-the-art image processing technique has been developed to isolate individual grains from the assemblage. Particulate-scale information including particle size distribution and particle shape characteristics is evaluated from the processed images and the results are compared with other available methods in the literature \nBiography\nDr Ryan Yan is currently a Senior Lecturer in the Department of Civil and Environmental Engineering at the University of Auckland. Prior to moving to New Zealand\, he had been an Assistant Professor at the University of Hong Kong and University of Macau for totally more than 10 years. His current research interests include constitutive and numerical modeling of geomaterials\, grain-scale micromechanics\, geotechnical process monitoring\, and application of Bayesian inference to geotechnical engineering. Ryan is a chartered member of the Hong Kong Institution of Engineers (Geotechnical). He was the recipient of ICACM Young Investigator Award presented by the International Chinese Association for Computational Mechanics in 2013.
URL:https://www.fst.um.edu.mo/event/observing-grain-crushing-using-3d-x-ray-microfocus-computer-tomography-images/
LOCATION:E11-1035
CATEGORIES:cee_events
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