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3D deformation and strain analysis in compacted sugar using x-ray microtomography and digital volume correlation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-7395-3302
University of Oxford.
2009 (English)In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 20, no 9Article in journal (Refereed) Published
Abstract [en]

Understanding the displacement of granular beds under compaction is important for a range of industrial, geological and civil engineering applications. Such materials exhibit inhomogeneous internal displacements including strain localization, which mean that a method for the in situ evaluation of internal 3D displacement fields at high spatial resolutions would be a major development. This paper presents results from the compaction of a cylindrical bed of sugar, with diameter 7.0 mm and height 8.2 mm, using x-ray microtomography to evaluate the internal structure and digital volume correlation to calculate 3D displacement information from these data. In contrast to previous studies, which generally track a small number of marker particles, the research here uses the natural structure of the sugar to provide a random pattern for 3D image correlation, allowing full-field information to be captured. The results show good agreement when compared with a well-established 2D image correlation technique; moreover, they indicate structural features associated with deformation of granular materials that would not necessarily be observed in a 2D slice.

Place, publisher, year, edition, pages
2009. Vol. 20, no 9
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-13234DOI: 10.1088/0957-0233/20/9/095703ISI: 000269180300030Scopus ID: 2-s2.0-70350690439Local ID: c6b79070-889f-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-13234DiVA, id: diva2:986186
Note

Validerad; 2009; Bibliografisk uppgift: Paper ID: 095703; 20090814 (fred)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Forsberg, Fredrik

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