3D strain mapping inside materials by microstructural tracking in tomographic volumes

H. Toda, M. Kobayashi, K. Uesugi, D. S. Wilkinson, T. Kobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

X-ray absorption microtomography has been employed to trace the physical displacement of internal microstructural features in order to obtain local strain distribution inside materials. The number of microstructural features visible by means of state-of-the-art synchrotron radiation microtomography sometimes reaches into the tens of thousands or more in ordinary structural materials. It implies that high-density strain mapping is enabled if such large-scale tracking is accurately performed. The present paper describes a method to accurately track microstructural features by utilising the information on the size, shape and gravity centre of microstructural features together with the spring model particle tracking algorithm and exploratory registration using macroscopic deformation pattern. A model material which contains artificially introduced micro-pores has been prepared and used for the investigation. It has been clarified that almost perfect tracking is realised if the procedure is adequately applied to 3D image data sets. 3D internal strain mapping is also demonstrated and correlated to the localised ductile fracture of the model material.

Original languageEnglish
Title of host publicationComputational Methods and Experiments in Materials Characterisation III
Pages177-186
Number of pages10
DOIs
Publication statusPublished - Dec 1 2007
Externally publishedYes
Event3rd International Conference on Computational Methods and Experiments in Material Characterisation 2007 - Bologna, Italy
Duration: Jun 13 2007Jun 15 2007

Publication series

NameWIT Transactions on Engineering Sciences
Volume57
ISSN (Print)1743-3533

Other

Other3rd International Conference on Computational Methods and Experiments in Material Characterisation 2007
CountryItaly
CityBologna
Period6/13/076/15/07

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All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Materials Science(all)
  • Mechanics of Materials
  • Fluid Flow and Transfer Processes
  • Electrochemistry

Cite this

Toda, H., Kobayashi, M., Uesugi, K., Wilkinson, D. S., & Kobayashi, T. (2007). 3D strain mapping inside materials by microstructural tracking in tomographic volumes. In Computational Methods and Experiments in Materials Characterisation III (pp. 177-186). (WIT Transactions on Engineering Sciences; Vol. 57). https://doi.org/10.2495/MC070181