The University of Southampton
Engineering and the Environment

Research project: Seeing the deformations inside solids

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While most of the deformation imaging techniques deal with surface information, some new methods enable to provide deformation inside solids.

Project Overview

The most common route to do this is to use an X-ray radiography technique to map the structure of the material. By rotating a sample and taking many 2D radiographs, it is possible to reconstruct a 3D image, as in Figure 1.

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Fig. 1

Provided the material reconstructed volumes exhibit ‘patterns’, as in Figure 1 for bone, then this pattern can be used in conjunction with a volume correlation algorithm to provide 3D maps of deformation inside the solid. This also works nicely with foams, as demonstrated in http://eprints.soton.ac.uk/id/eprint/357208.

 

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Fig. 2

It is also possible to use volumes reconstructed from other volume imaging techniques like Optical Coherence Tomography. This is illustrated in Figures 3-5 below.

 

 

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Fig. 3
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Fig. 4
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Fig. 5

Sponsor: Chinese Scholarship Council

References
http://eprints.soton.ac.uk/id/eprint/357208
Fu J., Pierron F., Ruiz P.D., 3D Full-field deformation measurement using optical coherence tomography and digital volume correlation, Journal of Biomedical Optics, in revision, 2013.
Gillard F., Boardman R., Mavrogordato M., Hollis D., Sinclair I., Pierron F., Browne M., The application of digital volume correlation (DVC) to study the microstructural behaviour of trabecular bone during compression, Journal of the Mechanical Behaviour of Biomedical Materials, accepted, 2013.

Related research groups

Engineering Materials

Staff

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