Abstract
X-ray microtomography (XMT) has been utilized for the in-situ observation of various structural materials under external disturbance such as loading. In-situ XMT provides a unique possibility to access the three-dimensional (3D) character of internal microstructure and its time evolution behaviours non-destructively, thereby enabling advanced techniques for measuring local strain distribution. Local strain mapping is readily enabled by processing such high-resolution tomographic images either by the particle tracking technique or the digital image correlation technique. Procedures for tracking microstructural features which have been developed by the authors, have been applied to analyse localised deformation and damage evolution in a material. Typically several tens of thousands of microstructural features, such as particles and pores, are tracked in a tomographic specimen (0.2 - 0.3 mm 3 in volume). When a sufficient number of microstructural features is dispersed in 3D space, the Delaunay tessellation algorithm is used to obtain local strain distribution. With these techniques, 3D strain fields can be measured with reasonable accuracy. Even local crack driving forces, such as local variations in the stress intensity factor, crack tip opening displacement and J integral along a crack front line, can be measured from discrete crack tip displacement fields.
| Original language | English |
|---|---|
| Title of host publication | Advances in Experimental Mechanics VIII |
| Pages | 249-254 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - Oct 26 2011 |
| Externally published | Yes |
| Event | 8th International Conference on Advances in Experimental Mechanics: Integrating Simulation and Experimentation for Validation - Edinburgh, United Kingdom Duration: Sep 7 2011 → Sep 9 2011 |
Publication series
| Name | Applied Mechanics and Materials |
|---|---|
| Volume | 70 |
| ISSN (Print) | 1660-9336 |
| ISSN (Electronic) | 1662-7482 |
Other
| Other | 8th International Conference on Advances in Experimental Mechanics: Integrating Simulation and Experimentation for Validation |
|---|---|
| Country | United Kingdom |
| City | Edinburgh |
| Period | 9/7/11 → 9/9/11 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
3D/4D strain mapping using in-situ X-ray microtomography. / Toda, Hiroyuki; Uesugi, Kentaro; Suzuki, Yoshio; Kobayashi, Masakazu.
Advances in Experimental Mechanics VIII. 2011. p. 249-254 (Applied Mechanics and Materials; Vol. 70).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - 3D/4D strain mapping using in-situ X-ray microtomography
AU - Toda, Hiroyuki
AU - Uesugi, Kentaro
AU - Suzuki, Yoshio
AU - Kobayashi, Masakazu
PY - 2011/10/26
Y1 - 2011/10/26
N2 - X-ray microtomography (XMT) has been utilized for the in-situ observation of various structural materials under external disturbance such as loading. In-situ XMT provides a unique possibility to access the three-dimensional (3D) character of internal microstructure and its time evolution behaviours non-destructively, thereby enabling advanced techniques for measuring local strain distribution. Local strain mapping is readily enabled by processing such high-resolution tomographic images either by the particle tracking technique or the digital image correlation technique. Procedures for tracking microstructural features which have been developed by the authors, have been applied to analyse localised deformation and damage evolution in a material. Typically several tens of thousands of microstructural features, such as particles and pores, are tracked in a tomographic specimen (0.2 - 0.3 mm 3 in volume). When a sufficient number of microstructural features is dispersed in 3D space, the Delaunay tessellation algorithm is used to obtain local strain distribution. With these techniques, 3D strain fields can be measured with reasonable accuracy. Even local crack driving forces, such as local variations in the stress intensity factor, crack tip opening displacement and J integral along a crack front line, can be measured from discrete crack tip displacement fields.
AB - X-ray microtomography (XMT) has been utilized for the in-situ observation of various structural materials under external disturbance such as loading. In-situ XMT provides a unique possibility to access the three-dimensional (3D) character of internal microstructure and its time evolution behaviours non-destructively, thereby enabling advanced techniques for measuring local strain distribution. Local strain mapping is readily enabled by processing such high-resolution tomographic images either by the particle tracking technique or the digital image correlation technique. Procedures for tracking microstructural features which have been developed by the authors, have been applied to analyse localised deformation and damage evolution in a material. Typically several tens of thousands of microstructural features, such as particles and pores, are tracked in a tomographic specimen (0.2 - 0.3 mm 3 in volume). When a sufficient number of microstructural features is dispersed in 3D space, the Delaunay tessellation algorithm is used to obtain local strain distribution. With these techniques, 3D strain fields can be measured with reasonable accuracy. Even local crack driving forces, such as local variations in the stress intensity factor, crack tip opening displacement and J integral along a crack front line, can be measured from discrete crack tip displacement fields.
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UR - http://www.scopus.com/inward/citedby.url?scp=80054819937&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.70.249
DO - 10.4028/www.scientific.net/AMM.70.249
M3 - Conference contribution
AN - SCOPUS:80054819937
SN - 9783037852026
T3 - Applied Mechanics and Materials
SP - 249
EP - 254
BT - Advances in Experimental Mechanics VIII
ER -