Abstract
The local elastic and plastic strain during deformation are very complicated and different form the macroscopic strain, because most materials have inhomogeneous microstructure. In this study, local strain distribution in three dimensions has been measured using the new developed method based on image analysis in high-resolution synchrotron radiation computed tomography (SR-CT). Model and practical specimens, which made of cupper alloy and aluminum alloy, respectively, were prepared for a development procedure and application of local strain measurements. Gauging intervals of microstructural features before and after deformation gave us information of inhomogeneous local strain distribution in three dimensions. High strain was observed in a necking region appeared after tensile deformation in the model sample. A combination of non-destructive measurements by SR-CT and three-dimensional analysis revealed inhomogeneous strain distributions in practical aluminum samples.
| Original language | English |
|---|---|
| Pages (from-to) | 1153-1156 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 345-346 II |
| DOIs | |
| Publication status | Published - 2007 |
| Externally published | Yes |
Keywords
- Computer tomography
- Interior strain
- Local strain
- Synchrotron radiation
- Three-dimensional image analysis
- Three-dimensional observation
- Tracking algorithm
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering