2016年
Field Theoretical Description of Shear Bands
FRACTURE, FATIGUE, FAILURE AND DAMAGE EVOLUTION, VOL 8
- ,
- 開催年月日
- 2016年 - 2016年
- 記述言語
- 英語
- 会議種別
- 主催者
- SPRINGER
Spatiotemporal behaviors of the shear band have been analyzed. Based on a recent field theory of deformation and fracture, it has been hypothesized that (a) a shear band is formed along the boundary of opposite rotational displacements of a specimen. (b) When the propagation velocity of movable dislocations along the front of a shear band is higher than the phase velocity of the rotation wave the shear band appears continuously whereas when the velocity of the dislocations is lower than the rotation wave the shear band travels at the same velocity as the rotational wave appearing intermittently. Electronic-Speckle-Pattern Interferometric setup has been used to monitor the formation and movement of shear bands under various tensile strain rates. The observed spatiotemporal characteristics of the shear bands have been found to support the above hypotheses.