| Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Page(s) | 577 - 582 | |
| DOI | https://doi.org/10.1051/jp4:2006134089 | |
| Publié en ligne | 26 juillet 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 577-582
DOI: 10.1051/jp4:2006134089
Real-time measurement on deformation fields of hole-excavated samples under impact tension
Siying Chen1, Chenguang Huang2 and Guoqiang Ni11 Department of Optoelectronic Engineering, Beijing Institute of Technology, Beijing 100081, China
2 Department of Engineering Sciences, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China
Published online: 26 July 2006
Abstract
In this paper, the real-time deformation fields are
observed in two different kinds of hole-excavated dog-bone samples loaded by
an SHTB, including single hole sample and dual holes sample with the
aperture size of 0.8 mm. The testing system consists of a high-speed camera,
a He-Ne laser, a frame grabber and a synchronization device with the
controlling accuracy of 1 microsecond. Both the single hole expanding
process and the interaction of the two holes are recorded with the time
interval of 10 
s. The observed images on the sample surface are
analyzed by newly developed software based on digital correlation theory and
a modified image processing method. The 2-D displacement fields in plane are
obtained with a resolution of 50 m and an accuracy of 0.5 m.
Experimental results obtained in this paper are proofed, by compared with
FEM numerical simulations.
© EDP Sciences 2006