TY - GEN
T1 - Real-time measurement on deformation fields of hole-excavated samples under impact tension
AU - Chen, Siying
AU - Huang, Chenguang
AU - Ni, Guoqiang
PY - 2006/8
Y1 - 2006/8
N2 - 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 μs. 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 μm and an accuracy of 0.5 μm. Experimental results obtained in this paper are proofed, by compared with FEM numerical simulations.
AB - 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 μs. 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 μm and an accuracy of 0.5 μm. Experimental results obtained in this paper are proofed, by compared with FEM numerical simulations.
KW - Damage mechanics
KW - Digital correlation theory
KW - FEM
KW - SHPB
UR - http://www.scopus.com/inward/record.url?scp=33750587259&partnerID=8YFLogxK
U2 - 10.1051/jp4:2006134089
DO - 10.1051/jp4:2006134089
M3 - Conference contribution
AN - SCOPUS:33750587259
SN - 2868839444
SN - 9782868839442
T3 - Journal De Physique. IV : JP
SP - 577
EP - 582
BT - Proceedings - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading, EURODYMAT 2006
T2 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading
Y2 - 11 September 2006 through 15 September 2006
ER -