TY - GEN
T1 - Fracture processes of rocks in dynamic tensile-splitting test
AU - Cho, S. H.
AU - Mohanty, B.
AU - Nakamura, Y.
AU - Ogata, Y.
AU - Kitayama, H.
AU - Kaneko, K.
PY - 2007
Y1 - 2007
N2 - In this study, the dynamic loading apparatus, which uses the electric detonator, was applied to load the rock specimens diametrically. The dynamic tensile-splitting behavior of the sandstone samples was observed by high-speed video camera and the applied load histories were monitored by an impact load cell. High-resolution X-ray computed tomography (CT) system, which use micro-focus X-ray beam, has been used to observe microstructure of rock samples. This study used the cone-beam scan of micro-focus X-ray CT to observe the 3D fracture pattern of the samples. The dynamic fracture processes of rock in dynamic tensile-splitting test were analyzed by the numerical simulation method to investigate the influence of the loading condition on the tensile-splitting fracture. Additionally, this study validated the applicability of the dynamic loading apparatus to estimate dynamic tensile strength of rocks such as sandstone and tuff.
AB - In this study, the dynamic loading apparatus, which uses the electric detonator, was applied to load the rock specimens diametrically. The dynamic tensile-splitting behavior of the sandstone samples was observed by high-speed video camera and the applied load histories were monitored by an impact load cell. High-resolution X-ray computed tomography (CT) system, which use micro-focus X-ray beam, has been used to observe microstructure of rock samples. This study used the cone-beam scan of micro-focus X-ray CT to observe the 3D fracture pattern of the samples. The dynamic fracture processes of rock in dynamic tensile-splitting test were analyzed by the numerical simulation method to investigate the influence of the loading condition on the tensile-splitting fracture. Additionally, this study validated the applicability of the dynamic loading apparatus to estimate dynamic tensile strength of rocks such as sandstone and tuff.
UR - https://www.scopus.com/pages/publications/56149125055
U2 - 10.1201/noe0415444019-c78
DO - 10.1201/noe0415444019-c78
M3 - Conference paper
AN - SCOPUS:56149125055
SN - 0415444012
SN - 9780415444019
T3 - Proceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
SP - 639
EP - 645
BT - Proceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
PB - Taylor and Francis/ Balkema
T2 - 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
Y2 - 27 May 2007 through 31 May 2007
ER -