@inproceedings{606cbd853a58403ea4a7478840b2663e,
title = "Loading rate dependency of dynamic fracture toughness of rocks",
abstract = "In this study, straight notched disk bending (SNDB) specimens of Yeongju granite were used to determine the fracture toughness with wide range of loading velocity from 0.01 to 680, 000 mm/mm. The SNDB specimens were dynamically loaded with the split Hopkinson pressure bar (SHPB) system. Static fracture toughness values of the granites were also determined to compare with the dynamic fracture toughness. The measured fracture toughnesses K1c under the static and dynamic loading condition were plotted against the loading rate v on a logarithmic graph. The crack opening behavior around the tip of the notch during dynamic loading was observed by using a high speed digital camera. The fracture planes around the notch tip inside the tested samples were observed by a high-resolution microfocus X-ray CT scanner.",
author = "Cho, {Sang Ho} and Kim, {Min Seong} and Kang, {Hyeong Min} and Minami Kataoka and Yuzo Obara and Kim, {Kwang Min}",
note = "Publisher Copyright: Copyright 2015 ARMA, American Rock Mechanics Association.; 49th US Rock Mechanics / Geomechanics Symposium ; Conference date: 29-06-2015 Through 01-07-2015",
year = "2015",
language = "English (US)",
series = "49th US Rock Mechanics / Geomechanics Symposium 2015",
publisher = "American Rock Mechanics Association (ARMA)",
pages = "2856--2860",
booktitle = "49th US Rock Mechanics / Geomechanics Symposium 2015",
}