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http://dx.doi.org/10.7474/TUS.2011.21.2.109

Estimation of Dynamic Brazilian Tensile Strengths of Rocks Using Split Hopkinson Pressure Bar (SHPB) System  

Yang, Jung-Hun (전북대학교 자원.에너지 공학과)
Ahn, Jung-Lyang (전북대학교 자원.에너지 공학과)
Kim, Seung-Kon (전북대학교 자원.에너지 공학과)
Song, Young-Su (전북대학교 자원.에너지 공학과)
Sung, Nak-Hoon (한국지질자원연구원 광물자원연구본부)
Lee, Youn-Kyou (군산대학교 해양건설공학과)
Cho, Sang-Ho (전북대학교 자원.에너지 공학과)
Publication Information
Tunnel and Underground Space / v.21, no.2, 2011 , pp. 109-116 More about this Journal
Abstract
In this study, we estimated the dynamic tensile strength and strain rate from Brazilian tensile test using Split Hopkinson Pressure Bar (SHPB) system. A pulse shaping technique, which controls the shape of the impactinduce incident waves, was used for achieving the dynamic stress equilibrium and constant strain rate before fracture of rock samples. Three kinds of rock type, Inada granite, Kimachi sandstone and Tage tuff were prepared as 50mm in diameter and 26 mm in thickness. The high-speed videography system was used to observe the fracture processes of the rock samples. As the results of the tests, the ratio of dynamic tensile strength and static tensile strength was 11.9 for Inada granite, 8.5 for Kimachi sandstone and 9.2 for Tage tuff.
Keywords
Split Hopkinson Pressure Bar (SHPB); Dynamic tensile strengths; Strain rate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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