A study on the estimation of fracture toughness of granite by acoustic emission

미소 파괴음 빈도 측정에 의한 화강암의 파괴인성 평가에 관한 연구

  • 신재근 ((주)바우 컨설턴트 지반/터널부) ;
  • 이상은 (만영 엔지니어링) ;
  • 임한욱 (강원대학교 지구시스템공학과)
  • Published : 2000.06.01


The fracture toughness can be measured by the two testing methods using chevron-notched specimen according to the ISRM Working Group of Commission of Testing Methods. They are chevron bend (CB) test and short rod (SR) test. In this study, the suggested methods (Level I tests) were conducted on the CB and SR specimens of Chuncheon granite. In addition. the J-integral analysis was combined with an acoustic emission technique to determine the fracture toughness. The results from two telling methods were analyzed in terms of the anisotropy and the acoustic emission characteristics.


  1. Int, J.Mech.in.Sci. v.5 Mechanism of brittle fracture of rock,Theory of the fracture process Bieniawski, Z.T.
  2. Ph.D these Discrete fracture propagation in rocks: Laboratory tests and finie element analysis Ingraffea, A.R.
  3. Proc.21st U.S.Symp.on Rock Mech. The influence of orientation on moduli in Berkeley granite Halleck, P.;Kumnick, A.J.
  4. Rock Mech. v.5 Influence of microstructure on fracture propagation in rock Hoagland, R.G.;Hahn, G.T.;Rosenfield, A.R.
  5. Int.J.Rock Mech.Min.Sic.& Geomech.Abstr. v.25 Suggested Methods for Determining the Fracture Toughness of Rock
  6. Fracture Mechanics Applied to Brittle Materials $K_IC and J_IC$ of Westerly granite effects of thickness and inplane dimensions Schmidt, R.A.;Lutz, T.J.
  7. 강원대학교 산업기술연구소 논문집 암석내 균열성장 개시점의 결정을 위한 실험적 연구 김재동
  8. Int.J.Rock Mech.Min.Sci.& Geomech. Abstr. v.30 Fracture Toughness Testing of Core-based Specimens by Acoustic Emission Hashida, T.
  9. Int.J.Rock Mech.Min.Sci.& Geomech.Abstr. v.30 Significance of AE Crack Monitoring in Fracture Toughness evaluation and Non-linear Rock Fracture Mechanics Hashida, T.;Takahashi, H
  10. J.Appl.Mech. v.35 A Path Independent Integral and the Approximate Analysis of Strain Concentrations by Notches and Cracks Rice, J.R.
  11. Fracture Mechanics, Fundamentals and Applications Anderson, T.L.
  12. Elementary of fracture mechanics properties (4th ed.) David, B.
  13. Ph.D.Dissertation. Dept.of Civil engineering, The University of Texas at Austin Evaluation of fracture mechanics properties and microstructural observations of rock fractures Baek.H.
  14. 비파괴검사학회지 v.15 no.1 음향방출법에 의한 탄소섬유 복합 재료의 인장 및 파괴 인성시험시의 파괴 거동에 관한 연구 이상국;오세규;남기우
  15. 충남대 석사학위 논문 AE를 이용한 복합적층판의 파괴인성 평가에 관한 연구 박창수
  16. 강원대학교 공학박사학위논문 Acoustic Emission에 의한 岩石의 破壞源,位置 決定과微小 破壞 메커니즘에 關한 硏究 이상은
  17. Proc.30th US Rock Mech. Symp. Balkema, Rotterdam An dvaluation of the amplitude distribusion of AE activity in rock specimens stressed to failure Hardy, Jr.;Rao, M.V.M.S.