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Rock Mechanics and Rock Engineering

, Volume 47, Issue 1, pp 267–274 | Cite as

ISRM-Suggested Method for Determining the Mode I Static Fracture Toughness Using Semi-Circular Bend Specimen

  • M. D. Kuruppu
  • Y. Obara
  • M. R. Ayatollahi
  • K. P. Chong
  • T. Funatsu
ISRM Suggested Method

Abstract

The International Society for Rock Mechanics has so far developed two standard methods for the determination of static fracture toughness of rock. They used three different core-based specimens and tests were to be performed on a typical laboratory compression or tension load frame. Another method to determine the mode I fracture toughness of rock using semi-circular bend specimen is herein presented. The specimen is semi-circular in shape and made from typical cores taken from the rock with any relative material directions noted. The specimens are tested in three-point bending using a laboratory compression test instrument. The failure load along with its dimensions is used to determine the fracture toughness. Most sedimentary rocks which are layered in structure may exhibit fracture properties that depend on the orientation and therefore measurements in more than one material direction may be necessary. The fracture toughness measurements are expected to yield a size-independent material property if certain minimum specimen size requirements are satisfied.

Keywords

Rock fracture mechanics Mode I fracture toughness Semi-circular bend specimen Fracture testing Sedimentary rock In situ environment 

Notes

Acknowledgments

The authors thankfully acknowledge the guidance and encouragement given by Prof. Resat Ulusay, President of the ISRM commission on testing methods, and other commission members in order to develop this suggested method.

References

  1. Abaqus Unified FEA (2012) Dassault systemsGoogle Scholar
  2. Aliha MRM, Sistaninia M, Smith DJ, Pavier MJ, Ayatollahi MR (2012) Geometry effects and statistical analysis of mode I fracture in Guiting limestone. Int J Rock Mech Min Sci 51:128–135CrossRefGoogle Scholar
  3. Ayatollahi MR, Aliha MRM (2007) Wide range data for crack tip parameters in two disc-type specimens under mixed mode loading. Comput Mater Sci 38:660–670CrossRefGoogle Scholar
  4. Backers T, Stephansson O (2012) ISRM suggested method for the determination of mode II fracture toughness. Rock Mech Rock Engng 45:1011–1022CrossRefGoogle Scholar
  5. Basham KD (1989) Nonlinear fracture mechanics using semi-circular specimens and tension softening behaviour. PhD dissertation, Department of Civil Engineering, The University of Wyoming, USAGoogle Scholar
  6. Bazant ZP (1984) Size effect in blunt fracture: concrete, rock, metal. J Engng Mech Div ASCE 110:518–535CrossRefGoogle Scholar
  7. Chong KP, Kuruppu MD (1984) New specimen for fracture toughness determination of rock and other materials. Int J Fract 26:R59–R62CrossRefGoogle Scholar
  8. Chong KP, Kuruppu MD, Kuszmaul JS (1987) Fracture toughness determination of layered materials. Eng Fract Mech 28:43–54CrossRefGoogle Scholar
  9. Funatsu T, Seto M, Shimada H, Matsui K, Kuruppu M (2004) Combined effects of increasing temperature and pressure on the fracture toughness of clay bearing rocks. Int J Rock Mech Min Sci 41:927–938CrossRefGoogle Scholar
  10. ISRM (2007) The complete ISRM suggested methods for rock characterization, testing and monitoring: 1974–2006. In: Ulusay R, Hudson JA (eds) Suggested methods prepared by the commission on testing methods, International Society for Rock Mechanics, compilation arranged by the ISRM Turkish National Group. Kozan Ofset, AnkaraGoogle Scholar
  11. Karfakis MG, Akram M (1993) Effects of chemical solutions on rock fracturing. Int J Rock Mech Min Sci Geomech Abstr 30(7):1253–1259CrossRefGoogle Scholar
  12. Kataoka M, Obara Y, Yoshinaga T, Kuruppu M (2010) Fracture toughness of rock under water vapour pressure. In: Proceedings of the ISRM International Symposium on Rock Mechanics and 6th Asian Rock Mechanics Symposium, New Delhi, Paper No. 12 (on CD)Google Scholar
  13. Kataoka M, Obara Y, Kuruppu M (2011) Estimation of fracture toughness of anisotropic rocks by SCB test and visualization of fracture by means of X-ray CT. In: Qian Q, Zhou Y (eds) Proceedings of the ISRM 12th International Congress on Rock Mechanics, Beijing, pp 667–670Google Scholar
  14. Khan K, Al-Shayea NA (2000) Effect of specimen geometry and testing method on mixed mode I–II fracture toughness of a limestone rock from Saudi Arabia. Rock Mech Rock Engng 33(3):179–206CrossRefGoogle Scholar
  15. Kuruppu MD, Chong KP (2012) Fracture toughness testing of brittle materials using semi-circular bend (SCB) specimen. Eng Fract Mech 91:133–150CrossRefGoogle Scholar
  16. Kuruppu MD, Seto M (2001) Determination of fracture toughness of rock under in situ conditions using semi-circular specimen. In: Proceedings of ICF10, 10th International Conference on Fracture, Hawaii, pp 651 (abstracts vol)Google Scholar
  17. Lim IL, Johnston IW, Choi SK (1993) Stress intensity factors for semi-circular specimens under three-point bending. Eng Fract Mech 44(3):363–382CrossRefGoogle Scholar
  18. Lim IL, Johnston IW, Choi SK, Boland JN (1994) Fracture testing of a soft rock with semi-circular specimens under three-point loading, part 1-mode I. Int J Rock Mech Min Sci 31:185–197CrossRefGoogle Scholar
  19. Liu HW (1983) On the fundamental basis of fracture mechanics. Eng Fract Mech 17:425–438CrossRefGoogle Scholar
  20. Molenar AAA, Scarpas A, Liu X, Erkens SMJG (2002) Semi-circular bending test; simple but useful? J Assoc Asph Paving Technol 71:794–815Google Scholar
  21. Obara Y, Sasaki K, Matusyama T, Yoshinaga T (2006) Influence of water vapour pressure of surrounding environment on fracture toughness of rock. In: Proceedings of ARMS 2006, Asian Rock Mechanics Symposium, Singapore, 7th chapter (on CD)Google Scholar
  22. Obara Y, Sasaki K, Yoshinaga T (2007a) Estimation of fracture toughness of rocks under water vapour pressure by semi-circular bend (SCB) test. J of MMIJ 123:145–151CrossRefGoogle Scholar
  23. Obara Y, Sasaki K, Yoshinaga T (2007b) Influence of water vapour pressure of surrounding environment on fracture toughness and crack velocity of rocks. In: Proceedings of 11th congress of ISRM, Vol 1. Lisbon, pp 51-54Google Scholar
  24. Obara Y, Yoshinaga T, Hirata A (2009) Fracture toughness in mode I and II of rock under water vapour pressure. In: Vrkljan I (ed) Proceedings of ISRM regional symposium EUROCK, Cavtat, pp 333–338Google Scholar
  25. Obara Y, Kuruppu M, Kataoka M (2010) Determination of fracture toughness of anisotropic rocks under water vapour pressure by semi-circular bend test. In: Topal E, Kuruppu MD (eds) Proceedings of mine planning and equipment selection, The Australasian Institute of Mining and Metallurgy, Victoria, Australia, pp 599–610Google Scholar
  26. Ouchterlony F (1989) Fracture toughness testing of rock with core based specimens, the development of an ISRM standard. In: Mihashi H, Takahashi H (eds) Fracture toughness and fracture energy. A. A. Balkema, Rotterdam, The Netherlands, pp 231–251Google Scholar
  27. Ouchterlony F (1990) Fracture toughness testing of rock with core based specimens. Eng Fract Mech 35:351–366CrossRefGoogle Scholar
  28. Tutluoglu L, Keles C (2011) Mode I fracture toughness determination with straight notched disk bending method. Int J Rock Mech Min Sci 48:1248–1261CrossRefGoogle Scholar
  29. Whittaker BN, Singh RN, Sun G (1992) Rock fracture mechanics—principles, design and applications. Elsevier Sci Publisher, AmsterdamGoogle Scholar
  30. Zhou YX, Xia K, Li XB, Li HB, Ma GW, Zhao J, Zhou ZL, Dai F (2012) Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials. Int J Rock Mech Min Sci 49:105–112CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • M. D. Kuruppu
    • 1
  • Y. Obara
    • 2
  • M. R. Ayatollahi
    • 3
  • K. P. Chong
    • 4
    • 5
  • T. Funatsu
    • 6
  1. 1.Curtin UniversityKalgoorlieAustralia
  2. 2.Graduate School of Science and TechnologyKumamoto UniversityKumamotoJapan
  3. 3.School of Mechanical EngineeringIran University of Science and TechnologyTehranIran
  4. 4.National Institute of Standards and TechnologyGaithersburgUSA
  5. 5.Department of Mechanical EngineeringGeorge Washington UniversityWashington DCUSA
  6. 6.Institute for Geo-Resources and Environment, AISTTsukubaJapan

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