Formula for calculating the critical stress intensity factor in rock fracture toughness tests using cracked chevron notched Brazilian disc (CCNBD) specimens

International Journal of Rock Mechanics and Mining Sciences

Volumn 47, Issue 6, 2010, Pages 1006-1011

  Wang, Q Z ^a  

^a SICHUAN UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

FRACTURE TOUGHNESS; ROCK MECHANICS; STRESS;

EID: 77955266220     PISSN: 13651609     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijrmms.2010.05.005     Document Type: Article

References (19)

1. ISRM Testing Commission (co-ordinator: RJ Fowell) Suggested method for determining mode I fracture toughness using cracked chevron notched Brazilian disc (CCNBD) specimens. Int J Rock Mech Min Sci Geomech Abstr 1995, 32:57-64.
2. Iqbal MJ, Mohanty B Experimental calibration of stress intensity factor of the ISRM suggested cracked chevron-notched Brazilian disc specimen used for determination of mode-I fracture toughness. Int J Rock Mech Min Sci 2006, 43:1270-1276.
3. Fowell RJ, Chen JF. The third chevron-notched rock fracture specimen-the cracked chevron notched Brazilian disc. In: Proceedings of the 31st US Rock Mechanics Symposium, 1990, Balkema, p. 295-302.
4. Chen JF. The development of the cracked-chevron-notched Brazilian disc method for rock fracture toughness measurement. In: Proceedings of the 1990 Spring Conference on Experimental Mechanics, Albuquerque, 1990, p. 18-21.
5. Fowell RJ, Xu C The cracked chevron notched Brazilian disc test-geometrical considerations for practical rock fracture toughness measurements. Int J Rock Mech Min Sci Geomech Abstr 1993, 30:821-824.
6. Xu C, Fowell RJ Stress Intensity factor evaluation for cracked chevron notched Brazilian disc specimen. Int J Rock Mech Min Sci Geomech Abstr 1994, 31:157-162.
7. Wang QZ Stress intensity factors of ISRM suggested CCNBD specimen used for mode-I fracture toughness determination. Int J Rock Mech Min Sci 1998, 35:977-982.
8. Wang QZ, Jia XM, Kou SQ, Zhang ZX, Lindqvist P-A More accurate stress intensity factor derived by finite element analysis for the ISRM suggested rock fracture toughness specimen-CCNBD. Int J Rock Mech Min Sci 2003, 40:233-241.
9. Wang QZ, Jia XM, Wu LZ Wide-range stress intensity factors for ISRM suggested method using CCNBD specimens for rock fracture toughness tests. Int J Rock Mech Min Sci 2004, 41:709-716.
10. Iqbal MJ, Mohanty B Experimental calibration of ISRM suggested rock fracture toughness measurement techniques in selected brittle rocks. Rock Mech Rock Eng 2007, 40(5):453-475.
11. Moon T, Nakagawa M, Berger J Measurement of fracture toughness using the distinct element method. Int J Rock Mech Min Sci 2007, 44:449-456.
12. Cherepanov GP Mechanics of brittle fracture 1979, McGraw-Hill, New York.
13. Yarema SY, Krestin GS Determination of the modulus of cohesion of brittle materials by compressive tests on disk specimens containing cracks. Sov Mater Sci 1966, 2:7-10.
14. Libatskii LL, Kovchik SE Fracture of discs containing crack. Sov Mater Sci 1967, 3:334-339.
15. Tada H, Paris PS, Irwin GR The stress analysis of cracks handbook 1985, Paris Prod Inc, St Louis. 2nd ed.
16. Wu XR, Carlsson AJ Weight functions and stress intensity factor solutions 1991, Pergamon, Oxford.
17. Wang QZ, Fan H, Gou X, Zhang S. Recalibration and clarification for the formula applied to ISRM suggested CCNBD specimen for testing rock fracture toughness. Submitted.
18. Cauwellaert FV, Eckmann B Indirect tensile test applied to anisotropic materials. Mater Struct 1994, 27(10):54-60.
19. Wang QZ, Jia XM, Kou SQ, Zhang ZX, Lindqvist P-A The flattened Brazilian disc specimen used for testing elastic modulus, tensile strength and fracture toughness of brittle rocks: Analytical and numerical results. Int J Rock Mech Min Sci 2004, 41:245-253.