Browse > Article
http://dx.doi.org/10.12989/sem.2008.29.3.301

Brittle fracture analysis of the offset-crack DCDC specimen  

Ayatollahi, M.R. (Fatigue and Fracture Research Laboratory, Department of Mechanical Engineering, Iran University of Science and Technology)
Bagherifard, S. (Fatigue and Fracture Research Laboratory, Department of Mechanical Engineering, Iran University of Science and Technology)
Publication Information
Structural Engineering and Mechanics / v.29, no.3, 2008 , pp. 301-310 More about this Journal
Abstract
Applications of fracture mechanics in the strength analysis of ceramic materials have been lately studied by many researchers. Various test specimens have been proposed in order to investigate the fracture resistance of cracked bodies under mixed mode conditions. Double Cleavage Drilled Compression (DCDC) specimen, with a hole offset from the centerline is a configuration that is frequently used in subcritical crack growth studies of ceramics and glasses. This specimen exhibits a strong crack path stability that is due to the strongly negative T-stress term. In this paper the maximum tensile stress (MTS) criterion is employed for investigating theoretically the initiation of brittle fracture in the DCDC specimen under mixed mode conditions. It is shown that the T-stress has a significant influence on the predicted fracture load and the crack initiation angle. The theoretical results suggest that brittle fracture in the DCDC specimen is controlled by a combination of the singular stresses (characterized by KI and KII) and the non-singular stress term, T-stress.
Keywords
brittle fracture; mixed mode loading; ceramic materials; fracture analysis;
Citations & Related Records

Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Fett, T. and Munz, D. (2003), " T-stress and crack path stability of DCDC specimens", Int. J. Fract., 124, L165-L170   DOI
2 Fett, T. and Rizzi, G. (2005), "A fracture mechanics analysis of the DCDC specimen", Institut fur Materialforschung, Karlsruhe GmbH
3 Erdogan, F. and Sih, G.C. (1963), "On the crack extension in plates under plane loading and transverse shear", T. ISME J. Basic Eng., 519-525
4 Ayatollahi, M.R. and Bagherifard, S. (2005), "A review of mixed mode test specimens for rock and ceramic materials", The Iranian Mining Eng. Conf., Tehran, Iran, 3, 1451-1464
5 Ayatollahi, M.R. and Aliha, M.R.M. (2005), "Cracked Brazilian disk specimen subjected to mode II deformation", Eng. Fract. Mech., 72, 493-503   DOI   ScienceOn
6 Aliha, M.R.M. (2006), "Mixed mode fracture in brittle and quasi-brittle materials", Research Report, Department of Mechanical Engineering, Iran University of Science and Technology
7 Meguid, S.A. (1989), Fracture Mechanics, Elsevier science Pub.
8 Michalske, T.A., Smith, W.L. and Chen, P. (1993), "Stress intensity calibration for the double cleavage drilled compression specimen", Eng. Fract. Mech., 45(5), 673-642
9 Ritter, J.E., Fox, J.R., Hutko, D.I. and Lardner, T.J. (1998), "Moisture-assisted crack growth at epoxy-glass interfaces", J. Mater. Sci., 33, 4581-4588   DOI   ScienceOn
10 Ritter, J.E., Huseinovic, A., Chacravarthy, S.S. and Lardner, T.J. (2000), "Subcritical crack growth in soda-lime glass under mixed-mode loading" , J. Am. Ceram. Soc., 83(8), 2109-2111   DOI   ScienceOn
11 Smith, W.L. (1987), "An automated test system for studying slow crack growth in glass", Closed Loop Mag., Spring 18
12 Smith, D.J., Ayatollahi, M.R. and Pavier, M.J. (2001), "The role of T-stress in brittle fracture for linear elastic materials under mixed-mode loading", Fatigue Fract. Eng. Mater. Struct., 24, 137-150   DOI   ScienceOn
13 Smith, D.J., Ayatollahi, M.R. and Pavier, M.J. (2006), "On the consequences of T-stress in elastic brittle fracture", Proceedings of the Royal Society A, 462, 2415-2437
14 Turner, M.R., Dalgleish, B.J., He, M.Y. and Evans, A.G. (1995), "A Fracture resistance measurement method for bimaterial interfaces having large debond energy", Acta. Metal. Mater., 43(9), 3459-3465   DOI   ScienceOn
15 Fett, T., Rizzi, G. and Munz, D. (2005), "T-stress solution For DCDC specimens", Eng. Fract. Mech., 72, 145-149   DOI   ScienceOn
16 Hussain, M.A., Pu, S.L. and Underwood, J. (1974), "Strain energy release rate for a crack under combined mode I and mode II Fracture analysis", ASTM Spec. Tech. Pub., 560, 2-28
17 Janssen, C. (1974), "Specimen for fracture mechanics studies on glass", in proc, 10Th Int. Cong. on glass, Kyoto, Japan, Ceramic society of Japan, Tokyo, 10.23-10.30
18 Janssen, C. (1980), "Fracture characteristics of the DCDC specimen", Report no. R8074, Corning Glass Works, Corning, N.Y.
19 Lim, I.L., Johnston, I.W., Choi, S.K. and Boland, J.N. (1994), "Fracture testing of a soft rock with semi-circular specimens under three-point bending Part 2-mixed mode", Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 31(3), 199-212
20 Ayatollahi, M.R. and Aliha, M.R.M. (2006), "On determination of Mode II fracture toughness using semicircular bend specimen", Int. J. Solids Struct., 43, 5217-5227   DOI   ScienceOn
21 Ayatollahi, M.R. and Aliha, M.R.M. (2007), "Fracture toughness study for a brittle rock subjected to mixed mode I/II loading", Int. J. Rock Mech. Min. Sci., 44(4), 617-624   DOI   ScienceOn
22 Fett, T., Gerteisen, G., Hahnenberger, S., Martin, G. and Munz, D. (1995), "Fracture tests for ceramics under mode-I, mode-II and mixed-mode loading", J. Euro. Ceram. Soc., 15, 307-312   DOI   ScienceOn
23 He, M.Y., Turner, M.R. and Evans, A.G. (1995), "Analysis of the double cleavage drilled compression specimen for interface fracture energy measurements over a range of mode mixities", Acta Metall. Mater., l43(9), 3453-3458
24 Lardner, T.J., Chacravarthy, S.S., Quinn, J.D. and Ritter, J.E. (2001), "Further Analysis of the DCDC specimen with an offset hole", Int. J. Fract., 109, 227-237   DOI
25 Sih, G.C. (1973), "Some basic problems in fracture mechanics and new concepts", Eng. Fract. Mech., 5, 365-377   DOI   ScienceOn
26 Suresh, S. Shih, C.F., Morrone, A. and O'Dowd, N.P. (1990), "Mixed-Mode fracture toughness of ceramic materials", J. Am. Ceram. Soc., 73(5), 1257-67   DOI