Abstract
Serious doubts about the constant-K characteristics of double-torsion specimens have been expressed in recent years. However, compliance calibration shows that the energy release rate and hence the stress intensity factor are independent of the crack length in this technique. Relatively large scattering in the results obtained by the load-relaxation method makes the data unreliable. The load-relaxation experiments should be carried out in combination with other methods. A theoretical calculation of the load-deformation curve under a constant displacement rate gives a rough estimation of the stress corrosion index. The subcritical crack growth data can be given, in principle, by only one experimental run of the constant displacement rate method of double-torsion testing.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. Adams andP. W. McMillan,J. Mater. Sci. 12 (1977) 643.
R. W. Davidge, “Mechanical Behaviour of Ceramics” (Cambridge University Press, Cambridge, 1979) Ch. 9.
O. L. Anderson andP. C. Grew,Rev. Geophys. Space. Phys. 73 (1977) 1433.
B. R. Lawn andT. R. Wilshaw, “Fracture of Brittle Solids” (Cambridge University Press, Cambridge, 1975) Chs 3, 8.
J. O. Outwater andD. J. Gerry,US Naval Research Laboratory Report NONR 3219 (1966).
J. A. Kies andA. B. J. Clark, in “Fracture”, edited by P. L. Pratt (Chapman and Hall, New York, 1969) p. 483.
A. G. Evans,J. Mater. Sci. 7 (1972) 1137.
B. J. Pletka, E. R. Fuller Jr andB. G. Koepke,STP678 (American Society for Testing and Materials, Philadelphia, 1979) p. 19.
B. K. Atkinson,Pure Appl. Geophys. 117 (1979) 1011.
B. K. Atkinson andP. G. Meredith,Tectonophysics 77 (1981) T1.
P. L. Swanson,J. Geophys. Res. 89 (1984) 4137.
B. J. Pletka andS. M. Wiederhorn, in “Fracture Mechanics of Ceramics”, Vol. 4, edited by R. C. Bradt, D. P. H. Hasselman and F. F. Lange (Plenum, New York, 1978) p. 745.
M. K. Ferber andS. D. Brown,J. Amer. Ceram. Soc. 63 (1980) 424.
A. G. Evans andS. M. Wiederhorn,J. Mater. Sci. 9 (1974) 270.
T. Waza, K. Kurita andH. Mizutani,Tectonophysics 67 (1980) 25.
O. Sano,Int. J. Rock. Mech. Min. Sci. Geomech. Abstr. 18 (1981) 259.
T. A. Michalske, M. Singh andV. D. Frechette,STP 745 (American Society for Testing and Materials, Philadelphia, 1981) p. 3.
L. S. Costin andJ. J. Mecholsky, in Proceedings of 24th US Symposium on Rock Mechanics, Texas A & M University, College Station, June 1983, edited by E. R. Hoskins (Association of Engineering Geologists) p. 385.
O. Sano, I. Ito andM. Terada,J. Geophys. Res. 86 (1981) 9299.
T. N. Dale,Bull. US Geol. Surv. 738 (1923) 1.
S. S. Peng andA. M. Johnson,Int. J. Rock. Mech. Min. Sci. 6 (1972) 37.
B. K. Atkinson andR. D. Rawlings, in “Earthquake Prediction”, edited by D. W. Simpson and P. G. Richards (American Geophysical Union, Washington, DC, 1981) p. 605.
P. L. Swanson, MS Thesis, University of Colorado (1980).
D. P. Williams andA. G. Evans,J. Test. Eval. 1 (1972) 264.
A. D. Jayatilaka, “Fracture of Engineering Brittle Materials” (Applied Science, London, 1979) Ch. 6.
G. G. Trantina,J. Amer. Ceram. Soc. 60 (1977) 338.
P. L. Swanson, “Subcritical Fracture Propagation in Rocks”, PhD thesis, University of Colorado (1985).
O. Sano, M. Terada andS. Ehara,Tectonophysics 84 (1982) 343.
S. M. Wiederhorn,J. Amer. Ceram. Soc. 50 (1967) 407.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sano, O. A revision of the double-torsion technique for brittle materials. J Mater Sci 23, 2505–2511 (1988). https://doi.org/10.1007/BF01111909
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01111909