Skip to main content Accessibility help
×
Home

Pressurized internal lenticular cracks at healed mica interfaces

  • K-T. Wan (a1), R.G. Horn (a1), S. Courmont (a1) and B.R. Lawn (a1)

Abstract

The equilibrium states of internal penny cracks at interfaces in thin-sheet bodies are investigated. Consideration is given to cracks held open by a center-loading force from an entrapped particle in combination with a uniform pressure from a fixed mass of entrapped gas. A fracture mechanics analysis indicates that under these conditions the cracks are stable, but are amenable to growth from an enhancement in net pressure (increase in internal pressure or decrease in external pressure) or effective particle size. Essential details of the theory are confirmed by experiments on lenticular cracks at healed interfaces in muscovite mica. The results are pertinent to flaw responses in brittle ceramic systems where structural integrity is an issue.

Copyright

References

Hide All
1Griffith, A. A.Philos. Trans. R. Soc. London A221, 163198 (1920).
2Lawn, B. R.Fracture of Brittle Solids (Cambridge University Press, Cambridge, 2nd ed., in press).
3Evans, A. G. and Hutchinson, J. W.Int. J. Solids Struct. 20 (5), 455466 (1984).
4Swain, M.V.Wear 35, 185-189 (1975).
5Cartz, L. and Tooper, B.J. Appl. Phys. 36 (9), 27832787 (1965).
6Lawn, B. R. and Fuller, E. R.J. Mater. Sci. 19, 40614067 (1984).
7Wang, Z. Y.Harmer, M.P. and Chou, Y.T.Mater. Lett. 7 (5-6), 224228 (1988).
8Wan, K.T., Lawn, B.R. and Horn, R. G.J. Mater. Res. 7, 15841588 (1992).
9Horn, R. G.Wan, K.T., Courmont, S. and Lawn, B. R.J. Colloid and Interf. Sci. (in press).
10Young, W. C.Roark's Formulas for Stress and Strain (McGraw-Hill, New York, 1989).
11Bailey, A.I. and Kay, S.M.Proc. R. Soc. London A301 (1464), 4756 (1967).
12Wan, K.T. and Lawn, B.R.Acta Metall. 38 (11), 20732083 (1990).
13Wan, K.T., Aimard, N.Lathabai, S.Horn, R.G. and Lawn, B.R.J. Mater. Res. 5, 172182 (1990).
14Wan, K.T., Smith, D. T. and Lawn, B. R.J. Am. Ceram. Soc. 75 (3), 667676 (1992).
15Mai, Y.W. and Lawn, B.R.Ann. Rev. Mater. Sci. 16, 415439 (1986).
16Hutchinson, J.W. and Suo, Z.Adv. Appl. Mech. 29, 64 (1991).
17Anderson, G. P.Bennett, S. J. and DeVries, K. L.Analysis and Testing ofAdhesive Bonds (Academic Press, New York, 1977).
18Sneddon, I.N. and Lowengrubb, M.Crack Problems in the Classical Theory of Elasticity (John Wiley, New York, 1969).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed