Pressurized internal lenticular cracks at healed mica interfaces

Wan, K.-T., Horn, R. G., Courmont, S. and Lawn, B. R. 1993, Pressurized internal lenticular cracks at healed mica interfaces, Journal of materials research, vol. 8, no. 5, pp. 1128-1136, doi: 10.1557/JMR.1993.1128.

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Title Pressurized internal lenticular cracks at healed mica interfaces
Author(s) Wan, K.-T.
Horn, R. G.
Courmont, S.
Lawn, B. R.
Journal name Journal of materials research
Volume number 8
Issue number 5
Start page 1128
End page 1136
Total pages 9
Publisher Materials Research Society
Place of publication Pittsburgh, Pa.
Publication date 1993-05
ISSN 0884-2914
Keyword(s) mica interfaces
lenticular cracks
Summary 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.
Language eng
DOI 10.1557/JMR.1993.1128
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1993, Materials Research Society
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