Analysis of Interface Crack in Polymer Liner Subjected to Hygrothermal Stress

Abstract:

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Polymeric materials such as epoxy are widely used as coating layers for the containment building of the nuclear power plant. These layers may be damaged through a hygrothermal process and residual stresses can reach significant levels near the free edges, possibly leading to interface debonding or delamination. Interfacial stress singularities induced in a laminate model consisting of the epoxy coating layer and the concrete substrate is investigated using the time-domain boundary element method. The epoxy layer is assumed to be a linear viscoelastic material and moisture effects are assumed to be analogous to thermal effects. The overall stress intensity factor for the case of a small interfacial edge crack of length a has been computed.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

1249-1252

DOI:

10.4028/www.scientific.net/KEM.324-325.1249

Citation:

S. S. Lee, "Analysis of Interface Crack in Polymer Liner Subjected to Hygrothermal Stress ", Key Engineering Materials, Vols. 324-325, pp. 1249-1252, 2006

Online since:

November 2006

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$35.00

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