Asymptotic Analysis of Boundary-Induced Size Dependence of Fracture Properties

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The recently-developed boundary effect concept and associated asymptotic model are used to explain the size effect phenomena in fracture of quasi-brittle materials. It is demonstrated that the size dependence of the fracture toughness and strength of quasi-brittle materials is indeed due to the influences of specimen boundaries on the failure mode and therefore, on the strength of the specimen. To verify the boundary effect concept, fracture tests on a high strength concrete reported by Karihaloo et al are analysed and predicted using the asymptotic model. The results show that the predictions of the asymptotic boundary effect model agree very well with those experimental results.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

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

Pages:

1209-1212

DOI:

10.4028/www.scientific.net/KEM.324-325.1209

Citation:

K. Duan and X. Z. Hu, "Asymptotic Analysis of Boundary-Induced Size Dependence of Fracture Properties ", Key Engineering Materials, Vols. 324-325, pp. 1209-1212, 2006

Online since:

November 2006

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$35.00

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