Bridging stress determination by evaluation of the R-curve

Authors
Fett, T Munz, D Geraghty, RD White, KW
Citation
T. Fett et al., Bridging stress determination by evaluation of the R-curve, J EUR CERAM, 20(12), 2000, pp. 2143-2148
Citations number
28
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
20
Issue
12
Year of publication
2000
Pages
2143 - 2148
Database
ISI
SICI code
0955-2219(200011)20:12<2143:BSDBEO>2.0.ZU;2-O
Abstract
A procedure is proposed which allows for bridging stress determination from a measured R-curve. An application of the method is illustrated for a magn esium aluminate spinel ceramic that exhibits an extended linear R-curve beh avior. The analytical determination of small displacement behavior and the treatment for large displacements using cubic splines is outlined in detail . After an initial increase, bridging stress values are found to decrease f or larger crack opening displacements. (C) 2000 Elsevier Science Ltd. All r ights reserved.