Premium
Effect of Fiber Bridging Stress on the Fracture Resistance of Silicon‐Carbide‐Fiber/Zircon Composites
Author(s) -
Wang YuLin,
Anandakumar Umashankar,
Singh Raj N.
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01355.x
Subject(s) - materials science , composite material , silicon carbide , bridging (networking) , residual stress , ceramic matrix composite , ceramic , composite number , fracture (geology) , fiber , boron carbide , stress (linguistics) , computer network , linguistics , philosophy , computer science
The room‐temperature fracture‐resistance behavior ( R ‐curve) of unidirectional silicon‐carbide‐fiber‐reinforced zircon‐matrix composites has been studied experimentally and numerically. The composites showed strong rising R ‐curve behavior from experimental results that used in situ crack‐length measurements taken via optical microscopy as well as the compliance method. A numerical calculation, based on the available models, then was performed to determine the bridging‐stress function from the experimental R ‐curve. In addition, the effect of the residual stress and constituent properties on the bridging‐stress function also has been considered in the numerical calculations. These results have indicated that the bridging‐stress function, which controls the fracture resistance of ceramic composites, can be obtained from the carefully measured R ‐curve.