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Effect of the Matrix and Matrix Bonding on the Creep Behavior of a Unidirectional Carbon–Carbon Composite
Author(s) -
Sines George,
Yang Zheng,
Vickers Brian D.
Publication year - 1989
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.1151-2916.1989.tb05953.x
Subject(s) - creep , materials science , composite material , composite number , carbon fibers , matrix (chemical analysis) , stress (linguistics) , plasticity , deformation (meteorology) , philosophy , linguistics
Creep tests were performed on single‐bundle carbon–carbon specimens at high temperatures (>2310°C) and at high stress levels (>770 MPa). It was found that the creep was very strongly dependent on the filament–matrix interfacial bond. When the bond was good, the typical creep was 3.6% after 5.9 h with the primary creep a high percentage of the total deformation. When the bond was absent (dry bundle), rupture with strain was approximately 140%, and it occurred after only 0.39 h. The marked improvement in creep resistance is attributed to the ability of the matrix to distribute loads evenly and to produce a plastic flow inhibiting triaxial stress state among the filaments.