TY - RPRT
T1 - Creep properties of discontinuous fibre composites with partly creeping fibres
AU - Bilde-Sørensen, Jørgen
AU - Lilholt, Hans
PY - 1977
Y1 - 1977
N2 - In a previous report (RISØ-M-1810) we analyzed the creep properties of discontinuous fibre composites with non-creeping fibres. In the present report this analysis is extended to include the case of discontinuous composites with partly creeping fibres. It is shown, that the creep properties of the composite at a given strain rate, εc, depend on the creep properties of the matrix at a strain rate higher than εc, and on the creep properties of the fibres at εc. The composite creep law is presented in a form which permits a graphical determination of the composite creep curve. This can be constructed on the basis of the matrix and the fibre creep curves by vector operations in a log εvs. log a diagram. The matrix contribution to the creep strength can be evaluated by a simple method.
AB - In a previous report (RISØ-M-1810) we analyzed the creep properties of discontinuous fibre composites with non-creeping fibres. In the present report this analysis is extended to include the case of discontinuous composites with partly creeping fibres. It is shown, that the creep properties of the composite at a given strain rate, εc, depend on the creep properties of the matrix at a strain rate higher than εc, and on the creep properties of the fibres at εc. The composite creep law is presented in a form which permits a graphical determination of the composite creep curve. This can be constructed on the basis of the matrix and the fibre creep curves by vector operations in a log εvs. log a diagram. The matrix contribution to the creep strength can be evaluated by a simple method.
KW - Risø-M-1936
M3 - Report
SN - 87-550-0467-9
T3 - Risø-M
BT - Creep properties of discontinuous fibre composites with partly creeping fibres
PB - Risø National Laboratory
CY - Roskile, Denmark
ER -