Characterization and modeling of tensile properties of continuous fiber reinforced C/C-SiC composite at high temperatures
Veröffentlichungsdatum
2021-02-15
Zusammenfassung
The material behavior of Polymer Infiltration and Pyrolysis based SiC/SiCN composites is studied and the characteristic thermal and mechanical properties in on- (0/90 ◦) and off-axis (±45 ◦) direction are summarized. The tensile properties are determined at room temperature and 1300 ◦C. Based on the ratio of Young’s modulus and strength between on- and off-axis loading, a new approach for the classification of Weak Matrix Composites (WMC) and Weak Interface Composites (WIC) is proposed, which seems to be reasonable for various CMCs. Even without fibre coating mechanical behavior of SiC/SiCN is similar to that of WIC. In order to explain this, a microstructure model is developed and confirmed by analysis of fracture surface. The effect of temperature on
the tensile properties is investigated through analysis of residual thermal stresses. Even though at 1300 ◦C the strength is slightly lower, the fracture strain increased significantly from RT to 1300 ◦C.
the tensile properties is investigated through analysis of residual thermal stresses. Even though at 1300 ◦C the strength is slightly lower, the fracture strain increased significantly from RT to 1300 ◦C.
Schlagwörter
Ceramic-matrix composites (CMCs)
;
SiC/SiCN
;
Mechanical behavior
;
Weak Matrix Composites (WMC) and Weak Interface Composites (WIC)
;
High-temperature properties
Verlag
Elsevier {BV}
Institution
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Band
41
Heft
5
Startseite
3061
Endseite
3071
Seitenzahl
11
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Sprache
Englisch
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Name
SHI - Characterization and modeling of tensile properties.pdf
Size
2.31 MB
Format
Adobe PDF
Checksum
(MD5):dceffc4172ff242e74557c5cf05d15bb