Temperature-dependent proportional limit stress of SiC/SiC fiber-reinforced ceramic-matrix composites

Abstract: In this paper, the temperature-dependent proportional limit stress (PLS) of SiC/SiC fiber-reinforced ceramic-matrix composites (CMCs) is investigated using the micromechanical approach. The PLS of SiC/SiC is predicted using an energy balance approach considering the effect of environment temperature. The relation between the environment temperature, PLS, and composite damage state is established. The effects of the fiber volume, interface properties, and matrix properties on the temperature-dependent PLS and composite damage state of SiC/SiC composite are analyzed. The experimental PLS and interface debonding length of 2D SiC/SiC composites with the PyC and BN interphase at elevated temperatures are predicted. The temperature-dependent PLS of SiC/SiC composite increases with the fiber volume, interface shear stress and interface debonding energy, and the matrix fracture energy and decreases with the interface frictional coefficient at the same temperature.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Temperature-dependent proportional limit stress of SiC/SiC fiber-reinforced ceramic-matrix composites ; volume:39 ; number:1 ; year:2020 ; pages:209-218 ; extent:10
High temperature materials and processes ; 39, Heft 1 (2020), 209-218 (gesamt 10)

Urheber
Li, Longbiao

DOI
10.1515/htmp-2020-0052
URN
urn:nbn:de:101:1-2501280401363.493313063210
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:27 MESZ

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Beteiligte

  • Li, Longbiao

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