Effects of residual Si on the ablation properties of biomorphic C/SiC composites for reusable thermal protection systems

Kim, Joonhui; Kim, Seulgi; Song, Suhee; Lee, Dongju

doi:10.1080/09243046.2020.1790124

Cited by 4 publications

(2 citation statements)

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“…The C/SiC composite have already been applied in hot-section components in spacecraft thermal protection systems and rocket engines, for example, nose cap, vanes, and nozzles. [4][5][6] Under cyclic-fatigue loading, multiple coupled damage mechanisms contributed to the fatigue degradation in C/SiC composites. [7][8][9][10]12 conducted experimental and theoretical investigations on the cyclic-fatigue behavior in unidirectional (UD) and cross-ply (CP) C/SiC composite at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…At 1000°C, the torque was 3758 ± 855 N m and the torsion shear strength was 38.1 ± 8.7 MPa; and the flexural moment was 3127 ± 588 N m and the flexural strength was 63.9 ± 12 MPa. The C/SiC composite have already been applied in hot‐section components in spacecraft thermal protection systems and rocket engines, for example, nose cap, vanes, and nozzles 4–6 …”

Section: Introductionmentioning

confidence: 99%

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Prediction of fatigue limit stress in C/SiC composites: Effect of stochastic load spectrum

2024

Int J Applied Ceramic Tech

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Under cyclic‐fatigue loading, stochastic loading may occur and affect the fatigue limit stress (FLS) in C/SiC composites. In this paper, the FLSs in different C/SiC composites were predicted considering stochastic loading spectrums. Damage mechanisms of interface wear and fibers failure were considered in the global load sharing criterion to determine the fracture life and fiber's failure probability in three different stochastic loading spectrums, that is, constant, increasing and decreasing stochastic stress spectrum. Experimental FLS and fatigue life degradation rate were predicted using the developed micromechanical approach, and the effect of cyclic duration under stochastic spectrums on the FLS was analyzed. Relationships among the FLS, life degradation rate, stochastic spectrum, and cyclic duration were established.

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