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Journal of Materials Engineering and Performance

Erschienen in:

01.12.2010

Damage Progression and Stress Redistribution in Notched SiC/SiC Composites

verfasst von: Andrew L. Gyekenyesi, Gregory N. Morscher

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 9/2010

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Abstract

The stress fields adjacent to machined notch roots were examined during tensile tests of woven SiC/SiC composites using thermoelastic stress analysis. As expected, the stress-concentration factor (SCF) at the notch roots increased with increasing notch lengths. Damage-induced stress-relief was not evident in these composites. In fact, the redistribution of stresses onto isolated fiber tows adjacent to the notch root caused an increase in the apparent SCF. Lastly, the SCF increased with mean stress. This was assumed to occur as a result of opening matrix cracks that are typically closed due to residual compressive stresses in the matrix material at near zero loads.

Vorheriger Artikel Constitutive Equation and Processing Map for Hot Deformation of SiC Particles Reinforced Metal Matrix Composites

Nächster Artikel Fracture of Open-Cell Nickel Foams Under Quasi-Static Tensile Loading

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Titel: Damage Progression and Stress Redistribution in Notched SiC/SiC Composites
verfasst von: Andrew L. Gyekenyesi
Gregory N. Morscher
Publikationsdatum: 01.12.2010
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 9/2010
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-010-9622-4

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