Interfacial shear debonding problems in fiber-reinforced ceramic composites
| Autor: | Chun-Hway Hsueh, Paul F. Becher |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Fiber pull-out
Materials science Polymers and Plastics Metals and Alloys Fracture mechanics Young's modulus Electronic Optical and Magnetic Materials symbols.namesake visual_art Ceramics and Composites symbols Fracture (geology) visual_art.visual_art_medium Shear strength Ceramic Fiber Composite material Stress intensity factor |
| Zdroj: | Acta Materialia. 46:3237-3245 |
| ISSN: | 1359-6454 |
| Popis: | Toughening of fiber-reinforced ceramic composites by fiber pullout relies on mode II debonding at the fiber/matrix interface. This mode II debonding has been analyzed using the strength-based and the energy-based criteria, in which the interfacial shear strength and the interface debond energy are respectively adopted to characterize the debonding behavior. Using the concept of Griffith theory, an effective circumferential defect at the interface is defined to account for the stress intensity due to the presence of the fiber in the matrix and the fiber-pullout geometry. This effective circumferential defect is then used to derive the relation between the interfacial shear strength and the interface debond energy. Also, the condition of interfacial debonding vs fiber fracture for a bridging fiber behind the crack tip is established using the energy-based criterion. |
| Databáze: | OpenAIRE |
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