Mechanical investigation of weak regions in a wound oxide-oxide ceramic matrix composite
| Autor: | Nils Rahner, Ferdinand Flucht, Viacheslav Vasechko |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Composite number wound CMC Oxide 02 engineering and technology mechanical properties 021001 nanoscience & nanotechnology 01 natural sciences Matrix (geology) Shear (sheet metal) chemistry.chemical_compound Flexural strength chemistry 0103 physical sciences Ultimate tensile strength Materials Chemistry Ceramics and Composites Material failure theory Composite material 0210 nano-technology Layer (electronics) oxide-oxide CMC |
| Zdroj: | Journal of the European Ceramic Society. 38:5192-5199 |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2018.05.009 |
| Popis: | The main aim of the investigation was to quantify the influence of production-related cross-lines on static mechanical properties (tensile, flexural and shear) of an oxide-oxide CMC as a comparison between specimens with cross-lines and specimens without cross-lines in tested regions. Investigated material was a weak-matrix oxide-oxide CMC (WHIPOX™) made of Nextel™ 610 fibers (3000 denier) and alumina matrix with a special winding pattern. Mechanical tests at room temperature revealed that cross-lines were local weak regions in a wound component. Spatial separation of the cross-line within the composite (2 mm shift from layer to layer) did not improve the negative influence of the cross-lines on mechanical properties. Fractographic investigations revealed that cross-lines acted as a trigger of material failure. |
| Databáze: | OpenAIRE |
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