Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites
The investigation of several parameters during fiber push‐out micromechanical tests on the interfacial shear strength (ISS) of the BN interphase in SiCf/SiC ceramic matrix composites (CMC) was undertaken to optimize experimental work. The SiCf/SiC composites—candidate materials for jet engine compon...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
American Ceramic Society
2021
|
| _version_ | 1797106183264272384 |
|---|---|
| author | De Meyere, RMG Gale, L Harris, S Edmonds, IM Marrow, TJ Armstrong, DEJ |
| author_facet | De Meyere, RMG Gale, L Harris, S Edmonds, IM Marrow, TJ Armstrong, DEJ |
| author_sort | De Meyere, RMG |
| collection | OXFORD |
| description | The investigation of several parameters during fiber push‐out micromechanical tests on the interfacial shear strength (ISS) of the BN interphase in SiCf/SiC ceramic matrix composites (CMC) was undertaken to optimize experimental work. The SiCf/SiC composites—candidate materials for jet engine components—were manufactured with varying fiber types and interlayer thicknesses. Experimental parameters explored included analyzing the effect of sample thickness on the success rate of micromechanical tests, the effect of fiber local environment whether at tow‐level (intra‐tow variability in ISS) or CMC architecture‐level (inter‐tow variability), the effect of nanoindenter flat‐punch tip size, and the effect of the interphase thickness itself. Over 1000 fiber push‐outs were performed and analyzed in this work—with data presented as cumulative distribution functions to compare and contrast samples. It was found that the ISS measured was strongly and statistically influenced by the underlying fiber roughness (interphase adherence), as well as its local fiber environment (e.g., number of nearest neighbors) only if the thickness of the interphase itself surpassed a threshold of 200 nm. Finally for thinner interphases, limited value was added to the CMC as the ISS measured was high and there was no effect from any local environment. |
| first_indexed | 2024-03-07T06:58:07Z |
| format | Journal article |
| id | oxford-uuid:fed1b159-b40a-42b1-8761-1d3aaa03bffd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:58:07Z |
| publishDate | 2021 |
| publisher | American Ceramic Society |
| record_format | dspace |
| spelling | oxford-uuid:fed1b159-b40a-42b1-8761-1d3aaa03bffd2022-03-27T13:39:49ZOptimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix compositesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fed1b159-b40a-42b1-8761-1d3aaa03bffdEnglishSymplectic ElementsAmerican Ceramic Society2021De Meyere, RMGGale, LHarris, SEdmonds, IMMarrow, TJArmstrong, DEJThe investigation of several parameters during fiber push‐out micromechanical tests on the interfacial shear strength (ISS) of the BN interphase in SiCf/SiC ceramic matrix composites (CMC) was undertaken to optimize experimental work. The SiCf/SiC composites—candidate materials for jet engine components—were manufactured with varying fiber types and interlayer thicknesses. Experimental parameters explored included analyzing the effect of sample thickness on the success rate of micromechanical tests, the effect of fiber local environment whether at tow‐level (intra‐tow variability in ISS) or CMC architecture‐level (inter‐tow variability), the effect of nanoindenter flat‐punch tip size, and the effect of the interphase thickness itself. Over 1000 fiber push‐outs were performed and analyzed in this work—with data presented as cumulative distribution functions to compare and contrast samples. It was found that the ISS measured was strongly and statistically influenced by the underlying fiber roughness (interphase adherence), as well as its local fiber environment (e.g., number of nearest neighbors) only if the thickness of the interphase itself surpassed a threshold of 200 nm. Finally for thinner interphases, limited value was added to the CMC as the ISS measured was high and there was no effect from any local environment. |
| spellingShingle | De Meyere, RMG Gale, L Harris, S Edmonds, IM Marrow, TJ Armstrong, DEJ Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title | Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title_full | Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title_fullStr | Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title_full_unstemmed | Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title_short | Optimizing the fibre push‐out method to evaluate interfacial failure in SiC/BN/SiC ceramic matrix composites |
| title_sort | optimizing the fibre push out method to evaluate interfacial failure in sic bn sic ceramic matrix composites |
| work_keys_str_mv | AT demeyerermg optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites AT galel optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites AT harriss optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites AT edmondsim optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites AT marrowtj optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites AT armstrongdej optimizingthefibrepushoutmethodtoevaluateinterfacialfailureinsicbnsicceramicmatrixcomposites |