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A test for interfacial effects and stress transfer in ceramic matrix composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1988 |
| Description | A test specimen was devised for measuring stress transfer between a high modulus fiber and a ceramic matrix. Single filaments of SiC were embedded in chemically vapor deposited SiC on a thin plate of molybdenum. The CVD overcoating which encapsulated the fiber was continuous with a coating of SiC on the molybdenum. When placed in a microtensile test device and loaded in the fiber direction, the fiber fracture characteristics provide information on the fiber/matrix adhesion and stress transfer. Problems were encountered due to the formation of a weak boundary between the SiC and the molybdenum which obviated any meaningful tensile tests. Also, the high CVD temperature used in fabricating these specimens restrict the fiber, matrix (and substrate) to materials having similar thermal coefficients of expansion in order to minimize thermal stresses. |
| File Size | 13377913 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880012810 |
| Archival Resource Key | ark:/13960/t57d7s35d |
| Language | English |
| Publisher Date | 1988-05-23 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Thermal Expansion Ceramic Matrix Composites Vapor Deposition Fracture Mechanics Stress Distribution Tensile Tests Silicon Carbides Fiber Orientation Adhesion Thermal Stresses Matrix Materials Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
