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The effect of texture on the crack growth resistance of alumina
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shannon Jr., John L. Salem, Jonathan A. Bradt, Richard C. |
| Copyright Year | 1987 |
| Description | The crack growth resistance of a textured, extruded alumina body was compared with that of an isotropic, isopressed body of similar grain size, density, and chemistry. R-curve levels reflected the preferred orientation; however, R-curve slopes (dK sub IR/d Delta a) were the same in all instances, implying a similar crack growth resistive mechanism. Three orthogonal orientations of crack growth in the two structures exhibited similar forms of K sub IR versus Delta-a curves, for which a schematic diagram for polycrystalline ceramics is proposed. |
| File Size | 7863289 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880004824 |
| Archival Resource Key | ark:/13960/t8ff8p08p |
| Language | English |
| Publisher Date | 1987-01-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Isotropic Media Extruding Polycrystals Ceramics Orthogonality Crack Closure Aluminum Oxides Textures Crack Propagation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
