Table 7 Variations in elastic moduli of alumina
| Â | Young's modulus | Linear compressibility | Shear modulus | Poisson's ratio | Â | ||||
|---|---|---|---|---|---|---|---|---|---|
Emin | Emax | βmin | βmax | Gmin | Gmax | νmin | νmax | ||
Value | 266.16 GPa | 399.71 GPa | 1.5841 TPa–1 | 1.8125 TPa–1 | 103.75 GPa | 173.38 GPa | 0.053073 | 0.3787 | Value |
Anisotropy | 1.502 | Â | 1.1442 | Â | 1.671 | Â | 7.1354 | Â | Anisotropy |
Axis | − 0.423 | 0.0012 | 0.8251 | − 0.003 | 0.2098 | − 0.002 | 0.5043 | − 0.633 | Axis |
|  | 0.6688 | 0.0027 | 0.5647 | − 0.034 | 0.3816 | 0.6798 | -0.0007 | − 0.009 |  |
|  | − 0.617 | 1 | 0.02 | 0.9994 | − 0.9002 | − 0.733 | 0.8635 | − 0.773 |  |
|  |  |  |  |  | − 0.879 | − 0.219 | -0.0014 | 0.7763 | Second axis |
|  |  |  |  |  | 0.4767 | − 0.715 | 1 | 0.0016 |  |
|  |  |  |  |  | − 0.0027 | − 0.669 | 0.0017 | − 0.633 |  |