Official Journal of the Japan Wood Research Society
Table 1 Experimental values of exponents in Meyer law for balls and cylinders
From: An attempt to unify the Brinell, Janka and Monnin hardness of wood on the basis of Meyer law
Indenter | Wood sample | Exponent of power (Meyer index) n | Average n | n ≈ | ||
|---|---|---|---|---|---|---|
Ball | Norway Maple | 2.6443 | ||||
European Oak | 2.1730 | 2.58 | 2.6 | |||
American Sweetgum | 2.6041 | ± 0.15 | ||||
Large-leaf Linden | 2.9130 | |||||
Ball | Beech (sample C) | 2.3616 | 2.5210 | 2.7289 | 2.478 ± 0.055 | 2.5 = 5/2 |
Beech (sample D) | 2.4208 | 2.3875 | 2.4452 | |||
Cylinder | Beech (sample C) | 1.5120 | 1.3280 | 1.6968 | 1.483 ± 0.062 | 1.5 = 3/2 |
Beech (sample D) | 1.6226 | 1.3634 | 1.3756 | |||
Indenter diameter D (mm) | 10 | 15 | 30 | ± Standard error | ||