HARDNESS MODULUS AS AN ALTERNATE MEASURE OF HARDNESS TO THE STANDARD JANKA BALL FOR WOOD AND WOOD-BASE MATERIALS.
Forest Service research note,
FOREST PRODUCTS LAB MADISON WIS
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Comparisons of Janka-ball hardness values with hardness modulus load versus depth of penetration of the hardness tool on representative wood and wood-base materials indicate that a constant relationship exists between the two values. Author
- Wood, Paper and Related Forestry Products