ASTM D143, ISO 3133, and EN 310 all dictate the testing procedures for flexural testing of wood beams.
Flexural testing is an ideal test because it encompasses tensile, compressive, and shear loading within the specimen.
Bend testing is the best way to compare different wood types between each other. The most common required calculations are flexural strength and shear strength.
The different standards may have slightly different requirements .
For example, ASTM D143, states that the lower support anvils of the three-point static bend fixture should be provided with bearing plates and the load should be applied to the center of the specimen by a rigid upper block.
However, ISO 3133 states that the support and load applying anvils should be rollers of a specified diameter.
Please read ASTM D143, ISO 3133, and EN 310 in order to fully understand the test setup, procedure, and results requirements
Keyword: wood bend, ASTM D143, ISO 3133, and EN 310, Flexural testing
ISO 16978:2003–Wood-based panels — Determination of modulus of elasticity in bending and of bending strength