ASTM D143 Test Methods for Small Clear Specimens of Timber

ASTM D143 | Wood | Various Testing

Below is a list of test procedures within ASTM D143 which can be carried out with a Universal Testing Machine or similar device:

1. Static Bending – unique bend fixture is required, along with means to measure displacement at the specimen’s neutral axis
2. Compression Parallel to Grain – Simple compression test of rectangular specimen stood up on its end
3. Compression Perpendicular to Grain – Simple compression test of rectangular specimen laid on its side
4. Hardness – Compression test using a “ball” shaped loading platen to determine the load required for the ball to penetrate to one half of its diameter
5. Shear Parallel to Grain – Compressive loading using a unique shear jig to hold the specimen
6. Cleavage – Tension using a unique test specimen geometry and grips that allows the grip ends to apply load within a circular opening on the specimen at one edge, and split the specimen apart
7. Tension Parallel to Grain – This tension test most clearly represents a standard tensile test on a dogbone shaped specimen where the specimen is pulled from its ends. The use of an extensometer is common.
8. Tension Perpendicular to Grain – This tension test uses a more unique specimen shape and associated grips that allow the specimen to be pulled apart from both sides in a similar fashion as the Cleavage test
9. Nail Withdrawal – Nails are to be driven into different faces & location of the specimen for immediate withdrawal using a simple tensile grip configuration

ASTM D143 | Wood | Various Testing