ISO 3133 Wood Static Bending Test

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The purpose of this test is to empirically determine the modulus of rupture or bending modulus of wood. The test machine is configured with a 3 point bend fixture, with 30 mm diameter rollers. The specimens are sized to be 20mm square by 300 to 380mm long. Span should be set in the range of 240 to 320mm. Rate of loading should be set such that the test takes 1 to 2 minutes. Modulus of rupture can be calculated for the maximum force and deflection data obtained from the test.

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