1.5. Bending Test (Modulus of Rupture and Modulus of Elasticity)

Try these first

1. 1.

   What is the modulus of rupture?

   Hint

   Think about what happens to a material when it is stressed.

2. 2.

   What does the modulus of elasticity indicate?

   Hint

   Consider how easily a material bends.

3. 3.

   What does Modulus of Rupture (MOR) measure in timber?

   • Heat resistance
   • Maximum bending strength
   • Flexibility

   Hint

   Think about how we test materials under load.

4. 4.

   True or False: The Modulus of Elasticity (MOE) indicates how much a material can twist.

   • True
   • False

   Hint

   Focus on the bending aspect of this property.

5. 5.

   A wooden beam with a cross-section of 60 mm x 120 mm and a span of 2 meters fails under a load of 2500 N. Calculate the MOR and discuss its structural implications.

   Hint

   Break down the formula into its components to calculate each part carefully.

6. 6.

   If two beams of different depths are tested under the same load, predict how their deflections will differ and justify your reasoning based on MOE and strength.

   Hint

   Use examples from previous calculations to demonstrate the concept.