1.5. Fatigue Failure

Try these first

1. 1.

   What is fatigue failure?

   Hint

   Think about repeated stress on materials.

2. 2.

   Define microcracks in the context of concrete.

   Hint

   Consider what happens when materials are stressed repeatedly.

3. 3.

   What leads to fatigue failure in concrete?

   • A single heavy load
   • Repeated cyclic loading
   • Low humidity

   Hint

   Remember the definition of fatigue failure.

4. 4.

   True or False: Fatigue failure occurs only when stress exceeds the ultimate strength.

   • True
   • False

   Hint

   Think about how repeated loading affects materials.

5. 5.

   A concrete slab in an industrial facility receives constant load variations from machinery. Discuss how you would assess its risk for fatigue failure.

   Hint

   Think about the signs of wear and prior stress conditions.

6. 6.

   Analyze the role of proper design in mitigating fatigue failure. What strategies would you implement?

   Hint

   Consider how different designs can spread loads and minimize potential stress points.