14.8. Experimental Determination of Natural Frequency

Try these first

1. 1.

   What is ambient vibration testing?

   Hint

   Think about the natural forces acting on a structure.

2. 2.

   Define forced vibration test.

   Hint

   Consider the application of external forces.

3. 3.

   What method uses environmental vibrations to determine structural frequency?

   • Forced Vibration Test
   • Free Vibration Method
   • Ambient Vibration Testing

   Hint

   Focus on the non-intrusive aspect of the method.

4. 4.

   True or False: Forced vibration tests are less accurate than ambient vibration tests.

   • True
   • False

   Hint

   Think about the nature of measurements taken.

5. 5.

   Design an experiment using the free vibration method to determine the natural frequency of a tall building post-earthquake. Detail necessary equipment and steps.

   Hint

   Consider the building's safety and the need for temporary displacement.

6. 6.

   Evaluate the benefits of using forced vibration tests over ambient methods in a high-stakes structural evaluation scenario.

   Hint

   Think about scenarios involving significant human safety implications.