14.8.2. Forced Vibration Test

Try these first

1. 1.

   What is a Forced Vibration Test?

   Hint

   Think about how engineers assess structures under loads.

2. 2.

   Name one piece of equipment used in Forced Vibration Tests.

   Hint

   What device measures acceleration and vibrations?

3. 3.

   What is the primary purpose of a Forced Vibration Test?

   • To apply realistic strains to structures
   • To measure the response to an applied force
   • To observe ambient vibrations

   Hint

   Think about the main goal of applying controlled forces.

4. 4.

   True or False: Ambient Vibration Tests are preferred over Forced Vibration Tests because they are less invasive.

   • True
   • False

   Hint

   Consider the invasiveness of the testing methods.

5. 5.

   Suppose a building has a natural frequency of 2 Hz. During a Forced Vibration Test, an external force applied is at 2 Hz. What phenomenon occurs, and what are its implications for the building?

   Hint

   Relate to what happens when external frequency matches the natural frequency.

6. 6.

   Consider a scenario where a historical building is subjected to a Forced Vibration Test. Discuss the ethical and structural considerations that must be taken into account.

   Hint

   Balance between safety data needs and preservation.