Table 3 Summarisation of the advantages and limitations of the ambient vibration testing

Advantages

Limitations

1. A convenient method for measuring the structure under service loading

2. No special excitation devices are required

3. Robust data

4. Non-destructive testing

5. The cost of the overall experiment is reduced

6. Can be performed during the normal operation of the structure

7. Practical for large and heavy structure use

1. Tedious setup, using many hundreds of metres of electric cables

2.Tough and shielded. Need to ensure minimal signal loss and interference over large distances

3. Estimated damping values are prone to errors

4. High-sensitivity sensors are required