Performance of Fitness Functions Based on Natural Frequencies in Defect Detection Using the Standard PSO-FEM Approach

Table 1

Defect cases of the cantilever beam.

Cases	Types	Elements	Severity
A	Single defect	5	10%
B	Neighbor defects	5, 6	10%, 10%
C	Multiple defects	5, 6, 25	10%, 20%, 10%