Probabilistic Neural Network and Fuzzy Cluster Analysis Methods Applied to Impedance-Based SHM for Damage Classification

Table 4

Optimization results of the Gustafson-Kessel algorithm for the aircraft panel.

	Iteration	Initial objective function value	Final objective function value
PZT1	139	3173,262	446,395
PZT2	102	831,342	118,823
PZT3	67	532244,526	5803,566
PZT4	47	602945,975	2788,759
PZT5	18	186,055	95,991
PZT6	131	3644,445	1594,554
PZT7	13	1041994,032	23013,747
PZT8	25	1452335,476	10885,113