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

Table 6

Classification of test set of probabilistic neural networks for each PZT patch of the aircraft window.

		Baseline	Damage 1	Damage 2	Error%
PZT1	✓	21	8	12	48,75%
	✗	19	12	8
Total		40	20	20
PZT2	✓	36	16	20	10%
	✗	4	4	0
Total		40	20	20
PZT3	✓	20	3	7	62,5%
	✗	20	17	13
Total		40	20	20
PZT4	✓	19	7	13	51,25%
	✗	21	13	7
Total		40	20	20
PZT5	✓	21	8	13	47,5%
	✗	19	12	7
Total		40	20	20
PZT6	✓	17	9	9	56,25%
	✗	23	11	11
Total		40	20	20
PZT7	✓	40	19	20	1,25%
	✗	0	1	0
Total		40	20	20
PZT8	✓	33	15	20	18,75%
	✗	7	8	0
Total		40	20	20
PZT9	✓	33	15	20	11,25%
	✗	7	5	0
Total		40	20	20