Defect Detection in Composite Products Based on Sparse Moving Window Principal Component Thermography

Table 1

SNR₁ of different methods.

Methods/SNR1/defect	Def_1	Def_2	Def_3	Def_4	Def_5	Def_6	Def_7	Sum
PCT	3.35	2.48	2.76	2.66	1.10	0.79	0.90	14.04
SPCT	3.67	2.70	3.01	2.89	1.21	0.88	0.98	15.32
MWPCT	4.32	2.94	3.19	3.11	1.14	0.77	0.94	16.42
SMWPCT	4.45	3.21	3.62	3.37	1.39	0.99	1.11	18.15