Comparison of Nondestructive Testing Methods on Detection of Delaminations in Composites

Table 1

Comparison of PEC-stimulated thermography, flash thermography, and UT/EC scanning.

	PEC stimulated thermography	Flash thermography	UT scanning	EC scanning
Image for sample 1
Detected depth	Up to 930 μm deep	Up to 930 μm deep	Up to 1550 μm deep	None
Fibre orientation	Good	No	No	—
Defect visualisation	Good	Good	Not good	—
Inspection time	~Seconds	~Seconds	~Minutes to hours	—
Cost	Low	Low	High	—