Free Vibration Analysis of Patch Repaired Plates with a Through Crack by -Convergent Layerwise Element

Table 2

Material properties.

Material	(GPa)	, (GPa)	, (GPa)	(GPa)	, ,	(kg/mm^3)
Steel	200	200	76.9	76.9	0.3	2.7 × 10^−6
Film adhesive	3.068	3.068	1.138	1.138	0.35	0.33 × 10^−6
Boron/epoxy	223.4	24.13	8.481	5.275	0.23	2.1 × 10^−6