Wood Beam Damage Identification Based on the Curvature Mode and Wavelet Transform

Table 5

Difference of wavelet coefficients for different degrees of damage at two locations.

Damage locations (mm)	Degrees of damage (%)	Differences of wavelet coefficients
520–560	1	0.00861
	2.5	0.03021
	5	0.07732
	10	0.20317
	15	0.3495
	20	0.47594
	30	0.7406
1040–1080	1	0.01257
	2.5	0.04034
	5	0.10942
	10	0.29704
	15	0.49628
	20	0.67856
	30	1.02204