A Damage Prognosis Method of Girder Structures Based on Wavelet Neural Networks

Table 2

Training samples of the experimental design.

𝑁	Inputs of section stiffness (×10^−6 m^4)			Output of the fundamental frequency (Hz)
	Damage section-1	Damage section-2	Damage section-3
1	0.93	0.92	2.2	30.67
2	0.05	0.05	1.58	14.07
3	1.21	1.4	0.45	29.91
⋮	⋮	⋮	⋮	⋮
28	0.05	2.23	0.72	20.18
29	0.05	0.73	2.23	19.91
30	0.05	0.05	0.05	12.56