Structural Health Monitoring Based on Combined Structural Global and Local Frequencies

Table 3

The errors of local primary frequencies of 4 kinds of elements.

Types	Identified (Hz)	Theoretical (Hz)	Error
Members-I	138.67	151.24	9.06%
Members-II	140.63	155.57	10.62%
Members-III	166.02	176.28	6.18%
Members-IV	164.06	186.52	13.69%