Structure damage identification method based on fusion sensitivity with dynamic and static test

Based on the displacement and frequency sensitivity matrix, a structure damage identification method of fusion sensitivity is presented by using two kinds of dynamic and static test data in this paper. The advantage of the sensitive effects of all structures is taken by using the displacement responses and the whole measurements of structural vibration characteristics, a fusion of two different types of response data in the level of sensitivity is made in this method. A fusion criterion: DIFC (Damage Identification Fusion Criterion) is also proposed. The detailed analysis of the steps of the fusion sensitivity structural damage identification method is given. The proposed approach is demonstrated and compared with the two single load cases sensitivity method in a numerical example: fusion sensitivity method is more sensitivity especially to small damage, and it can identify damage location and level accurately.