Structural damage identification based on information fusion technology

In order to improve the accuracy of structural damage identification, information fusion technology is introduced into structural damage identification. Firstly, the stiffness matrix damage factor iterative method and modal strain energy method are used to identify the structural damage, and give the decision vectors respectively. Then, the decision vectors are imported into the D-S evidence theory formula or the Bayes theory formula, the damage probability of every element would be obtained and the damage location would be determined finally. Numerical simulation of plane truss and model experiments of offshore platform show that the results of structural damage identification are more accurate and reliable after the information fusion techniques is used.