Structural Fault Diagnosis Based on Static and Dynamic Response Parameters

Structural fault diagnosis is an important subject for ensuring the normal use of structures. More test data will help to improve accuracy and reliability structural diagnosis. Therefore, a detection algorithm based on static–dynamic mixed sensitivity analysis proposed. The vibration parameters used were modes some nodes in structure measured by system. static response parameter was vertical displacement under gravity load In particular, connected rigidly form new added-mass mode additional-mass system again obtain more equations evaluation. Based dynamic measurement data, failure coefficients all components calculated through vibration-mode shape. According value coefficient, state could be finally evaluated. main innovation proposed method as part defect implementation process effect this verified using numerical truss experimental steel beam structure. Moreover, results hybrid compared with those pure illustrate advantages method. research showed that has simple high accuracy. Especially symmetric structures, can successfully avoid possible missed diagnoses provides feasible identification.