Automated Operational Modal Analysis and Its Applications in Structural Health Monitoring.

Research in operational modal analysis (OMA) and its applications in structural health monitoring (SHM) have experienced significant efforts in the last decade. The proposed NExT-SSI method results in quite clear stabilization diagrams, whereby the same stabilization diagrams based on covariance-driven SSI (SSI-COV) are quite poor and fail to provide evidence of eigenfrequency stability with increasing model order. The paper by F. Liu et al., entitled "An introduction of a robust OMA method: CoS-SSI and its performance evaluation through the simulation and a case study", addresses the challenge of nonstationarity. [Extracted from the article]