Fatigue Cracks Detection and Quantification in a Four-Story Building using a Nonlinear Index and Vibration Signals

One common damage in civil structures is the fatigue crack, where its detection in an incipient stage is vital because it can prevent catastrophic failures. This work proposes a new non-linear index based on the combination of statistical indices, principal component analysis, and Mahalanobis distance for detecting and quantifying the level of severity of fatigue cracks in a four-story building su...