Feasibility of Applying Mel-Frequency Cepstral Coefficients in a Drive-by Damage Detection Methodology for High-Speed Railway Bridges

In this paper, a drive-by damage detection methodology for high-speed railway (HSR) bridges is addressed, to appraise the application of Mel-frequency cepstral coefficients (MFCC) extract Damage Index (DI). A finite element (FEM) 2D VTBI model that incorporates train, ballasted track and bridge behavior presented. The formulation includes irregularities damaged condition induced in specified structure region. feasibility applying cepstrum analysis components indirect HSR by on-board sensors evaluated numerical simulations, which dynamic analyses are performed through code implemented MATLAB. Different scenarios simulated, as well external excitations such measurement noises different levels irregularities. results show MFCC-based DI highly sensitive regarding detection, robust noise. Bridge stiffness can be recognized satisfactorily at high speeds under Moreover, magnitude extracted from MFCC related relative severity damage. presented study should seen first attempt link cepstrum-based features an approach.