Reconstruction of sleeper displacements from measured accelerations for model-based condition monitoring of railway crossing panels

Railway switches and crossings (S&C, turnouts) connect different track sections create a railway network by allowing trains to change tracks. This functionality comes at cost as the load-inducing rail discontinuities in switch crossing panels cause much larger degradation rates for S&C compared regular plain line The high make remote condition monitoring an interesting prospect infrastructure managers optimise maintenance ensure safe operations. To this end, paper addresses development of tailored signal processing tools using embedded accelerometers panels. Multibody simulations dynamic train–track interaction are used aid interpretation measured signals first step towards building model-based system. An analysis is performed sleeper acceleration measurement data generated 100 000 train passages eight Based on given data, novel frequency-domain displacement reconstruction method developed robustness with respect encountered operational variability demonstrated. separation response into quasi-static domains based deformation wavelength regions proposed promising strategy observe ballast geometry condition, respectively.