In this research, piezoelectric transducers are incorporated in an impedance-based damage detection approach
for railway track health monitoring. The impedance-based damage detection approach utilizes the direct
relationship between the mechanical impedance of the track and electrical impedance of the piezoelectric transducer
bonded. The effect of damage is shown in the change of a healthy impedance curve to an altered, damaged curve.
Using a normalized relative difference outlier analysis, the occurrences of various damages on the track are
determined. Furthermore, the integration of inductive circuitry with the piezoelectric transducer is found to be able
to considerably increase overall damage detection sensitivity.