Patent ID: 11879814
Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A system for detecting internal defects in railway tracks, comprising:
a mobile defect detection platform, including:
an excitation mechanism to apply multiple impact forces to a railway track while the mobile defect detection platform travels along a railway track;
a first laser Doppler vibrometer to capture, while the mobile defect detection platform travels along the railway track, vibration data representing vibrations of the railway track caused by application of the multiple impact forces by the excitation mechanism at a first location relative to the excitation mechanism;
a second laser Doppler vibrometer to capture, while the mobile defect detection platform travels along the railway track, vibration data representing vibrations of the railway track caused by application of the multiple impact forces by the excitation mechanism at a second location relative to the excitation mechanism; and
a modal parameter analyzer to detect, based at least in part on the vibration data captured by the first laser Doppler vibrometer and the second laser Doppler vibrometer, P′ an internal defect in the railway track.