Monitoring Dynamic Properties of Railway Tracks Using Train-borne Vibrometer Measurement
Y. Zeng (TU Delft - Railway Engineering)
Zili Li – Promotor (TU Delft - Railway Engineering)
AA Nunez Vicencio – Copromotor (TU Delft - Railway Engineering)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Monitoring the dynamic properties of railway tracks is essential for the safety of train operation and the efficiency of track maintenance. Several vibration-based technologies are available for measuring such properties, but each has its limitations such as low efficiency and limited frequency band. There is still a lack of train-borne technologies applicable to extracting the load-response relationship of track structures, especially when a variety of track components and a wide frequency range are concerned. A laser Doppler vibrometer (LDV) is a noncontact sensing instrument for vibration measurement. A train-borne LDV can target its laser spot on tracks, continuously scan track structures during train operation, and directly measure track vibrations in response to the moving train. It has the potential to complement existing technologies and monitor the dynamic properties of railway tracks.
This dissertation develops a new technology based on train-borne LDV for measuring the vibration and load-response relationship of railway tracks over a wide frequency range…
help_outline