Methods and sensitivity for pass-by measurement of track decay rates
conference paper
Track decay rates are measured to characterize the track dynamics for railway noise type testing,
but also for other purposes in relation to railway noise. They are often measured statically using
hammer response functions on unloaded track, but can also be derived from rail vibrations on
loaded track during a train pass-by. There are several methods for decay rate estimation from passby
data, which are described in this paper and compared in terms of results and sensitivity. They
include manual slope estimation or semi-automated derivative or energy iteration methods, all
using a single accelerometer. The effects of some of the influence factors are discussed including
the effect of manual selection, train speed and others.
but also for other purposes in relation to railway noise. They are often measured statically using
hammer response functions on unloaded track, but can also be derived from rail vibrations on
loaded track during a train pass-by. There are several methods for decay rate estimation from passby
data, which are described in this paper and compared in terms of results and sensitivity. They
include manual slope estimation or semi-automated derivative or energy iteration methods, all
using a single accelerometer. The effects of some of the influence factors are discussed including
the effect of manual selection, train speed and others.
TNO Identifier
461878
Source title
9th European Conference on Noise Control, EURONOISE 2012, 10-13 June 2012, Prague, Czech Republic
Files
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