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Determination of plate sources, detector separation from one signalHolland, Stephen ...We address the problem of locating a transient source, such as an acoustic emission source, in a plate. We apply time-frequency analysis to the signals detected at a receiver. These highly dispersive ... and complex waveforms are measured for source-receiver separations ranging from 40 to 180 plate thicknesses and at frequencies such that 10 to 20 Rayleigh-Lamb branches are included. Reassigned, smoothed, pseudo-Wigner-Ville distributions are generated that exhibit the expected sharp ridges in the time-frequency plane, lying along the predicted frequency-time-of-arrival relations. The source-receiver separation can be determined from such plots.Source: Ultrasonics. - ISSN 0041-624X (Letn. 38, št. 1/8, 2000, Str. 620-623)Type of material - article, component partPublish date - 2000Language - englishCOBISS.SI-ID - 3674907
Link(s):
http://www.sciencedirect.com/science/journal/0041624XDOI:10.1016/S0041-624X(99)00206-1
Dostop do polnega teksta samo za člane
Author
Holland, Stephen |
Kosel, Tadej |
Weaver, Richard |
Sachse, Wolfgang
Topics
emisije akustične |
lokatorji emisij |
izvori emisije |
detektorji akustični |
lociranje izvorov |
analize časovne |
ultrazvok |
širjenje valov |
acoustic emission |
plate modes |
source detector separation |
source location |
spectrogram |
time frequency analysis |
ultrasound |
wave dispersion |
Wigner-Ville distribution
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Kosel, Tadej | 15696 |
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