2004
DOI: 10.1016/j.measurement.2003.07.005
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Measuring area vibration mode shapes with a continuous-scan LDV

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Cited by 92 publications
(51 citation statements)
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“…The authors have typically chosen the scan frequency to be large relative to the natural frequencies of interest in order to simplify matters [12,28], although in this work smaller scan frequencies are explored since they make the spectra easier to interpret and reduce laser speckle noise [29,30]. Other researchers, such as Stanbridge et al typically use relatively small scan frequencies in their work, see [5][6][7][8] for examples.…”
Section: Validationmentioning
confidence: 99%
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“…The authors have typically chosen the scan frequency to be large relative to the natural frequencies of interest in order to simplify matters [12,28], although in this work smaller scan frequencies are explored since they make the spectra easier to interpret and reduce laser speckle noise [29,30]. Other researchers, such as Stanbridge et al typically use relatively small scan frequencies in their work, see [5][6][7][8] for examples.…”
Section: Validationmentioning
confidence: 99%
“…The response stands out above the noise (due to imperfection in the LDV and to the non-flatness of the input spectrum) by about one order of magnitude. Table 1 shows the normalized Fourier coefficient vectors identified from the 5 harmonics shown in C and 1,7 C in Table 1), but those terms are from weakly represented peaks in the spectrum and so they become much smaller applying the weighted average. The mode shapes reconstructed from these Fourier coefficient vectors are plotted in Figure 5, as well as the averaged mode shape from the weighted average of all of the Fourier coefficients.…”
Section: Validationmentioning
confidence: 99%
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“…One exception is continuous-scan laser Doppler vibrometry (CSLDV), which can also be thought of as a special case of LTP system identification. A number of effective methods have been developed for CSLDV and they have been used with real measurements demonstrating very good results in many cases [34][35][36][37][38][39][40][41][42]. On the other hand, many of those methods are specialized to CSLDV and not immediately applicable to time-periodic systems in general.…”
Section: Introductionmentioning
confidence: 99%
“…The SLDV does not measure each point simultaneously; each point is measured in turn, and then the measured signals are combined to provide a view of the overall deflection motions (an exception to this is the Continuous-Scan LDV as described by Stanbridge et al [14]). The algorithms that perform these calculations are generally proprietary and not typically available to the researcher; therefore it is unknown whether they are valid in the case of non-linear vibrations, particularly if chaotic motions are encountered.…”
Section: Introductionmentioning
confidence: 99%