Experimental determination of bending strain power spectra from vibration measurements |
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Authors: | Y. Xu R. N. Miles |
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Affiliation: | (1) Roush Anatrol, 94086 Sunnyvale, CA;(2) Department of Mechanical and Industrial Engineering, State University of New York, 13902-6000 Binghamton, NY |
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Abstract: | Experimental results are presented of the power spectral density of the random bending strain on the surface of a beam obtained using a scanning laser vibrometer. The strain spectra were obtained by processing vibration data measured at discrete locations along the beam's length. The beam was driven by a stationary broad-band random force. The experimental setup is described along with the data analysis procedure. The results presented here indicate that the method is practical and can lead to reliable estimates. |
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