✦ LIBER ✦

Estimation of Random Bending Strain in a Beam from Discrete Vibration Measurements

✍ Scribed by R.N. Miles; W. Bao; Y. Xu

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 275 KB
Volume: 174
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1994.1271

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✦ Synopsis

A method is presented for using vibration measurements obtained at discrete locations on a randomly excited beam to estimate the power spectral density of bending strain. The technique is intended to be applied using a scanning laser vibrometer to allow a non-contacting measurement of random bending strain over the surface of a structure. The theory behind the measurement method is presented, along with results of numerical simulations. The results indicate that the method is practical and can lead to reliable estimates.

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✍ Y. Xu; R.N. Miles 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 460 KB

Experimental results of a non-contacting, full-field measurement of random bending strain over the surface of a two-dimensional structure are presented. The method is based on a combination of the measurement of random vibration at discrete points on the structure using a scanning laser vibrometer a