2015
DOI: 10.1590/01047760201521021674
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Orientation and Position Effects of a Local Heterogeneity on Flexural Vibration Frequencies in Wooden Beams

Abstract: Studying the influence of defect on the dynamic behavior of wood in order to detect the local heterogeneities is of great importance in non-destructive testing of wood. The natural heterogeneities in wood are oriented in a volume. However, onedimensional models are still used in dynamic characterization of wooden beams. The aim of this study was to experimentally investigate the effects of the orientation and position of an artificial defect on the flexural vibration frequencies. Different batches of Fagus ori… Show more

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“…If the material was perfectly homogeneous, R EW 2 would be equal to one. Otherwise, the presence and position of natural defects shifted the Eigen frequencies, lowering the R EW 2 value (Roohnia and Brancheriau 2015). The dynamic MOE corresponding to the first and second Eigen frequencies were correlated (MOE 1 EW and MOE 2 EW , R-squared value of 0.95).…”
Section: Stepwise Regression For Mormentioning
confidence: 96%
“…If the material was perfectly homogeneous, R EW 2 would be equal to one. Otherwise, the presence and position of natural defects shifted the Eigen frequencies, lowering the R EW 2 value (Roohnia and Brancheriau 2015). The dynamic MOE corresponding to the first and second Eigen frequencies were correlated (MOE 1 EW and MOE 2 EW , R-squared value of 0.95).…”
Section: Stepwise Regression For Mormentioning
confidence: 96%