Effect of Specimen Width on the Measurement of the Off-Axis Young’s Modulus of Plywood Using the Longitudinal Vibration Test

Abstract

The off-axis Young’s modulus of plywood was obtained by conducting longitudinal vibration tests using specimens with various widths and performing a subsequent numerical analysis on the test data. The off-axis Young’s modulus was dependent on the width of specimen particularly when the off-axis angle ranged from 30° to 60°, and it approached the value theoretically predicted by the transformation rule as the width of specimen increased. Therefore, the width of specimen should be sufficient to measure the off-axis Young’s modulus of plywood accurately using the longitudinal vibration test.