Graphical Analysis of Static and Dynamic Elastic Modulus of Shaving Sheet

Abstract

The traditional measurement method of thin wood-based panel’s elastic modulus is carried out on the test piece for three-point or four-point bending static deformation test, the determination process is complex, time consuming, and makes damage to specimen. Use materials mechanics quick measuring instrument of sheet board wood, which is self-developed and based on the principle of cantilever’s free vibration and cantilever bending to test three standards of thin wood-based panels’ and medium density fiberboard’s dynamic modulus of elasticity and static bending elastic modulus, use SPSS (Statisti-cal Program for Social Sciences) software to establish the relationship graphics of sheet’s dynamic and static bending modulus of elasticity, relationship graphics of dynamic bending and three-point bending elastic modulus, and use linear regression to do correlation analysis on measurement results, while taking advantage of three-point bending to measure same test pieces’ three-point bending modulus of elasticity to compare and authenticate. The results show that: the average of cantilever vibration dynamic elastic modulus is higher than cantilever bending static elastic modulus, and there is a very significant linear correlation between them; cantilever vibration dynamic modulus of elasticity and three-point bending modulus of elasticity have significant linear correlation, which shows that taking advantage of materials mechanics fast measuring instrument of sheet wood to measure the modulus of elasticity of thin wood-based panel and medium density fiberboard quickly.