OPTIMUM SLOPE OF LOAD–DEFLECTION CURVE FOR BENDING YOUNG’S MODULUS DERIVATION

Abstract

This paper presents results of a study to assess the optimum slope of load–deflection curve to be used in bending Young’s modulus calculation. Bending tests were carried out in accordance with Japanese Agricultural Standard for Plywood to generate data and plots for load versus deflection. Thus, an empirical assessment was designed to determine unstipulated points that would be able to meet the standard requirement. Raw data of the plots were processed to identify the most linear part using standard deviation analysis of compared average slopes. Results of 10 test specimens were presented and discussed. The best-fitted linear line analysis was used to propose delta load and delta deflection preference for practice.