Discrimination of Internal Quality of Agricultural Products Using Response Properties for Vibration (Part 2)

Relationship between Quality of Watermelon and Damping Coefficient of Vibrational Wave

Abstract

An easy nondestructive discrimination method for detecting internal quality of watermelon, especially maturity, was proposed. Damping coefficients of vibrational waves were obtained by considering the watermelon as a simple viscoelastic system of spring and damping, supporting a concentrated mass and correlated with observed sensed values. The relationship between damping coefficients and hitting power, stored temperature and stored time were investigated, and basic data were obtained for sorting, packing, handling and storing watermelons.