2016
SESDE 2016 Proceeding
Modeling mechanical damage to corn seeds
Authors: F. Shahbazi
Abstract
The experiments were conducted at moisture contents of 7.60 to 25% (wet basis) and at the impact energies of 0.1, 0.2 and 0.3 J, using an impact damage assessment device. The results showed that impact energy, moisture content, and the interaction effects of these two variables significantly influenced the percentage physical damage in corn seeds (p<0.01). Increasing the impact energy from 0.1 to 0.3 J caused a significant increase in the mean values of damage from 23.73 to 83.49%. The mean values of physical damage decreased significantly by a factor of 1.92 (from 83.75 to 43.56%), with increase in the moisture content from 7.6 to 20%. However, by a higher increase in the moisture from 20 to 25%, the mean value of damage showed a non- significant increasing trend. There was an optimum moisture level about 17 to 20%, at which seed damage was minimized. An empirical model developed composed of seed moisture content and energy of impact developed for accurately description the percentage physical damage to corn seeds. It was found that the model has provided satisfactory results over the whole set of values for the dependent variable.
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