PREDICTION OF CORN KERNEL STRESS AND BREAKAGE INDUCED BY DRYING, TEMPERING, AND COOLING.

J. Bruce Litchfield, Martin R. Okos

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this study is to develop a mathematical methodology to qualify corn kernel breakage caused by drying processes. Stresses, predicted for a viscoelastic sphere with the physical properties of horny endosperm, were calculated as functions of predicted moisture and temperature gradients in the sphere. Combined processes of drying, tempering (holding the grain at elevated temperatures), and cooling were evaluated. The moisture gradients and, to a lesser degree, the temperature gradients, were sig- nificant in stress development and relaxation. Since the results indicate that the predicted stresses follow the same trends as published experimental results for the breakage susceptibility of corn, the potential exists for this method to be used as a design tool to estimate the extent of kernel stress and breakage caused by a drying process.

Original languageEnglish (US)
Pages (from-to)585-594
Number of pages10
JournalTransactions of the American Society of Agricultural Engineers
Volume31
Issue number2
StatePublished - Mar 1 1988

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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