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The study of eggshell quality re quires a means of measuring shell strength to predict its ability to survive processes used in production, transportation and marketing. Be cause the variation in shell strength is high, large numbers of eggs must be tested to obtain reliable data. Thus any method used must require minimum labor. It has been shown that shell strength can be measured by compressing the egg between flat plates and that such a test yields a linear force-deformation curve. The fracture force (F) and total deformation (D) may be used to calculate shell stiff-ness
the rapid measurement of eggshell strength
Voisey, Peter W. and G. D. Robertson 1969. THE RAPID MEASUREMENT OF EGGSHELL STRENGTH. Canadian Agricultural Engineering 11(1):6-8.
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