The Effect of Hen Breeds on the Egg Response to the Non Destructive Impact

• Main Authors: Ivo Křivánek, Ladislav Máchal, Lukáš Tunka
• Format: Article
• Language: English
• Published: Mendel University Press 2016-01-01
• Series: Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
• Subjects: hen breed; eggshell strength; non-destructive impact; frequency response; dominant frequency; dynamic stiffness
• Online Access: https://acta.mendelu.cz/64/4/1191/

The paper deals with the evaluation of the effect of hen breed on the egg response to the non-destructive impact. The eggs of four hen breeds (Leghorn White, Rhode Island Red, Bar Plymouth Rock and Sussex Light) were tested. An experimental system was set up to generate the impact force, measure the response wave signal, and analyse the frequency spectrum in the three direction of loading (sharp end, equator, blunt end). The egg dynamic resonance frequency was obtained through the analysis of the dynamically measured frequency response of an egg excited by light impact of a bar. The results showed that the dominant frequency was significantly affected by the hen bread and not significantly affected by excitation velocity. The dominant frequency enables to estimate the eggshell strength under quasi static compression.