Abstract
An experimental system has been used to generate the impact force, measure the response wave signal, and analyse the frequency spectrum for physical property of Ostrich eggshell. The effects of excitation point, detected point and impact intensity on the eggshell response to a light mechanical impact were analysed. The aim of this study consists in the evaluation of the main vibration properties which can be used for the detection of cracks in the eggshell. Four variables were investigated to determine if they are significant for classifying eggs by setting up relationship x- and y-coordinates, including the first dominant resonance frequency, the normalization average of the frequency domain, the average of the frequency domain, and the average x- and y-coordinates of the centroid for the frequency domain. The egg dynamic resonance frequency was obtained through the analysis of the dynamically measured frequency response of an egg excited by pendulum.
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