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Effect of Loading Rate on Hen’s Eggshell Mechanics

Author

Listed:
  • Trnka, Jan
  • Buchar, Jaroslav
  • Severa, Libor
  • Nedomová, Šárka
  • Stoklasová, Pavla

Abstract

The study is focused on analysis of mechanical behavior of hen’s eggshell expressed in terms of average rupture force and corresponding deformation. Some other physical properties such as mass, length, diameter, geometric mean diameter, surface area, sphericity, and volume were also evaluated. The egg samples were compressed along their X and Z-axes. Two different experimental methods were used: compression between two plates (loading rates 0.0167, 0.167, and 1.67 mm/s) and impact of a free-falling cylindrical bar (loading rates up to 17 mm/s). Surface displacement and surface velocity were measured using the laser-vibrometer. The increase in rupture force with loading rate was observed for loading in all direction (along main axes). Dependence of the rupture force on loading rate was quantified and described. The highest rupture force was obtained when the eggs were loaded along the X-axis. Compression along the Z-axis required the least compressive force to break the eggshells.

Suggested Citation

  • Trnka, Jan & Buchar, Jaroslav & Severa, Libor & Nedomová, Šárka & Stoklasová, Pavla, 2012. "Effect of Loading Rate on Hen’s Eggshell Mechanics," Journal of Food Research, Canadian Center of Science and Education, vol. 1(4).
    • Handle: RePEc:ags:aesjfr:405030
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    File URL: https://ageconsearch.umn.edu/record/405030/files/19064-71381-1-PB.pdf
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    References listed on IDEAS

    as
    1. M. Lichovníková & L. Zeman & J. Jandásek, 2008. "The effect of feeding untreated rapeseed and iodine supplement on egg quality," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(2), pages 77-82.
    2. M. Lichovníková & L. Zeman, 2008. "Effect of housing system on the calcium requirement of laying hens and on eggshell quality," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(4), pages 162-168.
    Full references (including those not matched with items on IDEAS)

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