The mechanical design of nacre

  title={The mechanical design of nacre},
  author={A. P. Jackson and Julian F. V. Vincent and Roger Michael Turner},
  journal={Proceedings of the Royal Society of London. Series B. Biological Sciences},
  pages={415 - 440}
Mother-of-pearl (nacre) is a platelet-reinforced composite, highly filled with calcium carbonate (aragonite). The Young modulus, determined from beams of a span-to-depth ratio of no less than 15 (a necessary precaution), is of the order of 70 GPa (dry) and 60 GPa (wet), much higher than previously recorded values. These values can be derived from ‘shear-lag’ models developed for platey composites, suggesting that nacre is a near-ideal material. The tensile strength of nacre is of the order of… 

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