Paper Title:
Research of Herringbone Structure of Fragum Unedo Shell
  Abstract

The microstructure of a Fragum unedo shell is observed with a scanning electronic microscope (SEM). It shows that the shell is a kind of bio-ceramic composite consisting of aragonite and collagen protein layers. The observation also shows that the aragonite layers consist of thin and long aragonite sheets. A kind of particular herringbone structure of the aragonite sheets is found. In the structure, the aragonite sheets in an arbitrary aragonite layer make a crossed angle against that in its neighboring aragonite layers. Based on the SEM observation the comparative experiments in the maximum pull-out forces of both the herringbone and conventional 0°-structures are conducted. It shows that the maximum pull-out force of the herringbone structure is markedly larger than that of the 0°-structure, and the larger the crossed angle is, the more the maximum pull-out force of the herringbone structure will increase compared with that of the 0°-structure.

  Info
Periodical
Key Engineering Materials (Volumes 330-332)
Main Theme
Edited by
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
Pages
1273-1276
DOI
10.4028/www.scientific.net/KEM.330-332.1273
Citation
B. Chen, X. H. Peng, X. Y. Wu, "Research of Herringbone Structure of Fragum Unedo Shell", Key Engineering Materials, Vols. 330-332, pp. 1273-1276, 2007
Online since
February 2007
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Price
$32.00
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