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Notch sensitivity of mammalian mineralized tissues in impact

Brear, K., Zioupos, P. and Currey, J.D. (2004) Notch sensitivity of mammalian mineralized tissues in impact. Proceedings of the Royal Society B: Biological Sciences. pp. 517-522. ISSN 1471-2954

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Abstract

The toughness of bone is an important feature in preventing it from fracturing. We consider the notch sensitivity in impact, and the associations between brittleness, notch sensitivity and post-yield energy absorption of mammalian mineralized tissues. Specimens of bone-like tissues covering a wide range of mineralization were broken, either notched or un-notched, in impact. The greater the mineral content, the greater was the notch sensitivity. Also, the more brittle tissues dissipated the least post-yield energy and were the most notch sensitive. It is suggested that since antler bone, the least mineralized of all known mammalian mineralized tissues, seems to be notch insensitive in impact, no adaptive purpose would be served by having mineralized tissues of a lower mineralization than antler. This may explain the lower cut-off in mineralization seen in mammals.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2004 The Royal Society
Keywords: bone, mineral content, toughness, energy absorption, impact strength, notch sensitivity
Academic Units: The University of York > Biology (York)
Depositing User: Repository Assistant
Date Deposited: 14 Jun 2006
Last Modified: 17 Oct 2013 14:27
Published Version: http://dx.doi.org/10.1098/rspb.2003.2634
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1266

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