On the toughness of biocomposites

Authors
de Gennes, PG Okumura, K
Citation
Pg. De Gennes et K. Okumura, On the toughness of biocomposites, CR AC S IV, 1(2), 2000, pp. 257-261
Citations number
5
Categorie Soggetti
Multidisciplinary
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE IV PHYSIQUE ASTROPHYSIQUE
ISSN journal
12962147 → ACNP
Volume
1
Issue
2
Year of publication
2000
Pages
257 - 261
Database
ISI
SICI code
1296-2147(200003)1:2<257:OTTOB>2.0.ZU;2-Z
Abstract
The fracture energy G of nacre (a stacking of aragonite/organic layers) is much larger than the corresponding energy Go for pure aragonite (although t he organic cement thickness do is very small: nanometers). We present here a qualitative explanation for this difference. The basic idea is that a wea k cement reduces drastically the stress concentration near the fracture tip . (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevi er SAS.