K.O. thanks Professor Takashi Kato (the University of Tokyo) for useful comments. Y.H. thanks Dr. Ohtake, Dr. Nishido and Dr. Tsunori (IHI Corporation) for encouragements. This work is supported by a project, Fusion Materials (Area no. 2206), funded by Grant-in-Aid for Scientific Research on Innovative Areas, from MEXT, Japan.
Realistic Numerical Analysis of a Bioinspired Layered Composite with a Crack: Robust Scaling Laws and Crack Arrest†
Version of Record online: 22 MAY 2013
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 15, Issue 6, pages 522–528, June 2013
How to Cite
Hamamoto, Y. and Okumura, K. (2013), Realistic Numerical Analysis of a Bioinspired Layered Composite with a Crack: Robust Scaling Laws and Crack Arrest. Adv. Eng. Mater., 15: 522–528. doi: 10.1002/adem.201300061
- Issue online: 11 JUN 2013
- Version of Record online: 22 MAY 2013
- Manuscript Accepted: 13 MAR 2013
- Manuscript Received: 24 FEB 2013
- Grant-in-Aid for Scientific Research on Innovative Areas, from MEXT, Japan.
Bioinspired by an extremely tough biocomposite, nacre, found inside certain seashells, we perform finite-element calculations of the layered structure in the presence of a crack. Generally, such a crack deprives materials of strength since the stress is highly concentrated at the tips of a crack as demonstrated on the right (color stands for the stress intensity). Our results for the model composite revealed that the crack-tip stress is significantly reduced, following a simple scaling law.