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8 Nov 2010

Volume 97, Issue 19, Articles (19xxxx)

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Appl. Phys. Lett. 97, 193101 (2010); http://dx.doi.org/10.1063/1.3504664 (3 pages)

Qingzhen Hao, Yong Zeng, Xiande Wang, Yanhui Zhao, Bei Wang, I-Kao Chiang, Douglas H. Werner, Vincent Crespi, and Tony Jun Huang
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Scaling of strength and ductility in bioinspired brick and mortar composites

David V. Wilbrink, Marcel Utz, Robert O. Ritchie, and Matthew R. Begley

Appl. Phys. Lett. 97, 193701 (2010); http://dx.doi.org/10.1063/1.3499294 (3 pages)

Online Publication Date: 11 November 2010

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This paper provides scaling relationships between constituent properties and the uniaxial tensile response of synthetic “brick and mortar” composite materials inspired by nacre. The macroscopic strength and ductility (work of fracture) are predicted in terms of the brick properties (size, strength, and layout) and interface cohesive properties (e.g., maximum shear and normal stresses and separations). The results illustrate the trade-off between increasing strength and decreasing ductility with the increasing aspect ratio of the bricks. The models can be used to identify optimum mortar properties that maximize toughness for a given brick strength.
Show PACS
89.20.Kk Engineering
81.40.Lm Deformation, plasticity, and creep
62.20.fk Ductility, malleability
62.20.F- Deformation and plasticity
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