Non-stochastic Ti-6Al-4V foam structures with negative Poisson's ratio

被引：85

作者：

Yang, Li ^{[2
]}

Cormier, Denis ^{[1
]}

West, Harvey ^{[2
]}

Harrysson, Ola ^{[2
]}

Knowlson, Kyle ^{[2
]}

机构：

[1] Rochester Inst Technol, Dept Ind Syst Engn, Rochester, NY 14623 USA

[2] N Carolina State Univ, Edward P Fitts Dept Ind & Syst Engn, Raleigh, NC 27695 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 558卷

关键词：

Cellular materials; Porous materials; Titanium alloys; Failure; ALUMINUM FOAM; BEHAVIOR; HONEYCOMBS; COLLAPSE; DESIGN; PANELS;

D O I：

10.1016/j.msea.2012.08.053

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper details the design, fabrication, and testing of non-stochastic auxetic lattice lattice structures. All Ti-6Al-4V samples were created via the Electron Beam Melting (EBM) additive manufacturing process. It was found that the Poisson's ratio values significantly influence the mechanical properties of the structures. The bending properties of the auxetic samples were significantly higher than those of currently commercialized metal foams. The compressive strength was moderately higher than available metal foams. These results suggest that metallic auxetic structures have considerable promise for use in a variety of applications in which tradeoffs between mass and mechanical properties are crucial. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：579 / 585

页数：7

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