Compressive behaviour of gyroid lattice structures for human cancellous bone implant applications

被引：122

作者：

Yanez, A. ^{[1
]}

Herrera, A. ^{[3
]}

Martel, O. ^{[1
]}

Monopoli, D. ^{[2
]}

Afonso, H. ^{[2
]}

机构：

[1] Univ Las Palmas Gran Canaria, Dept Mech Engn, Las Palmas Gran Canaria, Las Palmas, Spain

[2] Inst Tecnol Canarias, Dept Mech Engn, Las Palmas Gran Canaria, Spain

[3] Julius Wolff Inst, Berlin, Germany

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2016年 / 68卷

关键词：

Compressive behaviour; Gyroid lattice structures; Specific strength; Titanium alloys; Electron beam melting; BEAM MELTING EBM; POROUS STRUCTURES; MECHANICAL-PROPERTIES; TITANIUM IMPLANTS; ELECTRON; DEFORMATION; FABRICATION; STRENGTH; ALLOY; PARTS;

D O I：

10.1016/j.msec.2016.06.016

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

Electron beam melting (EBM) was used to fabricate porous titanium alloy structures. The elastic modulus of these porous structures was similar to the elastic modulus of the cancellous human bone. Two types of cellular lattice structures were manufactured and tested: gyroids and diamonds. The design of the gyroid structures was determined by the main angle of the struts with respect to the axial direction. Thus, structures with angles of between 19 and 68.5 degrees were manufactured. The aim of the design was to reduce the amount of material needed to fabricate a structure with the desired angles to increase the range of stiffness of the scaffolds. Compression tests were conducted to obtain the elastic modulus and the strength. Both parameters increased as the angle decreased. Finally, the specific strength of the gyroid structures was compared with that of the diamond structures and other types of structures. It is shown that, for angles lower than 35 degrees, the gyroid structures had a high strength to weight ratios. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：445 / 448

页数：4

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