Full-Field Strain and Failure Analysis of Titanium Alloy Diamond Lattice

被引:0
|
作者
Distefano, Fabio [1 ]
Rizzo, Daniele [1 ]
Briguglio, Giovanni [1 ]
Crupi, Vincenzo [1 ]
Epasto, Gabriella [1 ]
机构
[1] Univ Messina, Dept Engn, Contrada Dio Vill St Agata, I-98166 Messina, Italy
关键词
lattice structures; titanium alloy; additive manufacturing; mechanical properties; digital image correlation; finite element analysis; DIGITAL IMAGE CORRELATION; MECHANICAL-PROPERTIES; TI-6AL-4V; BEHAVIOR; BONE;
D O I
10.3390/met14070775
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The advancement in additive manufacturing has significantly expanded the use of lattice structures in many engineering fields. Titanium diamond lattice structures, produced by a direct metal laser sintering process, were experimentally investigated. Two cell sizes were selected at five different relative densities. Morphological analysis was conducted by digital microscopy. The compressive tests and digital image correlation technique allowed the evaluation of elastic moduli to be used in the Gibson-Ashby model. Failure mechanisms of the structures have been analysed by digital image correlation, which represents a promising technique for strain evaluation of such structures. A non-linear finite element model of the lattice structures was developed and validated using the experimental data. The analysis of the results highlights the good mechanical properties of the Ti6Al4V alloy lattice structures.
引用
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页数:16
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