Compression deformation behavior of Ti–6Al–4V alloy with cellular structures fabricated by electron beam melting

Cheng, Xiaoying; Li, Shujun; Murr, L. E.; Zhang, Zhenbo; Hao, Yulin; Yang, Rui; Medina, Francisco; Wicker, Ryan B.

doi:10.1016/j.jmbbm.2012.10.005

Cited by 277 publications

(117 citation statements)

References 29 publications

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“…The results from their experiments, as well as the results from this work, are displayed in Figure 10. The results from Cheng et al [22] and Murr et al [21] slightly vary from those of Gibson and Ashby [20], where Cheng et al [22] found a dependency for the elastic Young's modulus:…”

Section: Resultsmentioning

confidence: 77%

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

et al. 2016

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Abstract:The compression behavior of different 316L steel cellular dodecahedron structures with different density values were studied. The 316L steel structures produced using the selective laser melting process has four different geometries: single unit cells with and without the addition of base plates beneath and on top, and sandwich structures with multiple unit cells with different unit cell sizes. The relation between the relative compressive strength and the relative density was compared using different Gibson-Ashby models and with other published reports. The different aspects of the deformation and the mechanical properties were evaluated and the deformation at distinct loading levels was recorded. Finite element method (FEM) simulations were carried out with the defined structures and the mechanical testing results were compared. The calculated theory, simulation estimation, and the observed experimental results are in good agreement.

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Section: Resultsmentioning

confidence: 77%

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

et al. 2016

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“…It was noticed that the thinner the wall, the faster the cooling rate, and the finer the grain structure. Cheng et al [56] studied the microstructure of lattice structures and concluded from their experimental work that, as the strut thickness decreases, the hardness increases. Dimensional characterization is related to the evaluation of the strut size, pore size, and pore shape.…”

Section: Characterizationmentioning

confidence: 99%

“…One technique used to assess the mechanical properties of lattice structures is to perform a static compression test for the printed samples. The difference in mechanical properties between a stochastic foam and a non-stochastic lattice structures was evaluated by Cheng et al [56]. The non-stochastic lattice was found to have higher specific strength than that of the foam specimens.…”

Section: Characterizationmentioning

confidence: 99%

Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review

Mahmoud

Elbestawi

2017

JMMP

174

103

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A major advantage of additive manufacturing (AM) technologies is the ability to print customized products, which makes these technologies well suited for the orthopedic implants industry. Another advantage is the design freedom provided by AM technologies to enhance the performance of orthopedic implants. This paper presents a state-of-the-art overview of the use of AM technologies to produce orthopedic implants from lattice structures and functionally graded materials. It discusses how both techniques can improve the implants' performance significantly, from a mechanical and biological point of view. The characterization of lattice structures and the most recent finite element analysis models are explored. Additionally, recent case studies that use functionally graded materials in biomedical implants are surveyed. Finally, this paper reviews the challenges faced by these two applications and suggests future research directions required to improve their use in orthopedic implants.

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“…Other AM methods have previously used designed porous structure made in a CAD file to build scaffolds (Bose et al, 1999;Hollander et al, 2006;Ryan et al, 2008;Cheng et al, 2012;de Peppo et al, 2012). This was considered before building the samples for this study.…”

Section: Designing Parameters For Porous Structurementioning

confidence: 99%

“…LENS™ can be used to make porous structure by designing porosity as well as controlling process parameters. In the past, direct metal laser sintering (Khaing et al, 2001;Traini et al, 2008), direct laser forming (Hollander et al, 2006;Harrysson et al, 2008), select laser melting/select laser sintering (Vamsi Krishna et al, 2008;Yadroitsev et al, 2009), electron beam melting (Heinl et al, 2007;Parthasarathy et al, 2010;Cheng et al, 2012;de Peppo et al, 2012), multistage lost wax investment casting (Ryan et al, 2008), and 3D fiber depositing system (Li et al, 2006(Li et al, , 2007 have been used to make porous Ti6Al4V components. All these methods have their advantages and disadvantages when compared to each other.…”

mentioning

confidence: 99%

Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

Gualtieri

Bandyopadhyay

2016

Front. Mech. Eng.

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In many applications, porous metal structures are necessary for proper and optimal function. Yet, these structures can be difficult to build. It is especially difficult if the pore size desired is very fine or on the microscale. For this reason, additive manufacturing processes have been looked at to build these structures. In this study, Laser Engineering Net Shaping (LENS™) processing was experimented with processing interconnected microporous structures. Using Ti6Al4V and only changing processing parameters, porous structures were created having porosity ranging from 21.5 to 15.4%. The microstructure proved to be that of traditional laser processed Ti6Al4V parts. Compression test of these samples showed that the ultimate compressive strength varied from 645 to 556 MPa. Overall, LENS™ proved to be a viable method to make unique interconnected microporous structures that could be easily added to any build without having to change the design.

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Compression deformation behavior of Ti–6Al–4V alloy with cellular structures fabricated by electron beam melting

Cited by 277 publications

References 29 publications

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review

Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

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