Density‐Graded Cellular Aluminum

Dunand, David C.

doi:10.1002/adem.200600074

Cited by 69 publications

(35 citation statements)

References 18 publications

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“…This could lead to the formation of a more stable bone-implant interface with a reduced risk of failure. To date, some investigations on the mechanical [16,17] and thermal [18] properties of stochastic metal foams with structures graded in density or pore size have been reported, but the possibilities for lattices remain unexplored.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Mechanical Characterisation of Titanium Lattices with Graded Porosity

Grunsven

Hernández-Nava

Reilly

et al. 2014

Metals

131

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Electron Beam Melting (EBM) is an AdditiveManufacturing technique which can be used to fabricate complex structures from alloys such as Ti6Al4V, for example for orthopaedic applications. Here we describe the use of EBM for the fabrication of a novel Ti6Al4V structure of a regular diamond lattice incorporating graded porosity, achieved via changes in the strut cross section thickness. Scanning Electron Microscopy and micro computed tomography analysis confirmed that generally EBM reproduced the CAD design of the lattice well, although at smaller strut sizes the fabricated lattice produced thicker struts than the model. Mechanical characterisation of the lattice in uniaxial compression showed that its behaviour under compression along the direction of gradation can be predicted to good accuracy with a simple rule of mixtures approach, knowing the properties and the behaviour of its constituent layers.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Mechanical Characterisation of Titanium Lattices with Graded Porosity

Grunsven

Hernández-Nava

Reilly

et al. 2014

Metals

131

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“…The holding time was determined so as not the temperature of the precursor exceeded the melting point of ADC12 during heating process. The foamed samples were cut by electrodischarge machining, and compression specimens of 15 © 15 © 30 mm 3 for both Type 101% and Type 010% were obtained, as shown in Fig. 1(g).…”

Section: Introductionmentioning

confidence: 99%

Compression Properties of Three-Layered Functionally Graded ADC12 Aluminum Foam Fabricated by Friction Stir Welding

et al. 2013

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Al foam is expected to be used as automotive components because of its light weight as well as its good energy absorption properties. When Al foam is applied to automotive components with complicated shapes, it is desirable to optimally distribute the low-plateau-stress and high-plateau-stress regions in a single Al foam, such as functionally graded (FG) Al foam, to realize components with superior and efficient energy absorption properties. In this study, two types of closed-cell FG Al foam, one composed of larger-smaller-larger three layers with different porosity and pore size to indicate lower-higher-lower plateau stress, and the other composed of smaller-larger-smaller three layers with different porosity and pore size to indicate higher-lower-higher plateau stress, were fabricated by varying the amount of blowing agent added. It was shown that the large-porosity and large-pore-size layers first deformed and, thereafter, the layers with small porosity and pore size deformed, regardless of the location of the large-porosity and large-pore-size layers in the compression test specimens. It was also shown that the first (lower) and second (higher) plateau regions appeared independently, which corresponds to the pore structures of each layer. Therefore, it was demonstrated that the plateau stress of Al foam can be controlled by varying the pore structures.

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“…Initially used for the fabrication ceramic structures only, it is also a versatile technique used for metal foams [17]. The main strength in this manufacturing strategy lies in the possibility to create almost any porosity gradation within the final material.…”

Section: Replica Processing For the Engineering Of Structural Foamsmentioning

confidence: 99%

Morphological and biological characterization of density engineered foams fabricated by ultrasonic sonication

Torres-Sánchez

Corney

2010

J Mater Sci

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Density‐Graded Cellular Aluminum

Cited by 69 publications

References 18 publications

Fabrication and Mechanical Characterisation of Titanium Lattices with Graded Porosity

Fabrication and Mechanical Characterisation of Titanium Lattices with Graded Porosity

Compression Properties of Three-Layered Functionally Graded ADC12 Aluminum Foam Fabricated by Friction Stir Welding

Morphological and biological characterization of density engineered foams fabricated by ultrasonic sonication

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