Development of Dense and Cellular Solids in Crcomo Alloy for Orthopaedic Applications

Rivera, Sergio; Panera, María; Miranda, D.; Varela, F.J. Belzunce

doi:10.1016/j.proeng.2011.04.494

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…Rivera et al [13] investigated the mechanical properties of an open cellular CoCrMo structure with a pore size of 0.5 mm, which would facilitate bone ingrowth into an acetabular cup. A cellular structure was proposed which had similar mechanical properties to commercially available products that are manufactured using alternative alloys.…”

Section: Additive Layer Manufacturing (Alm) Processes Such As Selectimentioning

confidence: 99%

An investigation into the flexural characteristics of functionally graded cobalt chrome femoral stems manufactured using selective laser melting

2014

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Section: Additive Layer Manufacturing (Alm) Processes Such As Selectimentioning

confidence: 99%

An investigation into the flexural characteristics of functionally graded cobalt chrome femoral stems manufactured using selective laser melting

2014

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“…Furthermore, the properties of the fabricated scaffolds can be directly controlled by the geometrical shape and the composition of different parameter sets [31,32]. However, the material used [22,[33][34][35][36][37], the variation in geometry [38,39] as well as the additive manufacturing technique (EBM-electron beam melting or SLM-selective laser melting), all have an important impact on the properties of a scaffold.…”

Section: Introductionmentioning

confidence: 99%

Specific Yielding of Selective Laser-Melted Ti6Al4V Open-Porous Scaffolds as a Function of Unit Cell Design and Dimensions

Weißmann

Wieding

Hansmann

et al. 2016

Metals

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Bone loss in the near-vicinity of implants can be a consequence of stress shielding due to stiffness mismatch. This can be avoided by reducing implant stiffness, i.e., by implementing an open-porous structure. Three open-porous designs were therefore investigated (cubic, pyramidal and a twisted design). Scaffolds were fabricated by a selective laser-melting (SLM) process and material properties were determined by conducting uniaxial compression testing. The calculated elastic modulus values for the scaffolds varied between 3.4 and 26.3 GP and the scaffold porosities between 43% and 80%. A proportional linear correlation was found between the elastic modulus and the geometrical parameters, between the elastic modulus and the compressive strengths, as well as between the strut width-to-diameter ratio (a/d) and elastic modulus. Furthermore, we found a power-law relationship between porosity and the modulus of elasticity that characterizes specific yielding. With respect to scaffold porosity, the description of specific yielding behaviour offers a simple way to characterize the mechanical properties of open-porous structures and helps generate scaffolds with properties specific to their intended application. A direct comparison with human bone parameters is also possible. We generated scaffolds with mechanical properties sufficiently close to that of human cortical bone.

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“…Different authors fabricated biomedical devices with these processes with titanium alloys [7,8,9,10,11,12,13] and also with the above mentioned biomedical cobalt-based alloy [14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

CoCrMo cellular structures made by Electron Beam Melting studied by local tomography and finite element modelling

Petit

Maire

Meille

et al. 2016

Materials Characterization

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Development of Dense and Cellular Solids in Crcomo Alloy for Orthopaedic Applications

Cited by 9 publications

References 10 publications

An investigation into the flexural characteristics of functionally graded cobalt chrome femoral stems manufactured using selective laser melting

An investigation into the flexural characteristics of functionally graded cobalt chrome femoral stems manufactured using selective laser melting

Specific Yielding of Selective Laser-Melted Ti6Al4V Open-Porous Scaffolds as a Function of Unit Cell Design and Dimensions

CoCrMo cellular structures made by Electron Beam Melting studied by local tomography and finite element modelling

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