Parametric compensation scheme for increasing the geometrical accuracy of lattice structures in medical implants produced by powder bed fusion

Max Horn; Lukas Koch; Mario Schafnitzel; Matthias Schmitt; Georg Schlick; Johannes Schilp; Gunther Reinhart

doi:10.1016/j.procir.2021.11.141

Parametric compensation scheme for increasing the geometrical accuracy of lattice structures in medical implants produced by powder bed fusion

Max Horn, Lukas Koch, Mario Schafnitzel, Matthias Schmitt, Georg Schlick, Johannes Schilp, Gunther Reinhart

Chair of Sustainable Production

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

Powder bed fusion of metals by laser beam enables the production of porous lattice structures that facilitate bone ingrowth and the vascularization of medical implants. Comprehensive implementation is currently limited by the medium reproducibility of porous structures with insufficient dimensional accuracy. Therefore strategies for minimizing geometrical mismatch and roughness are investigated by way of experiment. A parametric compensation scheme that takes into account the melt pool depth of the struts' downskins in reducing the geometric mismatch between as-designed and as-built lattice structures is proposed. Build angles of 10° with respect to the platform were created without support structures.

Original language	English
Pages (from-to)	839-844
Number of pages	6
Journal	Procedia CIRP
Volume	104
DOIs	https://doi.org/10.1016/j.procir.2021.11.141
State	Published - 2021
Event	54th CIRP Conference on Manufacturing Ssystems, CMS 2021 - Patras, Greece Duration: 22 Sep 2021 → 24 Sep 2021

Keywords

316L
Additive manufacturing
laser beam
lattice structures
medical implants
overhang angle
power bed fusion
stainless steel
thin struts

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10.1016/j.procir.2021.11.141

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title = "Parametric compensation scheme for increasing the geometrical accuracy of lattice structures in medical implants produced by powder bed fusion",

abstract = "Powder bed fusion of metals by laser beam enables the production of porous lattice structures that facilitate bone ingrowth and the vascularization of medical implants. Comprehensive implementation is currently limited by the medium reproducibility of porous structures with insufficient dimensional accuracy. Therefore strategies for minimizing geometrical mismatch and roughness are investigated by way of experiment. A parametric compensation scheme that takes into account the melt pool depth of the struts' downskins in reducing the geometric mismatch between as-designed and as-built lattice structures is proposed. Build angles of 10° with respect to the platform were created without support structures.",

keywords = "316L, Additive manufacturing, laser beam, lattice structures, medical implants, overhang angle, power bed fusion, stainless steel, thin struts",

author = "Max Horn and Lukas Koch and Mario Schafnitzel and Matthias Schmitt and Georg Schlick and Johannes Schilp and Gunther Reinhart",

year = "2021",

doi = "10.1016/j.procir.2021.11.141",

language = "English",

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pages = "839--844",

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T1 - Parametric compensation scheme for increasing the geometrical accuracy of lattice structures in medical implants produced by powder bed fusion

AU - Horn, Max

AU - Koch, Lukas

AU - Schafnitzel, Mario

AU - Schmitt, Matthias

AU - Schlick, Georg

AU - Schilp, Johannes

AU - Reinhart, Gunther

PY - 2021

Y1 - 2021

N2 - Powder bed fusion of metals by laser beam enables the production of porous lattice structures that facilitate bone ingrowth and the vascularization of medical implants. Comprehensive implementation is currently limited by the medium reproducibility of porous structures with insufficient dimensional accuracy. Therefore strategies for minimizing geometrical mismatch and roughness are investigated by way of experiment. A parametric compensation scheme that takes into account the melt pool depth of the struts' downskins in reducing the geometric mismatch between as-designed and as-built lattice structures is proposed. Build angles of 10° with respect to the platform were created without support structures.

AB - Powder bed fusion of metals by laser beam enables the production of porous lattice structures that facilitate bone ingrowth and the vascularization of medical implants. Comprehensive implementation is currently limited by the medium reproducibility of porous structures with insufficient dimensional accuracy. Therefore strategies for minimizing geometrical mismatch and roughness are investigated by way of experiment. A parametric compensation scheme that takes into account the melt pool depth of the struts' downskins in reducing the geometric mismatch between as-designed and as-built lattice structures is proposed. Build angles of 10° with respect to the platform were created without support structures.

KW - 316L

KW - Additive manufacturing

KW - laser beam

KW - lattice structures

KW - medical implants

KW - overhang angle

KW - power bed fusion

KW - stainless steel

KW - thin struts

UR - http://www.scopus.com/inward/record.url?scp=85121603386&partnerID=8YFLogxK

U2 - 10.1016/j.procir.2021.11.141

DO - 10.1016/j.procir.2021.11.141

M3 - Conference article

AN - SCOPUS:85121603386

SN - 2212-8271

VL - 104

SP - 839

EP - 844

JO - Procedia CIRP

JF - Procedia CIRP

T2 - 54th CIRP Conference on Manufacturing Ssystems, CMS 2021

Y2 - 22 September 2021 through 24 September 2021

ER -

Parametric compensation scheme for increasing the geometrical accuracy of lattice structures in medical implants produced by powder bed fusion

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Keywords

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