TY - GEN

T1 - Mechanical properties of additively manufactured polymeric implant materials in dependence of microstructure, temperature and strain-rate

AU - Petersmann, Sandra

AU - Spörk, Martin

AU - Van De Steene, Willem

AU - Üçal, Muammer

AU - Wiener, Johannes

AU - Pinter, Gerald Gerhard

AU - Arbeiter, Florian

PY - 2022/4/5

Y1 - 2022/4/5

N2 - Additive manufacturing has established itself in many areas, including medicine,where personalisation is of particular interest. However, fundamental relationshipsbetween the process and the resulting properties still need to be investigated beforeit can become the new state of the art manufacturing process of medical prosthesesor implants. In the field of polymers, material extrusion-based additive manufacturingis particularly widespread. In this process, a thermoplastic filament is melted anddeposited on a build platform forming a component layer by layer. Due to the layerby-layer construction, numerous weld lines and cavities are introduced into thematerial if the process parameters are not optimised. These areas represent defectsand can severely compromise the resulting mechanical properties of themanufactured part. Since the mechanical integrity of implant materials is vital, theidentification of these defects is required. The localisation and qualification of defectscan be used to explain material failure [1] or even predict damage for a specificloading scenario. Moreover, the number of possible loading scenarios for implantmaterials is very high ranging from cyclic loading due to respiration to impact loadingin accidents. Additionally, the behaviour of polymeric materials can significantlydepend on temperature variations. Hence, temperature and strain-rate dependentmaterial data should be used in the design process of a specific implant [1].REFERENCES[1] S. Petersmann, M. Spoerk, W. Van de Steene, M. Üçal. J. Wiener, G. Pinter, F.Arbeiter, Journal of the Mechanical Behavior of Biomedical Materials, 104,103611, 2020.

AB - Additive manufacturing has established itself in many areas, including medicine,where personalisation is of particular interest. However, fundamental relationshipsbetween the process and the resulting properties still need to be investigated beforeit can become the new state of the art manufacturing process of medical prosthesesor implants. In the field of polymers, material extrusion-based additive manufacturingis particularly widespread. In this process, a thermoplastic filament is melted anddeposited on a build platform forming a component layer by layer. Due to the layerby-layer construction, numerous weld lines and cavities are introduced into thematerial if the process parameters are not optimised. These areas represent defectsand can severely compromise the resulting mechanical properties of themanufactured part. Since the mechanical integrity of implant materials is vital, theidentification of these defects is required. The localisation and qualification of defectscan be used to explain material failure [1] or even predict damage for a specificloading scenario. Moreover, the number of possible loading scenarios for implantmaterials is very high ranging from cyclic loading due to respiration to impact loadingin accidents. Additionally, the behaviour of polymeric materials can significantlydepend on temperature variations. Hence, temperature and strain-rate dependentmaterial data should be used in the design process of a specific implant [1].REFERENCES[1] S. Petersmann, M. Spoerk, W. Van de Steene, M. Üçal. J. Wiener, G. Pinter, F.Arbeiter, Journal of the Mechanical Behavior of Biomedical Materials, 104,103611, 2020.

M3 - Conference contribution

BT - Abstract Book of 18th European Mechanics of Materials Conference

T2 - 18th European Mechanics of Materials Conference

Y2 - 4 April 2022 through 6 April 2022

ER -