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Abstract
This work demonstrates that an artificial scaffold structure can be designed to exhibit mechanical properties close to the ones of real bone tissue, thus highly reducing the stress-shielding phenomenon. In this study the scan of lumbar vertebra fragment was reproduced to create a numerical 3D model (this model was called the reference bone sample). New nine 3D scaffold samples were designed and their numerical models were created. Using the finite element analysis, a static compression test was performed to assess the effective Young modulus of each tested sample. Also, two important metrics of each sample were assessed: relative density and surface area. Each new designed 3D scaffold sample was analyzed by considering two types of material properties: metal alloy properties (Ti-6Al-4V) and ABS polymer properties. Numerical analysis results of this study confirm that 3D scaffold used to design a periodic structure, either based on interconnected beams (A, B, C, D, E and F units) or made by removing regular shapes from base solid cubes (G, H, I units), can be refined to obtain mechanical properties similar to the ones of trabecular bone tissue. Experimental validation was performed on seven scaffolds (A, B, C, D, E, F and H units) printed from ABS material without any support materials by using Fused Deposition Modeling (FMD) technology. Results of experimental Young modulus of each printed scaffold are also presented and discussed.
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Authors (3)
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Piotr Borzyszkowski mgr inż.
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Biocybernetics and Biomedical Engineering
no. 41,
pages 667 - 678,
ISSN: 0208-5216 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Wojnicz W., Augustyniak M., Borzyszkowski P.: Mathematical approach to design 3D scaffolds for the 3D printable bone implant// Biocybernetics and Biomedical Engineering -Vol. 41,iss. 2 (2021), s.667-678
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.bbe.2021.05.001
- Verified by:
- Gdańsk University of Technology
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