Details
| Original language | English |
|---|---|
| Pages (from-to) | 427-435 |
| Number of pages | 9 |
| Journal | Progress in Additive Manufacturing |
| Volume | 8 |
| Issue number | 3 |
| Early online date | 28 Sept 2022 |
| Publication status | Published - Jun 2023 |
| Externally published | Yes |
Abstract
Artificial or human test bones are used for the biomechanical testing of implants. Human test bones are rare and not always available. These must, therefore, be substituted with artificial test bones. However, current artificial test bones are only available with specific characteristics (e.g., age groups or disease characteristics). Additionally, their mechanical properties are only comparable to a limited extent to those of a human bone. This paper presents a methodology for designing additively manufactured artificial test bones for biomechanical testing that replicate the mechanical behavior of a human bone. Topology optimization methods are used to generate the artificial test bone's internal structure. The geometric model is based on a computed tomography dataset of a human bone. The input data can be manipulated in advance to reproduce defects or disease patterns. The bone was fixed at the distal diaphysis and loaded with different biomechanical forces for topology optimization. Boundary conditions due to possible additive manufacturing processes were incorporated into the optimization to ensure manufacturability. The optimization result is compared with experimental data from a human bone. A bone-like internal structure and increased compliance of the topology-optimized test bone model compared to the commercial model were observed.
Keywords
- Additive manufacturing, Artificial test bone, Internal structure, Patient specific, Topology optimization
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
Sustainable Development Goals
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In: Progress in Additive Manufacturing, Vol. 8, No. 3, 06.2023, p. 427-435.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Inner design of artificial test bones for biomechanical investigations using topology optimization
AU - Fritz, Christian
AU - Fischer, Lukas
AU - Wund, Emmy
AU - Zaeh, Michael Friedrich
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2023/6
Y1 - 2023/6
N2 - Artificial or human test bones are used for the biomechanical testing of implants. Human test bones are rare and not always available. These must, therefore, be substituted with artificial test bones. However, current artificial test bones are only available with specific characteristics (e.g., age groups or disease characteristics). Additionally, their mechanical properties are only comparable to a limited extent to those of a human bone. This paper presents a methodology for designing additively manufactured artificial test bones for biomechanical testing that replicate the mechanical behavior of a human bone. Topology optimization methods are used to generate the artificial test bone's internal structure. The geometric model is based on a computed tomography dataset of a human bone. The input data can be manipulated in advance to reproduce defects or disease patterns. The bone was fixed at the distal diaphysis and loaded with different biomechanical forces for topology optimization. Boundary conditions due to possible additive manufacturing processes were incorporated into the optimization to ensure manufacturability. The optimization result is compared with experimental data from a human bone. A bone-like internal structure and increased compliance of the topology-optimized test bone model compared to the commercial model were observed.
AB - Artificial or human test bones are used for the biomechanical testing of implants. Human test bones are rare and not always available. These must, therefore, be substituted with artificial test bones. However, current artificial test bones are only available with specific characteristics (e.g., age groups or disease characteristics). Additionally, their mechanical properties are only comparable to a limited extent to those of a human bone. This paper presents a methodology for designing additively manufactured artificial test bones for biomechanical testing that replicate the mechanical behavior of a human bone. Topology optimization methods are used to generate the artificial test bone's internal structure. The geometric model is based on a computed tomography dataset of a human bone. The input data can be manipulated in advance to reproduce defects or disease patterns. The bone was fixed at the distal diaphysis and loaded with different biomechanical forces for topology optimization. Boundary conditions due to possible additive manufacturing processes were incorporated into the optimization to ensure manufacturability. The optimization result is compared with experimental data from a human bone. A bone-like internal structure and increased compliance of the topology-optimized test bone model compared to the commercial model were observed.
KW - Additive manufacturing
KW - Artificial test bone
KW - Internal structure
KW - Patient specific
KW - Topology optimization
UR - http://www.scopus.com/inward/record.url?scp=85139128959&partnerID=8YFLogxK
U2 - 10.1007/s40964-022-00343-1
DO - 10.1007/s40964-022-00343-1
M3 - Article
AN - SCOPUS:85139128959
VL - 8
SP - 427
EP - 435
JO - Progress in Additive Manufacturing
JF - Progress in Additive Manufacturing
SN - 2363-9512
IS - 3
ER -