Numerical analysis of PLA material orthopaedic plates
Апстракт
Additive Manufacturing (AM) provides many applications in different high-demand engineering fields, i.e., automotive, aeronautical and biomedical fields. For biomedical applications, biodegradable thermoplastics, such as PLA (PolyLactic Acid), are suited for the fabrication of orthopaedic plates. FDM (Fused Deposition Modeling) AM technology provides the creation of structures with different infill percentages, thus enabling drug delivery application. As PLA material degrades, drugs incorporated within the structures are being released into the system- enabling tissue healing. The subject of this paper is the structural integrity assessment of one orthopaedic plate design via numerical analysis. Degradation of material is not the concern of this paper, just the time period when the PLA material holds its primary mechanical values. Fracture mechanics fatigue experiments on Compact Tenson (CT) specimens gives valuable data concerning Paris law constants: C and m. There are three differen...t pairs of these constants, relative to printing layer height: 0.3, 0.2 and 0.1 mm. Fatigue tests have shown that the least result scatter is present in 0.1 mm layer height, thence this set is used primarily for numerical simulation in Ansys software. Pre-crack is applied to the simulation with a 0.5 mm crack depth. Boundary conditions and loading are used as suggested in the previous research. The final result of this research is crack propagation diagrams, relative to a number of cycles- thus showing how long a chosen PLA structure can endure in such an application.
Кључне речи:
PLA / FDM / orthopedic plates / numerical analysisИзвор:
International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor), 2022, 48-Финансирање / пројекти:
- Ministry of Education, Science and Technological Development Republic of Serbia, Agreement No: 451-03-68 / 2022-14 / 200105
Колекције
Институција/група
Inovacioni centarTY - CONF AU - Milovanović, Aleksa AU - Poduška, Jan AU - Travníček, Lukáš AU - Sedmak, Aleksandar AU - Milošević, Miloš PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7369 AB - Additive Manufacturing (AM) provides many applications in different high-demand engineering fields, i.e., automotive, aeronautical and biomedical fields. For biomedical applications, biodegradable thermoplastics, such as PLA (PolyLactic Acid), are suited for the fabrication of orthopaedic plates. FDM (Fused Deposition Modeling) AM technology provides the creation of structures with different infill percentages, thus enabling drug delivery application. As PLA material degrades, drugs incorporated within the structures are being released into the system- enabling tissue healing. The subject of this paper is the structural integrity assessment of one orthopaedic plate design via numerical analysis. Degradation of material is not the concern of this paper, just the time period when the PLA material holds its primary mechanical values. Fracture mechanics fatigue experiments on Compact Tenson (CT) specimens gives valuable data concerning Paris law constants: C and m. There are three different pairs of these constants, relative to printing layer height: 0.3, 0.2 and 0.1 mm. Fatigue tests have shown that the least result scatter is present in 0.1 mm layer height, thence this set is used primarily for numerical simulation in Ansys software. Pre-crack is applied to the simulation with a 0.5 mm crack depth. Boundary conditions and loading are used as suggested in the previous research. The final result of this research is crack propagation diagrams, relative to a number of cycles- thus showing how long a chosen PLA structure can endure in such an application. C3 - International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor) T1 - Numerical analysis of PLA material orthopaedic plates SP - 48 UR - https://hdl.handle.net/21.15107/rcub_machinery_7369 ER -
@conference{ author = "Milovanović, Aleksa and Poduška, Jan and Travníček, Lukáš and Sedmak, Aleksandar and Milošević, Miloš", year = "2022", abstract = "Additive Manufacturing (AM) provides many applications in different high-demand engineering fields, i.e., automotive, aeronautical and biomedical fields. For biomedical applications, biodegradable thermoplastics, such as PLA (PolyLactic Acid), are suited for the fabrication of orthopaedic plates. FDM (Fused Deposition Modeling) AM technology provides the creation of structures with different infill percentages, thus enabling drug delivery application. As PLA material degrades, drugs incorporated within the structures are being released into the system- enabling tissue healing. The subject of this paper is the structural integrity assessment of one orthopaedic plate design via numerical analysis. Degradation of material is not the concern of this paper, just the time period when the PLA material holds its primary mechanical values. Fracture mechanics fatigue experiments on Compact Tenson (CT) specimens gives valuable data concerning Paris law constants: C and m. There are three different pairs of these constants, relative to printing layer height: 0.3, 0.2 and 0.1 mm. Fatigue tests have shown that the least result scatter is present in 0.1 mm layer height, thence this set is used primarily for numerical simulation in Ansys software. Pre-crack is applied to the simulation with a 0.5 mm crack depth. Boundary conditions and loading are used as suggested in the previous research. The final result of this research is crack propagation diagrams, relative to a number of cycles- thus showing how long a chosen PLA structure can endure in such an application.", journal = "International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor)", title = "Numerical analysis of PLA material orthopaedic plates", pages = "48", url = "https://hdl.handle.net/21.15107/rcub_machinery_7369" }
Milovanović, A., Poduška, J., Travníček, L., Sedmak, A.,& Milošević, M.. (2022). Numerical analysis of PLA material orthopaedic plates. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor), 48. https://hdl.handle.net/21.15107/rcub_machinery_7369
Milovanović A, Poduška J, Travníček L, Sedmak A, Milošević M. Numerical analysis of PLA material orthopaedic plates. in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor). 2022;:48. https://hdl.handle.net/21.15107/rcub_machinery_7369 .
Milovanović, Aleksa, Poduška, Jan, Travníček, Lukáš, Sedmak, Aleksandar, Milošević, Miloš, "Numerical analysis of PLA material orthopaedic plates" in International conference of experimental and numerical investigations and new technologies (2022 ; Zlatibor) (2022):48, https://hdl.handle.net/21.15107/rcub_machinery_7369 .