Structural optimisation for medical implants through additive manufacturing

Al-Tamimi, Abdulsalam Abdulaziz; Almeida, Henrique A.; Bartolo, Paulo Jorge Da Silva

doi:10.1007/s40964-020-00109-7

Cited by 17 publications

(9 citation statements)

References 90 publications

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“…The constant-spaced mesh infills were replaced by gradient infills using this technique. The 3D-printed objects possessed remarkable mechanical properties and a reduction in print time was achieved [ 21 , 22 , 23 ]. Optimal selection of the infill structures was carried out for fusion deposition modeling of PLA materials.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Tensile Properties of Different Infill Pattern Structures of 3D-Printed PLA Polymers: Analysis and Validation Using Finite Element Analysis in ANSYS

Ganeshkumar¹,

Kumar

Magarajan

et al. 2022

Materials

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The advancement of 3D-printing technology has ushered in a new era in the production of machine components, building materials, prototypes, and so on. In 3D-printing techniques, the infill reduces the amount of material used, thereby reducing the printing time and sustaining the aesthetics of the products. Infill patterns play a significant role in the property of the material. In this research, the mechanical properties of specimens are investigated for gyroid, rhombile, circular, truncated octahedron, and honeycomb infill structures (hexagonal). Additionally, the tensile properties of PLA 3D-printed objects concerning their infill pattern are demonstrated. The specimens were prepared with various infill patterns to determine the tensile properties. The fracture of the specimen was simulated and the maximum yield strengths for different infill structures and infill densities were determined. The results show the hexagonal pattern of infill holds remarkable mechanical properties compared with the other infill structures. Through the variation of infill density, the desired tensile strength of PLA can be obtained based on the applications and the optimal weight of the printed parts.

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Section: Introductionmentioning

confidence: 99%

Investigation of Tensile Properties of Different Infill Pattern Structures of 3D-Printed PLA Polymers: Analysis and Validation Using Finite Element Analysis in ANSYS

Ganeshkumar¹,

Kumar

Magarajan

et al. 2022

Materials

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“…Computational models have been extensively used for the optimization of scaffold topology and architecture [108][109][110][111] as well as bioreactor-based processes 106,107 , reviewed extensively in [112][113][114][115][116] , as these have been proposed to be key components for the engineering of clinicallyrelevant tissue engineered implants. Similarly, computational models are often used to optimize the design of TERM components and processes such as biomaterials [117][118][119] , microfluidic devices 120,121 .…”

Section: Computational Models Have Informed and Optimized Experimenta...mentioning

confidence: 99%

Implementing Computational Modeling in Tissue Engineering: Where Disciplines Meet

Post

Loerakker

Merks

et al. 2022

Tissue Engineering Part A

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“…There are various computer simulations for the AM processes-particularly on the different manufacturing stages. These include simulations for (i) part design (38)(39)(40)(41)(42) , (ii) determining the placement of multiple parts in the building space (i.e., build envelope), and (iii) the design of supports (43) . There are also simulations for (iv) the analysis of residual strain caused by thermal stress (44) , (v) the feeding of raw materials such as wire and powder, (vi) the process of melting and fusing the powder using LBs (45) , and electron beams (EBs) (46)(47)(48) , and (vii) microstructure formation through crystal growth and phase transformation during solidification and subsequent cooling processes (28,(48)(49)(50)(51) (52) .…”

Section: Computer Simulations Of the Pbf Processmentioning

confidence: 99%

Digital Twin Science of Metal Powder Bed Fusion Additive Manufacturing: A Selective Review of Simulations for Integrated Computational Materials Engineering and Science

Okugawa

2022

ISIJ Int.

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A digital twin (DT) is a cyberspace replica of a system, such as manufacturing equipment. A DT consists of statistical models and computer simulations of physical phenomena occurring in the system. The modeling is adjusted to the system based on signals from sensors attached to the system and their temporal changes. In general, a DT is utilized to (i) predict phenomena occurring in the system, (ii) optimize control parameters, and (iii) estimate part replacement schedules. We propose to use a DT to elucidate the unique solidification phenomena occurring in a type of metal 3D printing (i.e., additive manufacturing: AM) process. Thus, we propose that applications of DT that obtain scientific data be referred to as "digital twin science (DTS)." This paper first reviews the fundamental of the AM process, particularly powder bed fusion (PBF) and relevant computer simulations, and then studies on computer simulations conducted to elucidate the relationship between the extreme conditions characteristic of the PBF process and solidification microstructures. The findings achieved by the DTS approach indicate that the combination of experimental and simulation data aid the future development of techniques to obtain required microstructures exhibiting desired properties.

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Structural optimisation for medical implants through additive manufacturing

Cited by 17 publications

References 90 publications

Investigation of Tensile Properties of Different Infill Pattern Structures of 3D-Printed PLA Polymers: Analysis and Validation Using Finite Element Analysis in ANSYS

Investigation of Tensile Properties of Different Infill Pattern Structures of 3D-Printed PLA Polymers: Analysis and Validation Using Finite Element Analysis in ANSYS

Implementing Computational Modeling in Tissue Engineering: Where Disciplines Meet

Digital Twin Science of Metal Powder Bed Fusion Additive Manufacturing: A Selective Review of Simulations for Integrated Computational Materials Engineering and Science

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