Porous scaffold design by solid T-splines and triply periodic minimal surfaces

Feng, Jiawei; Fu, Jianzhong; Shang, Ce; Lin, Zhiwei; Li, Bin

doi:10.1016/j.cma.2018.03.007

Cited by 98 publications

(33 citation statements)

References 36 publications

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“…Afshar et al [135] studied the compression characteristics of several radial gradient minimal surface structures (I-WP, P, and D) using experiments and finite element simulations. Furthermore, Feng et al [136] used solid T-splines to achieve a more complex gradient design, which effectively confirms the advantages of gradient minimal surface structure in the implants.…”

Section: Gradient Structure Designmentioning

confidence: 86%

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

Bai

Cheng

Chen

et al. 2019

Metals

114

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Metals have been used for orthopedic implants for a long time due to their excellent mechanical properties. With the rapid development of additive manufacturing (AM) technology, studying customized implants with complex microstructures for patients has become a trend of various bone defect repair. A superior customized implant should have good biocompatibility and mechanical properties matching the defect bone. To meet the performance requirements of implants, this paper introduces the biomedical metallic materials currently applied to orthopedic implants from the design to manufacture, elaborates the structure design and surface modification of the orthopedic implant. By selecting the appropriate implant material and processing method, optimizing the implant structure and modifying the surface can ensure the performance requirements of the implant. Finally, this paper discusses the future development trend of the orthopedic implant.

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Section: Gradient Structure Designmentioning

confidence: 86%

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

Bai

Cheng

Chen

et al. 2019

Metals

114

View full text Add to dashboard Cite

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“…presented a different approach to generating TPMS porous scaffolds based on T-spline [29]. More recently, Chen et al attempted to map regular TPMS into parameterized hexahedral mesh using the Laplace's equation [30].…”

Section: Tpms Surface Typementioning

confidence: 99%

“…As mentioned in Section 2, TPMS couldn't produce a porous structure fitting any irregular complex shape unless some mapping techniques, such as the distance field [31], T-spline [29], or hexahedral parameterization [30], is integrated. Unlike TPMS, a significant advantage of the proposed tetrahedral implicit surface method is that it can generate surfaces with same morphological features inside the tetrahedron of any shape.…”

Section: Continuity Analysis Of Tetrahedral Implicit Surfacementioning

confidence: 99%

Tetrahedron-Based Porous Scaffold Design for 3D Printing

Guo

Liu

2019

Designs

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Tissue repairing has been the ultimate goal of surgery, especially with the emergence of reconstructive medicine. A large amount of research devoted to exploring innovative porous scaffold designs, including homogeneous and inhomogeneous ones, have been presented in the literature. The triply periodic minimal surface has been a versatile source of biomorphic structure design due to its smooth surface and high interconnectivity. Nonetheless, many 3D models are often rendered in the form of triangular meshes for its efficiency and convenience. The requirement of regular hexahedral meshes then becomes one of limitations of the triply periodic minimal surface method. In this paper, we make a successful attempt to generate microscopic pore structures using tetrahedral implicit surfaces. To replace the conventional Cartesian coordinates, a new coordinates system is built based on the perpendicular distances between a point and the tetrahedral faces to capture the periodicity of a tetrahedral implicit surface. Similarly to the triply periodic minimal surface, a variety of tetrahedral implicit surfaces, including P-, D-, and G-surfaces are defined by combinations of trigonometric functions. We further compare triply periodic minimal surfaces with tetrahedral implicit surfaces in terms of shape, porosity, and mean curvature to discuss the similarities and differences of the two surfaces. An example of femur scaffold construction is provided to demonstrate the detailed process of modeling porous architectures using the tetrahedral implicit surface.

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“…1). We can build upon advances in AM application to other disciplines such as bone reconstruction of graded porosity [19]- [21], in particular, to study bones at an architectural level in order to establish hierarchically and topologically different design principles [22], [23]. This research provides a spatial organization system of indexable units with differentiated performance, boundary and neighboring conditions of manufacture through continuous deposition maintaining geometrical continuity.…”

Section: Fabricationmentioning

confidence: 99%

A Multi-resolution Design Methodology Based on Discrete Models

Guevara

Borunda

Krishnamurti

2019

Communications in Computer and Information Science

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The use of programming languages in design opens up unexplored and previously unworkable territories, mainly, in conventional architectural practice. In the 1990s, languages of continuity, smoothness and seamlessness dominated the architectural inquiry with the CNC milling machine as its manufacturing tool. Today's computational design and fabrication technology look at languages of synthesis of fragments or particles, with the 3D printer as its fabrication archetype. Fundamental to this idea is the concept of resolutionthe amount of information stored at any localized area. Construction of a shape is then based on multiple areas of resolution. This paper explores a novel design methodology that takes this concept of resolutions on discrete elements as a design driver for architectural practice. This research has been tested primarily through additive manufacturing techniques.

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Porous scaffold design by solid T-splines and triply periodic minimal surfaces

Cited by 98 publications

References 36 publications

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

Tetrahedron-Based Porous Scaffold Design for 3D Printing

A Multi-resolution Design Methodology Based on Discrete Models

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