STL-free design and manufacturing paradigm for high-precision powder bed fusion

Ding, Jialin; Zou, Qiang; Qu, Shuo; Bartolo, Paulo Jorge Da Silva; Song, Xu; Wang, Charlie C. L.

doi:10.1016/j.cirp.2021.03.012

Cited by 28 publications

(7 citation statements)

References 11 publications

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“…Yet, the proposed methods are implemented based on the network TPMS rather than the sheet TPMS. Ding et al made use of the Boolean operations to acquire multiscale TPMS porous structures [20] as shown in figure 6(c). The pores of the next level are iteratively subtracted from the solid parts of the current level.…”

Section: Multiscale Tpms Porous Structuresmentioning

confidence: 99%

“…Moreover, complex calculations such as Boolean, modulation, and convolution can also be implemented based on TPMS functions [12]. In order to mimic natural porous structures and to fulfill demands of diverse applications, graded TPMS [13,14], heterogeneous TPMS [9,[15][16][17][18], multiscale TPMS [19][20][21][22], and TPMS with complex external shapes [9,23,24] were designed. Then, complex TPMS structures can be precisely fabricated via different additive manufacturing technologies [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Feng

Yao

et al. 2022

Int. J. Extrem. Manuf.

276

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Inspired by natural porous architectures, numerous attempts have been made to generate porous structures. Owing to the smooth surfaces, highly interconnected porous architectures, and mathematical controllable geometry features, triply periodic minimal surface (TPMS) is emerging as an outstanding solution to constructing porous structures in recent years. However, many advantages of TPMS are not fully utilized in current research. Critical problems of the process from design, manufacturing to applications need further systematic and integrated discussions. In this work, a comprehensive overview of TPMS porous structures is provided. In order to generate the digital models of TPMS, the geometry design algorithms and performance control strategies are introduced according to diverse requirements. Based on that, precise additive manufacturing methods are summarized for fabricating physical TPMS products. Furthermore, actual multidisciplinary applications are presented to clarify the advantages and further potential of TPMS porous structures. Eventually, the existing problems and further research outlooks are discussed.

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Section: Multiscale Tpms Porous Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Feng

Yao

et al. 2022

Int. J. Extrem. Manuf.

276

View full text Add to dashboard Cite

show abstract

“…The shell thickness was set as 65, 130, and 260 µm, respectively, and the unit cell is 2 mm. The G-TPMS lattice was defined by the following function [42]:…”

Section: Effect Of Process Parameters On Thin-wall Structure Fabricationmentioning

confidence: 99%

Superelastic NiTi Functional Components by High-Precision Laser Powder Bed Fusion Process: The Critical Roles of Energy Density and Minimal Feature Size

Wang

Ding

et al. 2023

Micromachines

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Additive manufacturing (AM) was recently developed for building intricate devices in many fields. Especially for laser powder bed fusion (LPBF), its high-precision manufacturing capability and adjustable process parameters are involved in tailoring the performance of functional components. NiTi is well-known as smart material utilized widely in biomedical fields thanks to its unique superelastic and shape-memory performance. However, the properties of NiTi are extremely sensitive to material microstructure, which is mainly determined by process parameters in LPBF. In this work, we choose a unique NiTi intricate component: a robotic cannula tip, in which material superelasticity is a crucial requirement as the optimal object. First, the process window was confirmed by printing thin walls and bulk structures. Then, for optimizing parameters precisely, a Gyroid-type sheet triply periodic minimal-surface (G-TPMS) structure was proposed as the standard test sample. Finally, we verified that when the wall thickness of the G-TPMS structure is smaller than 130 μm, the optimal energy density changes from 167 J/m3 to 140 J/m3 owing to the lower cooling rate of thinner walls. To sum up, this work puts forward a novel process optimization methodology and provides the processing guidelines for intricate NiTi components by LPBF.

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“…Morphologically, TPMS architectures can be categorized into two main types, namely minimal surface network solids and minimal surface sheet solids (Figure 3a) [54]. Al-Ketan et al [55] investigated the mechanical properties of a wide range of structures, including strut-based, skeletal-TPMS, and sheet-TPMS porous structures.…”

Section: Sheet-based Structuresmentioning

confidence: 99%

Improving the Mechanical Properties of Additively Manufactured Micro-Architected Biodegradable Metals

Shi

Jahr

et al. 2021

JOM

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STL-free design and manufacturing paradigm for high-precision powder bed fusion

Cited by 28 publications

References 11 publications

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Superelastic NiTi Functional Components by High-Precision Laser Powder Bed Fusion Process: The Critical Roles of Energy Density and Minimal Feature Size

Improving the Mechanical Properties of Additively Manufactured Micro-Architected Biodegradable Metals

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