Comparative evaluation of printability and compression properties of poly-ether-ether-ketone triply periodic minimal surface scaffolds fabricated by laser powder bed fusion

Wang, Haoze; Chen, Peng; Wu, Hongzhi; Chen, Annan; Wu, Siqi; Su, Jin; Wang, Mingzhe; Feng, Xiaobo; Yang, Cao; Yang, Lei; Yan, Chunze; Shi, Yusheng

doi:10.1016/j.addma.2022.102961

Cited by 20 publications

(27 citation statements)

References 56 publications

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“…Many researchers designed porous scaffolds based on TPMS and analyzed their mechanical properties. From their simulation and test results 33,34 the porous scaffolds designed based on the TPMS method have periodic internal pore structures, although they are not simple uniform cubic pores. When the TPMS scaffold is subjected to force, the stress distribution on the same periodic surface is basically the same, and when the force is large enough, continuous damage surfaces are formed.…”

Section: Damage Analysis Of Heterogeneous Porous Scaffold and Uniform...mentioning

confidence: 99%

Design and mechanical properties analysis of heterogeneous porous scaffolds based on bone slice images

Wang

Chen

Dong

et al. 2022

Numer Methods Biomed Eng

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Bone tissue engineering plays an extremely important role in the clinical treatment of bone defects. Porous scaffold is one of the three essential factors of bone tissue engineering, and its structural design has attracted more and more attention . At present, most of the design methods of porous scaffolds focus on uniform porous scaffolds with periodic and regular pore structures. However, periodic and regular pore structure cannot comprehensively and accurately simulate the microstructures and mechanical properties of natural bone. To address this problem, based on bone slice images and VT (Voronoi‐Tessellation) method, this article proposed a design method of HPS (Heterogeneous Porous Scaffolds) with bionic pore structure and controllable porosity. The FDM (fused deposition modeling) printing technology was applied to fabricate HPS with different porosities, and the mechanical properties of the HPS were analyzed by experiments. The research results illustrate that the HPS constructed by the design method proposed in this article have good controllability, and their internal pore structures are highly similar to those of natural bone, which have biomimetic characteristics. The mechanical property analysis illustrate that the stiffness and compressive strength of HPS decrease with the increase of porosity, in addition, the heterogeneous pore distribution makes HPS have the characteristics of non‐concentrated and discontinuous damage distribution. This study provides a new idea for the design of porous scaffolds and a theoretical basis for the bionic design of HPS.

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Section: Damage Analysis Of Heterogeneous Porous Scaffold and Uniform...mentioning

confidence: 99%

Design and mechanical properties analysis of heterogeneous porous scaffolds based on bone slice images

Wang

Chen

Dong

et al. 2022

Numer Methods Biomed Eng

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“…L-PBF is a laser AM technology based on the layered construction of complex customized implants using highintensity laser beams. Therefore, it has been extensively investigated for the fabrication of bone implants using polymers FIGURE 1 YS (MPa) and elastic modulus (GPa) of Mg and its alloys are more similar to natural bone than those of other biodegradable metallic materials (such as Fe and Zn) and Polyetheretherketone (PEEK) (Chen et al, 2022;Wang et al, 2022).…”

Section: L-pbf As the Mainstream Manufacturing Technology For Am Mg A...mentioning

confidence: 99%

“…L-PBF-formed MMCs have been investigated as an effective method to improve biodegradation ability. Tao et al (2020) revealed that doping graphene oxide in ZK30 powder could effectively reduce the content of the MgZn 2 precipitated phase in the L-PBF deposited state, thus enhancing the biodegradation resistance.…”

Section: Degradation Behavior and Typical Strategies To Enhance The C...mentioning

confidence: 99%

Comprehensive review of additively manufactured biodegradable magnesium implants for repairing bone defects from biomechanical and biodegradable perspectives

et al. 2022

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Bone defect repair is a complicated clinical problem, particularly when the defect is relatively large and the bone is unable to repair itself. Magnesium and its alloys have been introduced as versatile biomaterials to repair bone defects because of their excellent biocompatibility, osteoconductivity, bone-mimicking biomechanical features, and non-toxic and biodegradable properties. Therefore, magnesium alloys have become a popular research topic in the field of implants to treat critical bone defects. This review explores the popular Mg alloy research topics in the field of bone defects. Bibliometric analyses demonstrate that the degradation control and mechanical properties of Mg alloys are the main research focus for the treatment of bone defects. Furthermore, the additive manufacturing (AM) of Mg alloys is a promising approach for treating bone defects using implants with customized structures and functions. This work reviews the state of research on AM-Mg alloys and the current challenges in the field, mainly from the two aspects of controlling the degradation rate and the fabrication of excellent mechanical properties. First, the advantages, current progress, and challenges of the AM of Mg alloys for further application are discussed. The main mechanisms that lead to the rapid degradation of AM-Mg are then highlighted. Next, the typical methods and processing parameters of laser powder bed fusion fabrication on the degradation characteristics of Mg alloys are reviewed. The following section discusses how the above factors affect the mechanical properties of AM-Mg and the recent research progress. Finally, the current status of research on AM-Mg for bone defects is summarized, and some research directions for AM-Mg to drive the application of clinical orthopedic implants are suggested.

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“…Different from the traditional methods, additive manufacturing (AM) technology is based on the theory of material accumulation to build an object via layer‐upon‐layer mode, 12–14 which provides unique advantages for fabricating complex‐shaped ceramic parts 15–17 . In particular, powder bed AM techniques, such as laser powder bed fusion (LPBF) and binder jetting, show high potential for cost‐efficient manufacturing of SiC ceramic specimens.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] However, these methods have severe drawbacks such as the complex manufacturing process and high cost, which are difficult and even sometimes unable to fabricate SiC ceramic lattices with complex shapes. 10,11 Different from the traditional methods, additive manufacturing (AM) technology is based on the theory of material accumulation to build an object via layer-uponlayer mode, [12][13][14] which provides unique advantages for fabricating complex-shaped ceramic parts. [15][16][17] In particular, powder bed AM techniques, such as laser powder bed fusion (LPBF) and binder jetting, show high potential for cost-efficient manufacturing of SiC ceramic specimens.…”

Section: Introductionmentioning

confidence: 99%

Performance optimization of Si/SiC ceramic triply periodic minimal surface structures via laser powder bed fusion

Yang

Chen

et al. 2023

J Am Ceram Soc.

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SiC ceramic lattice structures (CLSs) via additive manufacturing (AM) have been recognized as potential candidates in engineering fields owing to their various merits. Compared with traditional SiC CLSs, SiC triply periodic minimal surface (TPMS) CLSs could possess more outstanding properties, making them more promising for wider applications. Since SiC CLSs are hard to be fabricated through stereolithography technique because of inferior light performance, the LPBF process via selectively sintering is an effective method to prepare near‐net shape SiC TPMS lattices. As the mechanical performances of lattice structures are the foundation for future practical applications, it is of great significance to optimize the preparation process, thus improving the mechanical properties of SiC TPMS structures. In this work, the optimal printing parameters of the LPBF and liquid silicon infiltration process for SiC ceramic TPMS CLSs with three different volume fractions were systematically illustrated and analyzed. The effect of the printing parameters and carbon densities on the fabrication accuracy, microstructure, and mechanical performance of SiC TPMS CLSs were defined. The mechanism of the reactive sintering process for the SiC TPMS lattice structure was revealed. The results reveal that Si/SiC TPMS CLSs with optimum preparation have superior manufacturing accuracy (most less than 6%), relatively high bulk densities (about 2.75g/cm3), low residual Si content (6.01%), and excellent mechanical properties (5.67 MPa, 15.4 MPa, and 44.0 MPa for Si/SiC TPMS CLSs with 25%, 40%, and 55% volume fractions).This article is protected by copyright. All rights reserved

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Comparative evaluation of printability and compression properties of poly-ether-ether-ketone triply periodic minimal surface scaffolds fabricated by laser powder bed fusion

Cited by 20 publications

References 56 publications

Design and mechanical properties analysis of heterogeneous porous scaffolds based on bone slice images

Design and mechanical properties analysis of heterogeneous porous scaffolds based on bone slice images

Comprehensive review of additively manufactured biodegradable magnesium implants for repairing bone defects from biomechanical and biodegradable perspectives

Performance optimization of Si/SiC ceramic triply periodic minimal surface structures via laser powder bed fusion

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