Fatigue Performance of 3D-Printed Poly-Lactic-Acid Bone Scaffolds with Triply Periodic Minimal Surface and Voronoi Pore Structures

被引:1
作者
Bakhtiari, Hamed [1 ]
Nouri, Alireza [2 ]
Tolouei-Rad, Majid [1 ]
机构
[1] Edith Cowan Univ, Ctr Adv Mat & Mfg CAMM, Sch Engn, Joondalup, WA 6027, Australia
[2] RMIT Univ, Sch Engn, Melbourne, Vic 3001, Australia
关键词
bone scaffold; fatigue; compression; PLA; additive manufacturing; POROUS SCAFFOLDS; BEHAVIOR; DESIGN;
D O I
10.3390/polym16152145
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Bone scaffolds serve a crucial role in tissue engineering, particularly in facilitating bone regeneration where natural repair is insufficient. Despite advancements in the fabrication of polymeric bone scaffolds, the challenge remains to optimize their mechanical resilience. Specifically, research on the fatigue behaviour of polymeric bone scaffolds is scarce. This study investigates the influence of pore architecture on the mechanical performance of poly-lactic-acid (PLA) scaffolds under quasi-static and cyclic compression. PLA scaffolds with a 60% porosity were fabricated using extrusion-based 3D printing in various designs: Gyroid, Lidinoid, Fischer-Koch, IWP, and Voronoi. Results demonstrated that Gyroid scaffolds had the highest compressive strength (6.6 MPa), followed by Lidinoid, Fischer-Koch, IWP, and Voronoi designs. Increased strut thickness was linked to higher compressive strength. However, normalized fatigue resistance showed a different pattern. While scaffolds resisted fatigue cycles at low strain amplitudes, fatigue damage was observed at higher strains. Voronoi structures exhibited the highest normalized fatigue performance, enduring around 58,000 cycles at 85% strain amplitude, followed by Gyroid, Fischer-Koch, Lidinoid, and IWP structures. Enhanced fatigue performance in different topologies correlated with the minimum cross-sectional area of scaffolds. Given the importance of both static and fatigue strength, the Gyroid topology emerges as the superior choice overall.
引用
收藏
页数:15
相关论文
共 57 条
[1]   Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures [J].
Abou-Ali, Aliaa M. ;
Al-Ketan, Oraib ;
Lee, Dong-Wook ;
Rowshan, Reza ;
Abu Al-Rub, Rashid K. .
MATERIALS & DESIGN, 2020, 196
[2]   Functionally graded and multi-morphology sheet TPMS lattices: Design, manufacturing, and mechanical properties [J].
Al-Ketan, Oraib ;
Lee, Dong-Wook ;
Rowshan, Reza ;
Abu Al-Rub, Rashid K. .
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 2020, 102
[3]   Multifunctional Mechanical Metamaterials Based on Triply Periodic Minimal Surface Lattices [J].
Al-Ketan, Oraib ;
Abu Al-Rub, Rashid K. .
ADVANCED ENGINEERING MATERIALS, 2019, 21 (10)
[4]   Design of tissue engineering scaffolds based on hyperbolic surfaces: Structural numerical evaluation [J].
Almeida, Henrique A. ;
Bartolo, Paulo J. .
MEDICAL ENGINEERING & PHYSICS, 2014, 36 (08) :1033-1040
[5]  
[Anonymous], 2016, ASTM D1621-16
[6]  
Attaeyan A, 2024, IRAN J CHEM CHEM ENG, V43, P66
[7]   Impact of 3D printing parameters on static and fatigue properties of polylactic acid (PLA) bone scaffolds [J].
Bakhtiari, Hamed ;
Nouri, Alireza ;
Tolouei-Rad, Majid .
INTERNATIONAL JOURNAL OF FATIGUE, 2024, 186
[8]   Fatigue behaviour of load-bearing polymeric bone scaffolds: A review [J].
Bakhtiari, Hamed ;
Nouri, Alireza ;
Khakbiz, Mehrdad ;
Tolouei-Rad, Majid .
ACTA BIOMATERIALIA, 2023, 172 :16-37
[9]   Influence of Three-Dimensional Printing Parameters on Compressive Properties and Surface Smoothness of Polylactic Acid Specimens [J].
Bakhtiari, Hamed ;
Nikzad, Mostafa ;
Tolouei-Rad, Majid .
POLYMERS, 2023, 15 (18)
[10]   Effect of 3D Printing Parameters on the Fatigue Properties of Parts Manufactured by Fused Filament Fabrication: A Review [J].
Bakhtiari, Hamed ;
Aamir, Muhammad ;
Tolouei-Rad, Majid .
APPLIED SCIENCES-BASEL, 2023, 13 (02)