Open AccessStudy on mechanical properties and permeability of elliptical porous scaffold based on the SLM manufactured medical Ti6Al4V
Author(s) -
Chenglong Shi,
Nana Lu,
Yaru Qin,
Mingdi Liu,
Hongxia Li,
Haichao Li
Publication year - 2021
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0247764
Subject(s) - materials science , porosity , scaffold , selective laser melting , cancellous bone , permeability (electromagnetism) , biomedical engineering , scanning electron microscope , composite material , microstructure , compressive strength , biomaterial , nanotechnology , anatomy , chemistry , medicine , biochemistry , membrane
In this paper, we take the elliptical pore structure which is similar to the microstructure of cancellous bone as the research object, four groups of bone scaffolds were designed from the perspective of pore size, porosity and pore distribution. The size of the all scaffolds were uniformly designed as 10 × 10 × 12 mm. Four groups of model samples were prepared by selective laser melting (SLM) and Ti6Al4V materials. The statics performance of the scaffolds was comprehensively evaluated by mechanical compression simulation and mechanical compression test, the manufacturing error of the scaffold samples were evaluated by scanning electron microscope (SEM), and the permeability of the scaffolds were predicted and evaluated by simulation analysis of computational fluid dynamics (CFD). The results show that the different distribution of porosity, pore size and pores of the elliptical scaffold have a certain influence on the mechanical properties and permeability of the scaffold, and the reasonable size and angle distribution of the elliptical pore can match the mechanical properties and permeability of the elliptical pore scaffold with human cancellous bone, which has great potential for research and application in the field of artificial bone scaffold.