Publication detail

Factors governing the dimensional accuracy and fracture modes under compression of regular and shifted orthogonal scaffolds

MONTUFAR JIMENEZ, E. SLÁMEČKA, K. CASAS LUNA, M. SKALKA, P. RAMIREZ-CEDILLO, E. ZBONČÁK, M. KAISER, J. ČELKO, L.

Original Title

Factors governing the dimensional accuracy and fracture modes under compression of regular and shifted orthogonal scaffolds

Type

journal article in Web of Science

Language

English

Original Abstract

Direct ink writing allows controlling the structure of tissue engineering scaffolds. The aim of this work was to study the effects of the in silico pattern design on the dimensional accuracy of tricalcium phosphate scaffolds and of the loading direction on the compressive strength and fracture modes. Regular and shifted scaffolds showed anisotropic shrinkage during drying and isotropic shrinkage during sintering. Shifted layers induced bending stresses when compressed longitudinally, resulting in lower compressive strength. The transverse Young's modulus and compressive strength were higher than the longitudinal ones for both regular and shifted structures. Strand deflections were more pronounced in shifted structures. Finite element modelling suggested that such deflections considerably increased the effective transverse modulus of the shifted scaffolds, thus increasing the related compressive strength. In conclusion, shifted scaffolds performed similarly to regular ones in the transverse direction but were less mechanically reliable under the longitudinal direction.

Keywords

Direct ink writing; Scaffold design; Tricalcium phosphate; Compression; Fracture mode

Authors

MONTUFAR JIMENEZ, E.; SLÁMEČKA, K.; CASAS LUNA, M.; SKALKA, P.; RAMIREZ-CEDILLO, E.; ZBONČÁK, M.; KAISER, J.; ČELKO, L.

Released

2. 4. 2020

Publisher

Elsevier

Location

OXFORD

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

40

Number

14

State

United Kingdom of Great Britain and Northern Ireland

Pages from

4923

Pages to

4931

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0955221920302260

Full text in the Digital Library

http://hdl.handle.net/11012/201793

BibTex

@article{BUT165171,
  author="Edgar Benjamin {Montufar Jimenez} and Karel {Slámečka} and Mariano {Casas Luna} and Petr {Skalka} and Erick {Ramirez-Cedillo} and Marek {Zbončák} and Jozef {Kaiser} and Ladislav {Čelko}",
  title="Factors governing the dimensional accuracy and fracture modes under compression of regular and shifted orthogonal scaffolds",
  journal="Journal of the European Ceramic Society",
  year="2020",
  volume="40",
  number="14",
  pages="4923--4931",
  doi="10.1016/j.jeurceramsoc.2020.03.045",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221920302260"
}