Publication result detail

Estimation of the effective elastic constants of bone scaffolds fabricated by direct ink writing

SKALKA, P.; SLÁMEČKA, K.; MONTUFAR JIMENEZ, E.; ČELKO, L.

Original Title

Estimation of the effective elastic constants of bone scaffolds fabricated by direct ink writing

English Title

Estimation of the effective elastic constants of bone scaffolds fabricated by direct ink writing

Type

WoS Article

Original Abstract

Direct ink writing is a popular method for fabrication of scaffolds, yet its widespread usage in clinical practice requires guarantee of compatibility of a scaffold with bone tissues. Mechanical compatibility is mandatory to prevent stress shielding and is expressed using the difference between effective elastic constants (EECs) of a scaffold and tissue. In this paper, the solution for EECs of a calcium phosphate scaffold is derived for any combination of input parameters, inclusive of the contact radius at the joints, a feature arising mainly from the rheological properties of the ink. The model was validated by the comparison with data from the literature and those obtained from tests on produced scaffolds and monoliths. The contact radius significantly influences the elastic response and local stresses in the structure. The inverse solution can be used for estimation of bulk properties and is also helpful for the quality assessment of fabrication process.

English abstract

Direct ink writing is a popular method for fabrication of scaffolds, yet its widespread usage in clinical practice requires guarantee of compatibility of a scaffold with bone tissues. Mechanical compatibility is mandatory to prevent stress shielding and is expressed using the difference between effective elastic constants (EECs) of a scaffold and tissue. In this paper, the solution for EECs of a calcium phosphate scaffold is derived for any combination of input parameters, inclusive of the contact radius at the joints, a feature arising mainly from the rheological properties of the ink. The model was validated by the comparison with data from the literature and those obtained from tests on produced scaffolds and monoliths. The contact radius significantly influences the elastic response and local stresses in the structure. The inverse solution can be used for estimation of bulk properties and is also helpful for the quality assessment of fabrication process.

Keywords

Bone scaffold; Direct ink writing; Bioceramics; Effective elastic constants; Finite element modelling

Key words in English

Bone scaffold; Direct ink writing; Bioceramics; Effective elastic constants; Finite element modelling

Authors

SKALKA, P.; SLÁMEČKA, K.; MONTUFAR JIMENEZ, E.; ČELKO, L.

RIV year

2019

Released

01.04.2019

Publisher

Elsevier Ltd.

Location

Velká Británie

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Volume

39

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1586

Pages to

1594

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0955221918307398?via%3Dihub

Full text in the Digital Library

http://hdl.handle.net/11012/244133

BibTex

@article{BUT153381,
  author="Petr {Skalka} and Karel {Slámečka} and Edgar Benjamin {Montufar Jimenez} and Ladislav {Čelko}",
  title="Estimation of the effective elastic constants of bone scaffolds fabricated by direct ink writing",
  journal="Journal of the European Ceramic Society",
  year="2019",
  volume="39",
  number="4",
  pages="1586--1594",
  doi="10.1016/j.jeurceramsoc.2018.12.024",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221918307398?via%3Dihub"
}

Documents

2019-ART-02--JCS-PREPRINT-Estimation of the effective eleatic constants of bone scaffolds-skal-slam-mon-cel