Publication detail

Determination of Mechanical and Fracture Properties of Silicon Single Crystal from Indentation Experiments and Finite Element Modelling

SKALKA, P. KOTOUL, M.

Original Title

Determination of Mechanical and Fracture Properties of Silicon Single Crystal from Indentation Experiments and Finite Element Modelling

Type

journal article in Web of Science

Language

English

Original Abstract

The paper aims to use experimental micro-indentation data, FE simulations with cohesive zone modelling, and an optimisation procedure to determine the cohesive energy density of silicon single crystals. While previous studies available in the literature, which use cohesive zone finite element techniques for simulation of indentation cracks in brittle solids, tried to improve methods for the evaluation of material toughness from the indentation load, crack size, hardness, elastic constants, and indenter geometry, this study focuses on the evaluation of the cohesive energy density 2Γ from which the material toughness can be easily determined using the well-known Griffith-Irwin formula. There is no need to control the premise of the linear fracture mechanics that the cohesive zone is much shorter than the crack length. Hence, the developed approach is suitable also for short cracks for which the linear fracture mechanics premise is violated

Keywords

micro-indentation; mechanical and fracture properties identification; finite element analysis; optimisation analysis

Authors

SKALKA, P.; KOTOUL, M.

Released

14. 11. 2021

Publisher

MDPI

ISBN

1996-1944

Periodical

Materials

Year of study

14

Number

22

State

Swiss Confederation

Pages from

1

Pages to

15

Pages count

15

URL

https://www.mdpi.com/1996-1944/14/22/6864

Full text in the Digital Library

http://hdl.handle.net/11012/202281

BibTex

@article{BUT173211,
  author="Petr {Skalka} and Michal {Kotoul}",
  title="Determination of Mechanical and Fracture Properties of Silicon Single Crystal from Indentation Experiments and Finite Element Modelling",
  journal="Materials",
  year="2021",
  volume="14",
  number="22",
  pages="1--15",
  doi="10.3390/ma14226864",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/14/22/6864"
}

Documents

materials-14-06864.pdf