Abstract
In this study, we investigated the effect of the indenter geometry on the crack characteristics by indentation cracking test and FEA. We conducted various cohesive finite element simulations based on the findings of Lee et al. (2012), who examined the effect of cohesive model parameters on crack size and formulated conditions for crack initiation and propagation. First, we verified the FE model through comparisons with experimental results that were obtained from Berkovich and Vickers indentations. We observed whether nonsymmetrical cracks formed beneath the surface during Berkovich indentation via FEA. Finally, we examined the relation between the crack size and the number of cracks. Based on this relation and the effect of the indenter angle on the crack size, we can predict from the crack size obtained with an indenter of one shape (such as Berkovich or Vickers) the crack size for an indenter of different shape.
| Original language | English |
|---|---|
| Pages (from-to) | 1453-1463 |
| Number of pages | 11 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, A |
| Volume | 37 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2013 |
Keywords
- Cohesive zone model
- Indentation cracking test
- Indenter geometry
- Number of cracks