Analysis of Cracking Characteristics with Indenter Geometry Using Cohesive Zone Model

Cohesive Zone Model을 이용한 압입자 형상에 따른 균열특성분석

  • Hyun, Hong Chul (Dept. of Mechanical Engineering, Sogang Univ.) ;
  • Lee, Jin Haeng (Division for Research Reactor, Korea Atomic Energy Research Institute) ;
  • Lee, Hyungyil (Dept. of Mechanical Engineering, Sogang Univ.) ;
  • Kim, Dae Hyun (Graduate School of NID Fusion Technology, Seoul Nat'l Univ. of Science and Technology) ;
  • Hahn, Jun Hee (Korea Research Institute of Standards and Science)
  • Received : 2012.12.28
  • Accepted : 2013.10.04
  • Published : 2013.12.01


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.


Indentation Cracking Test;Cohesive Zone Model;Indenter Geometry;Number of Cracks;FEA


Supported by : 한국연구재단


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