Journal
ENGINEERING FRACTURE MECHANICS
Volume 256, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2021.107931
Keywords
Crack; Lagrange multipliers; Artificial images; Wedge splitting test; MgO hydration crack network; Computational cost
Categories
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior -Brasil (CAPES) [001]
- PDSE, Brazil [8881.188511/2018-01]
- CAPES (Brazil) [2010/20920-9, 2018/02801-4, 2018/15266-0, 2018/23081-0]
- Sao Paulo Research Foundation (FAPESP)
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A mesh refinement procedure designed for Digital Image Correlation analysis of cracked media is proposed, which can improve accuracy while reducing computational cost. The effectiveness of this method is verified through experiments based on pixel color and crack opening displacement field.
A mesh refinement procedure designed for Digital Image Correlation analyses of cracked media is proposed, based on the pixel color for an artificial case, and the crack opening displacement field for two experimental cases. Although evidence that this procedure can improve every case if tiny elements are sought, it is also shown that the size of matrices and consequently, the computational cost can be reduced while maintaining accuracy, especially for low surface crack densities (e.g., single macrocrack).
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