Original Article
  • A Study on the Coating Cracking on a Substrate in Bending Ⅰ: Theory
  • Sung-Ryong Kim, John A. Nairn
  • 굽힘모드하에서의 코팅크랙킹의 분석Ⅰ : 이론
  • 김성룡(삼양사 중앙연구소 화성소재Gr.), John A. Nairn(Dept. of Materials Science and Engineering)
Abstract
The coating cracking on a substrate system was analyzed using a fracture mechanics approach. Multiple cracking in the bending configuration was analyzed using a variational mechanics approach to fracture mechanics of coating/substrate system. The strain energy release rate on bending geometry developed permits the prediction of crack growth in the coating layer on a substrate. Also, it can be used appropriately to the characterization of multiple cracking of coating. The obtained critical strain energy release rate (in-situ fracture toughness) will be a material property of coating and it will provide a better insight into coating cracking.

The coating cracking on a substrate system was analyzed using a fracture mechanics approach. Multiple cracking in the bending configuration was analyzed using a variational mechanics approach to fracture mechanics of coating/substrate system. The strain energy release rate on bending geometry developed permits the prediction of crack growth in the coating layer on a substrate. Also, it can be used appropriately to the characterization of multiple cracking of coating. The obtained critical strain energy release rate (in-situ fracture toughness) will be a material property of coating and it will provide a better insight into coating cracking.

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This Article

  • 2000; 13(3): 38-47

    Published on Jun 30, 2000

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