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Study on Fatigue Analysis of DCB Specimen Bonded

접착제로 접합된 DCB 시험편의 피로 해석에 관한 연구

  • Choi, Hae-Kyu (Division of Mechanical Engineering, Graduate School, Kongju University) ;
  • Hong, Soon-Jik (Division of Advanced Materials Engineering, Kongju University) ;
  • Kim, Sei-Hwan (Division of Mechanical & Automotive Engineering, Kongju University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju University)
  • 최해규 (공주대학교 대학원 기계공학과) ;
  • 홍순직 (공주대학교 신소재공학부) ;
  • 김세환 (공주대학교 기계자동차공학부) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2012.04.25
  • Accepted : 2012.07.12
  • Published : 2012.07.31

Abstract

In this study, the fracture behaviour of DCB(double cantilever beam) specimen with aluminum foam composite materials is analyzed by simulation. By comparing the analysis results with two models of 25 mm and 40 mm, the model with thickness of 25 mm is weaker than 40 mm at fatigue life and damage. Two models are unfavorable at 'SAE Transmission' in case of nonuniform fatigue load and rainflow matrices are weakest at 'SAE Bracket history'. In damage matrices, the model with 25 mm of thickness is weaker than the model with 40 mm of thickness but the model with 40 mm of thickness relative damage possibility is higher than in case of 25 mm. As two models are safest at 'SAE Transmission', the relative damage becomes the lowest value from 1.1 to 1.8 %. The mechanical property can be investigated by applying these analyses results with the real composite structure bonded with adhesive and analyzing fracture behaviour.

Keywords

Double cantilever beam(DCB);Thickness of model;Fatigue life and damage;Rainflow matrix;Damage matrix;Fracture behaviour

Acknowledgement

Supported by : 한국연구재단

References

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Cited by

  1. A Fracture Study on the Bonded DCB Specimen of the Mode III Type with Aluminum Foam vol.28, pp.4, 2015, https://doi.org/10.7234/composres.2015.28.4.191