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A Study on Fatigue Crack Growth Analysis of Inclined Cracked Plate with Composite Patched Repair

경사균열을 갖는 복합재료 보강판의 피로균열 성장에 관한 연구

  • Chung, Ki-Hyun (Dept.of Mechanical Engineering, Graduate School of Sungkyunkwan University) ;
  • Yang, Won-Ho (Dept.of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Cheol
  • 정기현 (성균관대학교 대학원 기계공학부) ;
  • 양원호 (성균관대학교 기계공학부) ;
  • 김철 (성균관대학교 대학원 기계공학부)
  • Published : 2001.12.01

Abstract

Fatigue crack growth behavior of inclined cracked Al 6061-T6 thick aluminum plate(6mm) repaired with the bonded composite patch was studied. A 0°inclined crack bonded reinforced composite patch and 15°, 30°, 45°, 60°inclined crack plates were tested. The effect of patch and inclined angle were studied and compared to each other. Also we investigated to the crack propagation direction and debonding behavior during the fatigue crack growth test. In this paper. a study was con(ducted to get an fatigue life, fatigue crack growth ratio and crack growth direction. Finally, the effectiveness of composite patch on inclined cracked plate was investigated. The results demonstrated thats there was a definite variation in fatigue life and fatigue crack growth behavior depending on the inclined crack angle.

Keywords

Inclined Crack;Stress Intensity Factor;Composite Material;Fatigue Life;Fatigue Crack Growth Rate

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