Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Stress Distribution and Crack Initiation Behavior due to the Defect Locations in Monolithic Aluminum and Al/Glass Fiber Laminates

단일재 알루미늄과 알루미늄/유리섬유 적층재의 결함 위치에 따른 응력분포 및 균열발생 거동

  • 송삼홍 (고려대학교 기계공학과) ;
  • 김종성 (현대자동차 남양연구소) ;
  • 오동준 (안동대학교 기계교육과) ;
  • 윤광준 (건국대학교 항공우주공학과) ;
  • 김철웅 (건국대학교 인공근육연구센터)
  • Published : 2005.02.01
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Abstract

Material flaws in the from of pre-existing defects can severely affect the crack initiation. Stress distribution and crack initiation life of engineering materials such as monolithic aluminum alloy and Al/Glass fiber laminate may be different according to the defect location. The aim of this study is to evaluate effects of relative location of defects around the circular hole in monolithic aluminum and Al/Glass fiber laminates under cyclic bending moment. Stress distribution and crack initiation behavior near a circular hole are considered. Results of Finite Element (FE) model indicated the features of different stress field due to the relative defects positions. Especially, the defects positions at ${\theta}=0^{\circ}\;and\;{\theta}=30^{\circ}$ was strongly effective in stress concentration factor ($K_t$) and crack initiation behavior.

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References

  1. Lawcock, G., Ye, L. and Mai, Y. W., 1997, 'Progressive Damage and Residual Strength of a Carbon Fiber Reinforced Metal Laminate,' Journal of Composite Materials, Vol. 31, No.8, pp. 762-787 https://doi.org/10.1177/002199839703100802
  2. Guo, Y. and Wu, X., 1999, 'Bridging Stress Distribution in Center-Cracked Fiber Reinforced Metal Laminates : Modeling and Experiment,' Engineering Fracture Mechanics, Vol. 63, pp.147-163 https://doi.org/10.1016/S0013-7944(99)00018-1
  3. Takamatsu, T., Matsumura, T., Ogura, N., Shimokawa, T. and Kakuta, Y., 1999, 'Fatigue Crack Growth Properties of a GLARE3-5/4 ?Fiber/Metal Laminate,' Engineering Fracture Mechanics, Vol. 63, pp. 253-272 https://doi.org/10.1016/S0013-7944(99)00021-1
  4. Marissen, R., 1988, 'Fatigue Crack Growth in ARALL. A Hybrid Aluminum-Ararnid Composite Material, Crack Growth Mechanics and Quantitative Predictions of the Crack Growth Rate,' Report LR-574, Aerospace Eng., Delft Univ. of Tech., the Netherlands
  5. Song Sam-Hong and Kim Cheol-Woong, 2001, 'The Mixture Ratio Effect of Epoxy Resin, Curing Agent and Accelerator on the Fatigue Behavior of FRMLs,' Transactions of the KSME A, Vol. 25, No.4, pp. 592-601
  6. Song Sam-Hong and Kim Cheol-Woong, 2001, 'The Delamination and Fatigue Crack Propagation Behavior in A15052/AFRP Laminates Under Cyclic Bending Moment,' Transactions of the KSME, A, Vol. 25, No.8, pp. 1277 -1286
  7. Song Sam-Hong and Kim Cheol-Woong, 2003, 'Fatigue Crack and Delamination Behavior in the Composite Material Containing a Saw-cut and Circular Hole (1) - Aramid Fiber Reinforced Metal Laminates-,' Transactions of the KSME A, Vol. 27, No.1, pp. 58-65 https://doi.org/10.3795/KSME-A.2003.27.1.058
  8. Murakami, Y. and Nemat-Nasser, S., 1982, 'Interaction Dissimilar Semi-Elliptical Surface Flaws under Tension and Bending,' Engineering Fracture Mechanics, Vol. 16, pp. 373-386 https://doi.org/10.1016/0013-7944(82)90115-1
  9. Gunnink, J. W., 1990, 'Aerospace ARALL the Advancement in Aircraft Materials,' 35th International SAMPE Symposium, pp. 1708-1721
  10. Peterson, R. E., 1974, Stress Concentration Factors, John Wiley & Sons, Inc., pp. 1-19
  11. Lawcock, G., Ye, L. and Mai, Y. W., 1995, 'Novel Fiber Reinforced Metal Laminates for Aerospace Applications - A Review, Part I Background & General Mechanical Properties,' SAMPE Journal, Vol. 31, No.1, pp. 23-31
  12. Manson, S. S., 1953, 'Behavior of Materials under Conditions of Thermal Stress,' Heat Transfer Symposium, Univ. of Michigan, Engineering Research Institute, pp. 9-75
  13. Braglia, B. L. and Hertzberg, R. W., 1979, 'Crack Initiation in a High Strength Low-Alloy Steel,' Fracture Mechanics, ASTM STP 677
  14. Song Sam-Hong and Kim Cheol-Woong, 2003, 'The Analysis of Fatigue Behavior Using the Delamination Growth Rate $(dA_D/da)$ and Fiber Bridging Effect Factor $(F_{BE})$ in AUGFRP Laminates,' Transactions of the KSME A, Vol. 27, No.2, pp. 317-326. https://doi.org/10.3795/KSME-A.2003.27.2.317
  15. Parti, O. and Schijve, J., 1993, 'Multiple-site damage in 2024- T3 Alloy Sheet,' International Journal of Fatigue, Vol. 15, No.4, pp. 293-299 https://doi.org/10.1016/0142-1123(93)90378-4