Experimental Mechanics

, Volume 38, Issue 3, pp 161–166 | Cite as

Fatigue crack initaition and propagation from hole defects

  • S. -H. Song
  • J. -S. Bae


The aim of this study is to investigate the interaction of two hole defects affecting fatigue crack initiation life and propagation behavior. The location of two hole defects was characterized by an angle of alignment and the distance between the centers of two hole defects. The fatigue cracking behavior is studies under bending for AI 5086. When defects are located close to each other, the fatigue crack initiation lives are varied with their relative locations. In the experiments, the area of the local plastic stratin strongly played a role in the fatigue crack initiation lives. Therefore, the authors introduce a parameter which contains the plastic deformation are at stress concentrations and proposed a fatigue crack initiation life prediction curve. In addition, the directions and propagation rates of fatigue cracks initiated at two hole defects were studied experimentally.


Fatigue Mechanical Engineer Plastic Deformation Fluid Dynamics Fatigue Crack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Song, S.-H. andKim, J.B., “Analysis of Stress Distribution Around Micro Hole by F.E.M.,”Trans. Korean Soc. Mech. Engineers,18 (3),555–564 (1994).MathSciNetGoogle Scholar
  2. 2.
    Murakami, Y. andNemat-Nasser, S., “Interaction Dissimilkar Semielliptical Surface Flaws Under Tension and Bending,”Eng. Fract. Mech.,16,373–386 (1982).Google Scholar
  3. 3.
    heath, B.J. andGrandt, A.F., Jr., “Stress Intensity Factors for Coalecsing and single Corner Flaws Along a Hole Borie in a Plate,”Eng. Fract. Mech.,19 (4),665–673 (1984).Google Scholar
  4. 4.
    Song, S.-H. and Lee, K.R., “Behavior of Fatigue Cracks from Hole Defects in the Surface of the Steel Plates for Pressure Vessels,” Proc. VII Int. Cong. Exp. Mech., 27–32 (1992).Google Scholar
  5. 5.
    Song, S.-H. and Lee, K.R., “The Analysis of Interaction Effects by FEM and the Effect of Single Overload on Hosrt Crack,” Proc. Conf. Adv. Tech. Exp. Mech. 275–281 (1993).Google Scholar
  6. 6.
    Rubinstein, A.A. andChoi, H.C., “Micro Crack Interaction with Transvnerse Array of Microcracks,”Int. J. Fract.,36,15–26 (1988).Google Scholar
  7. 7.
    Mauge, C. andKachanov, M., “Anisotropic Material and Interaction Arbitrarily Oriented Cracks. Stress Intensity Factors and Crack-microscrack Interactions,”Int. J. Fract. 65,115–139 (1994).Google Scholar
  8. 8.
    Soboyejo, W.O., “On the Prediction of the Fatigue Propagation of Semi-elliptical Defects,”ASTM STP 1122,American Society for Testing and Materials,Philadelphia, PA,435–438 (1992).Google Scholar
  9. 9.
    Forsyth, P.J.E., “A Unified Description of Micro and Macroscopic Fatigue Crack Behavior,” Int. J. Fatigue, 3–14 (1983).Google Scholar
  10. 10.
    NISA Finite Element Package, Engineering Mechanics Research Corporation, Troy, MI.Google Scholar
  11. 11.
    Shin, C.S., Man, K.C., andWang, C.M., “A Practical method to Estimate the Stresses Concentration of Notches,”Fatigue,16,242–256 (1994).Google Scholar
  12. 12.
    Schijve, J., Fraga, W.E., and Hewitt, R.L., “Comparison of an Engineering Estimate with a Numerical Solution for the Stress Concentration Factor of a Hole Near a Circular Edge Notch,” Int. J. Fatigue, 111–118 (1986).Google Scholar
  13. 13.
    Socie, D.F., Dowling, N.E., andKurath, P., “Fatigue Life Estimation of Notched Members,”Fracture Mechanics: Fifteenth Symposium, ASTM STP 833,American Society for Testing and Materials,Philadelphia, PA,284–299 (1984).Google Scholar
  14. 14.
    Bannantine, A. andSocie, D.F., “Multiaxial Fatigue Life Estimation Technique,”ASTM STP 1122,American Society for Testing and Materials,Philadelphia, PA,249–275 (1992).Google Scholar
  15. 15.
    Dowling, N.E., “Fatigue Notches and the Local Strain and Fracture Mechanics Approaches,”Fract. Mech., ASTM STP 677, American Society for Testing and Materials, Philadelphia, PA, 247–273 (1979).Google Scholar
  16. 16.
    Newman, J.C., Jr., “An Elastic-plastic Finite Element Analysis of Crack Initiation, Stable Crack Growth, and Instability,”Fracture Mechanics: Fifteenth symposium, ASTM STP 833,American Society for Testing and Materials,Philadelphia, PA,93–117 (1984).Google Scholar
  17. 17.
    Crews, J.H., Jr., “Crack Initiation at Stress Concentrations as Influenced by Prior Local Plasticity,”Achievement of High Fatigue Resistance in Metals and Alloys, ASTM STP 467, American Society for Testing and Materials, Philadelphia, PA, 37–52 (1970).Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1998

Authors and Affiliations

  • S. -H. Song
    • 1
  • J. -S. Bae
    • 1
  1. 1.Department of Mechanical EngineeringKorea UniversitySeouelKorea

Personalised recommendations