Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
권호 표지
DOI QR코드

DOI QR Code

Crack Growth Behavior by Fatigue Load under Mixed Mode(I+II)

혼합모드(I+II)에서 피로 하중에 의한 균열진전 거동

  • 공병채 (금오공과대학교 대학원 지능기계공학과) ;
  • 최성대 (금오공과대학교 지능기계공학과)
  • Received : 2011.10.24
  • Accepted : 2011.11.18
  • Published : 2012.04.15
Download PDF
⟨ Previous Next ⟩

Abstract

This study looked for Mode status of each for fatigue crack growth behavior about the repeat load of mode I and the static load of mode II. The experiment was performed in the state of the repetition frequency of the sine wave 10Hz, the stress ratio 0.1, maximum load 300kg.f, a static load 0, 100, 200, 300kg.f, As the experimental results, in mode of static load, while the load value increases, the crack growth rate is slower as the energy of a crack mixing grows. Mode I and the power mode II get an influence each other in the direction of crack propagation path, but as they eventually get closer to the breaking point of the crack growth, it is dominated by the mode I.

Keywords

References

  1. Choi, S. D., and Choi, M. S ., 2008, "Design of 2 Axis Fatigue Test JIG for the Materialization of Mixed Mode(Mode I+II)," The Korea Society of Industrials Application, Vol. 11, No. 2, pp. 59-64.
  2. Lee, J. M., and Song, S. H., 2004, "Effects of Load Interaction due to Mixed-mode single Overload on Fatiuge Crack Retardation Behavior," The Korean Society of Automotive Engineers, Vol. III, pp. 1498-1503.
  3. Gong, B. C., and Choi, S. D., 2009, "Effect of Stress Ratio on Fatigue Crack Growth in Mixed Mode(I+II)," The Korea Society of Mechanics Engineer, Republic of Korea., Vol. 8, No. 4, pp. 90-96.
  4. Richard, H. A., and Benitz, K., 1983, "A Loading Device for the Criterion of Mixed Mode in Fracture Mechanics," International Journal of Fracture., Vol. 22, No. 2, pp. 55-58. https://doi.org/10.1007/BF00942726
  5. Song, S. H., and Lee, J. M., 2001, "Fatigue Crack Propagaation Behavior in STS304 under Mixed Mode Loading," Transaction of the KSPE, Vol. 18, No. 9, pp. 131-139.
  6. Lee, J. H., and Lee, S. Y., Lee, C. H., Kim, Y. G., Lim, C. Y., Lee, C. G., and Gwon, Y. S., 2007, "A Study on the Fatigue Crack Growth Under Variable Loading of Titanium Alloy," J. Korea Society of Industrial Application, Vol. 10, No. 4, pp. 201-206.
  7. Richard, H. A., 1986, "Some Theoretical and Experimental Aspects of Mixed Mode Fracture," Advances Fracture Research, Vol. 5, pp. 3337-3344.
  8. Jeong, E. H., and Hur, B. S., 2000, "Behaviour of Fatigue Crack Propagation under Mixed Mode(I+II) with variation of Angle and Crack Length," Journal of the Korean Society of Machine Tool Engineers, Vol. 9, No. 5, pp. 73-79
  9. Elber, W., 1971, "The Significance of Fatigue Crack Closure in Damage Tolerance in Aircraft Structure," ASTM STP486, pp. 230-242
  10. Hallback, N., and Nilsson., F., 1994, "Mixed-mode I/II Fracture Behavior of an Aluminium Alloy," J. Mech. Phys. Solids., Vol. 42, No. 9, pp. 1345-1374 https://doi.org/10.1016/0022-5096(94)90001-9
  11. Qian, J., and Fatemi, A., 1996, "Mixed Mode Fatigue Crack Growth A Literature Survey," Engineering Fracture Mechanics, Vol. 55, No. 6, pp. 969-990. https://doi.org/10.1016/S0013-7944(96)00071-9
  12. Stephens, R. I., Chen, D. K., and Hom B. W., 1976, "Fatigue Crack Growth with Negative Stress Ratio Following Single Overloads in 2024-T3 and 7075-T6 Aluminum Alloys," ASTM STP592, pp. 27-40.
  13. Tanaka, K., 1974, "Fatigue Crack Propagation from a Crack Inclined to the Cyclic Tensile Axis," Engineering Fracture Mechanics, Vol. 6, pp. 493-507. https://doi.org/10.1016/0013-7944(74)90007-1