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

  • 제27권10호
  • /
  • Pages.1695-1702
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  • 2003
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Fatigue Crack Initiation around a Hole under Out-of-phase Biaxial Loading

  • 허용학 (한국표준과학연구원) ;
  • 박휘립 (한국표준과학연구원 환경안전연구센터) ;
  • 김동진 (한국표준과학연구원 환경안전연구센터)
  • 발행 : 2003.10.01
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초록

Fatigue crack initiation around a hole subjected to biaxial fatigue loads with a phase difference was investigated. Axial and torsional biaxial fatigue loads with different phase differences and biaxiality of 1/√3 were applied to thin-walled tubular specimens. Five phase differences of 0, 45, 90, 145 and 180 degrees were selected. Directions of the fatigue crack initiation around the hole were found to approach to the circumferential direction of the specimen with increment of the phase difference for fatigue tests with phase differences less than 90$^{\circ}$. Whereas directions for tests with phase differences greater than 90$^{\circ}$ got away from the circumferential direction and those were symmetric to the directions for tests with phase difference less than 90. . Furthermore, it was shown that the fatigue initiation life decreased with increment of phase difference for fatigue tests with phase differences less than 90$^{\circ}$, but it increased for tests with phase difference greater than 90$^{\circ}$. The crack initiation direction can be successfully explained by using the direction of the maximum tangential stress range obtained around the hole and at far-field.

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참고문헌

  1. Wu, H.C., and Yang, C.C., 1987, 'On the Influence of Strain-Path in Multiaxial Fatigue Failure,' J. Engng Mater. Tech., 109, pp. 107-113 https://doi.org/10.1115/1.3225948
  2. Socie, D.F. and Shield, T.W., 1984, 'Mean Stress Effects in Biaxial Fatigue of Inconel 718,' J. Engng Mater. Tech., 106, pp. 227-232 https://doi.org/10.1115/1.3225707
  3. Ogata, T., Nitta, A. and Blass, 1993, 'Propagation Behavior of Small Cracks in 304 Stainless Steel under Biaxial Low-Cycle Fatigue at Elevated Temperature,' ASTM STP 1191, pp. 313-325
  4. Berard, J.Y., McDowell, D.L., and Antolovich, S.D., 1993, 'Damage Observation of a Low-Carbon Steel under Tension-Torsion Low-Cycle Fatigue,' ASTM STP 1191, pp. 326-344
  5. Zhang, W. and Akid, R., 1997, 'Effect of Biaxial Mean Stress on Cyclic Stress-Strain Response and Behavior of Short Fatigue Cracks in a High Strength Spring Steel,' Fatigue Fract. Master. Struct., 20, pp. 167-177 https://doi.org/10.1111/j.1460-2695.1997.tb00276.x
  6. Socie, D., 1987, 'Multiaxial fatigue damage models,' ASME J. of Engng. Mater. and Tech., Vol. 109, pp. 293-298 https://doi.org/10.1115/1.3225980
  7. Nishihara, T. and Kawamoto, 1945, 'The strenght of metals under combined alternating bending and torsion with phase difference,' M., memoirs, college of Engineering, Kyoto University, Vol. 11, pp. 145-129
  8. Little, R.E., 1969, 'A note on the shear stress criterion for fatigue failure under combined stress,' Aeronautical Qunarterly, Vol. 20, pp. 57-60 https://doi.org/10.1017/S0001925900004868
  9. Kanazawa, K., Miller, K.J. and Brown, M.W., 1977, 'Low-cycle Fatigue Under Out-of-Phase Loading Conditions,' Transactions, ASME, series H., Vol. 99, pp. 222-228
  10. Huh, Y.-H., Park, P., Kwon, I.B. and Kim, J.Y., 2000, 'Behavior of Fatigue Crack Initiation and Propagation under Cyclic Tensile and Torsional Loading with Superimposed Static Biaxial Load,' Transactions of the KSME, A,' Vol. 21, pp. 1446-1455
  11. Kalluri, S. and Bonacuse, P.J., 1993, 'In-Phase and out-of-Phase Axial-Torsional Fatigue Behaviour of Haynes 188 Superalloy at $760^{\circ}C$,' ASTM STP 1191, pp. 133-150