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

  • 제18권5호
  • /
  • Pages.536-543
  • /
  • 2009
  • /
  • 2508-5093(pISSN)
  • /
  • 2508-5107(eISSN)
한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
권호 표지

평균응력이 AZ31 마그네슘합금의 렌덤진전균열크기 확률분포에 미치는 영향

Effect of Mean Stress on Probability Distribution of Random Grown Crack size in Magnesium Alloy AZ31

  • 최선순 (삼육대학교 카메카트로닉스학과) ;
  • 이억섭 (인하대학교 기계공학부)
  • 발행 : 2009.10.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper the mean stress effects on the probability distribution of the random grown crack size at a specified loading cycle are studied through the fatigue crack propagation tests, which are conducted on the specimens of magnesium alloy under four different stress ratios. Through 80 replicates the probability distributions of the grown crack size are obtained. The goodness-of-fit for probability distributions of the random grown crack size are investigated by Anderson-Darling test and the best fit for those probability distributions is found to be a 3-parameter Weibull distribution. The effects of the mean stress on the probability distribution of the random grown crack size are also estimated.

키워드

참고문헌

  1. Tokaji, K., Nakajima, M., and Uematsu, Y., 2009, "Fatigue crack propagation and fracture mechanisms of wrought magnesium alloys in different environments," International Journal of Fatigue, Vol. 31, Issue 7, pp. 1137-1143.
  2. Venkateswaran, P., Ganesh Sundara Raman, S., Pathak, S. D., Miyashita, Y., and Mutoh, Y., 2004, "Fatigue crack growth behaviour of a die-cast magnesium alloy AZ91D," Materials Letters, Vol. 58, pp. 2525-2529.
  3. Xu, D. X., Liu, L., Xu, Y. B., and Han, E. H., 2007, "The fatigue crack propagation behavior of the forged Mg-Zn-Y-Zr alloy," Journal of Alloys and Compounds, Vol. 431, pp. 107-111.
  4. Lee, Y. B. and Oh, B. D., 2005, "Characteristics of fatigue crack propagations with respect to the angles between rolling and tensile loading directions of steel plates," Transactions of KSMTE, Vol. 14, No. 3, pp. 74-80.
  5. Choi, S. S., 2009, "Effect of specimen thickness on probability distribution of fatigue crack propagation behavior in magnesium alloy AZ31," Journal of the KSMTE, Vol. 18, No. 4, pp. 395-400.
  6. Choi, S. S., 2009, "Estimation of probability distribution fit for fatigue crack propagation life of AZ31 magnesium alloy," Transactions of the KSME(A), Vol. 33, No. 8, pp. 707-719.
  7. Choi, S. S., 2009, "Effect of mean stress on probability distribution of fatigue crack propagation behavior in magnesium alloy AZ31," Proceedings of the KOSME Spring Conference 2009, pp. 221-222.
  8. Sivapragash, M., Lakshminarayanan, P. R., and Karthikeyan, R., 2008, "Fatigue life prediction of ZE41A magnesium alloy using Weibull distribution," Materials and Design, Vol. 29, pp. 1549-1553.
  9. Shih, T. S., Liu, W. S., and Chen, Y. J., 2002, "Fatigue of as-extruded AZ61A magnesium alloy," Materials Science & Engineering(A), Vol. 325, pp. 152-162.
  10. ASTM, 2000, Standard Test Method for Measurement of Fatigue Crack Growth Rates, ASTM E647-00, ASTM International, Pennsylvania.
  11. Dodson, B., 2006, The Weibull Analysis Handbook, ASQ Quality Press, Wisconsin, pp. 115-117.