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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1993, Vol. 14 ›› Issue (3): 188-192.

• 论文 • Previous Articles     Next Articles

CRACK PROPAGATION AND LIFE PREDICTION UNDER CORROSION FATIGUE

Wang Rong, Lou Ming-xiu, Zheng Xiu-lin   

  1. Faculty 401 of Northwestern Polytechnical University, Xi'an, 710072
  • Received:1992-07-16 Revised:1992-09-05 Online:1993-03-25 Published:1993-03-25

Abstract: A study on the prediction of corrosion fatigue life has been carried out by applying the crack propagation rate formula for fatigue to corrosion fatigue. It results in that the crack propagation rate, (da / dN)CF, has a linear relationship with (ΔK - ΔKthCF) on double-Log plots. The concept of critical loading frequency,fc, has been put forward. When Loading frequency f≥fc, the frequency has no effect on (da / dN)CF. When f

Key words: corrosion fatigue, crack propagation, life prediction