2024-T42铝合金疲劳裂纹扩展曲线的拟合方法研究

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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2003, Vol. 24 ›› Issue (2): 144-146.

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Curve Fitting Study on 2024-T42 Aluminium-Alloy Fatigue Crack G rowth

TIAN Xiu-yun, SUN Zhi-qiang

College of Mechanical & Electrical Engineering; CAIC; Tianjin 300 300; China

Received:2002-04-04 Revised:2002-06-06 Online:2003-04-25 Published:2003-04-25

Abstract

Abstract: A curve fitting method on the fatigue crack growth is developed. Adopting this method,this paper provides the fatigue crack growth data curve fitting analysis of 2024-T42 aluminum alloy CCT specimens.By comparingthe experimental result with calculated results on fatigue crack growth life,it is proved that this new curve fitting hashigher precision. Analyzing experimental and calculated results, this paper provides the fatigue crack growth rateconstants c, n.

Key words: fatigue crack growth rate, fatigue crack growth life, curve fitting, aluminum alloy

CLC Number:

V215.5

TIAN Xiu-yun;SUN Zhi-qiang. Curve Fitting Study on 2024-T42 Aluminium-Alloy Fatigue Crack G rowth[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2003, 24(2): 144-146.

E-mail：hkxb@buaa.edu.cn

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Curve Fitting Study on 2024-T42 Aluminium-Alloy Fatigue Crack G rowth

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