航空学报 > 1995, Vol. 16 Issue (2): 61-65

一种反映腐蚀疲劳裂纹增长的da/dN-(ΔK,f)数学模型

姜建华, 樊尉勋, 黄维扬   

  1. 南京航空航天大学104 教研室, 南京, 210016
  • 收稿日期:1993-12-18 修回日期:1994-04-05 出版日期:1995-04-25 发布日期:1995-04-25

THE MATHEMATICAL MODEL da/dN-(ΔK,f)OF CORROSION FATIGUE CRACK GROWTH

Jiang Jianhua, Fan Weiwun, Huang Weiyang   

  1. Faculty 104,Nanjing University of Aeronautics and Astronautics,Nanjing,210016
  • Received:1993-12-18 Revised:1994-04-05 Online:1995-04-25 Published:1995-04-25

摘要: 分析了加载频率f对腐蚀疲劳裂纹增长的影响,提出了一种计及加载频率f影响的腐蚀疲劳裂纹增长数学模型da/dN-(ΔK,f)。

关键词: 腐蚀疲劳, 钝性, 数学模型

Abstract: A lot of experiments have indicated that the loading frequency f is one of the improtant factors that affect the fatigue crack growth rate under the corrosive environment.So both microeffects and macroeffects of loading frequency f on the corrosion fatigue are studied by experiment research and theoretical analysis.And a mathematical model of corrosion fatigue crack growth rate da/dN-(ΔK,f) is derived.This mathematical model will make it possible that the corrosion fatlgue crack growth rate of aeronautical materials and service life of aeroplane under corrosive aneironment are determined by computer simulation.

Key words: corrosion fatigue, passivity, mathemet ical model

中图分类号: