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考虑裂纹形状变化的TC4钛合金振动疲劳裂纹扩展寿命预测

杨硕 张俊红 林杰威 付曦 寇海军

杨硕, 张俊红, 林杰威, 付曦, 寇海军. 考虑裂纹形状变化的TC4钛合金振动疲劳裂纹扩展寿命预测[J]. 航空动力学报, 2016, 31(10): 2353-2358. doi: 10.13224/j.cnki.jasp.2016.10.007
引用本文: 杨硕, 张俊红, 林杰威, 付曦, 寇海军. 考虑裂纹形状变化的TC4钛合金振动疲劳裂纹扩展寿命预测[J]. 航空动力学报, 2016, 31(10): 2353-2358. doi: 10.13224/j.cnki.jasp.2016.10.007
YANG Shuo, ZHANG Jun-hong, LIN Jie-wei, FU Xi, KOU Hai-jun. Vibration fatigue crack growth life prediction of TC4 titanium alloy by considering the influence of crack shape[J]. Journal of Aerospace Power, 2016, 31(10): 2353-2358. doi: 10.13224/j.cnki.jasp.2016.10.007
Citation: YANG Shuo, ZHANG Jun-hong, LIN Jie-wei, FU Xi, KOU Hai-jun. Vibration fatigue crack growth life prediction of TC4 titanium alloy by considering the influence of crack shape[J]. Journal of Aerospace Power, 2016, 31(10): 2353-2358. doi: 10.13224/j.cnki.jasp.2016.10.007

考虑裂纹形状变化的TC4钛合金振动疲劳裂纹扩展寿命预测

doi: 10.13224/j.cnki.jasp.2016.10.007
基金项目: 

高等学校博士学科点专项科研基金(20130032130005);天津市科技支撑计划重点项目(13ZCZDGX00200)

详细信息
    作者简介:

    杨硕(1987-),男,辽宁葫芦岛人,博士生,主要从事航空发动机叶片寿命预测研究.

  • 中图分类号: V215.6

Vibration fatigue crack growth life prediction of TC4 titanium alloy by considering the influence of crack shape

  • 摘要: 对TC4板材试件进行振动疲劳裂纹扩展试验,测得裂纹扩展寿命与裂纹长度之间的关系.使用超景深显微镜对裂纹形状进行观测和分析,拟合裂纹形状参数.将拟合表达式应用于应力强度因子幅值的计算中,并对裂纹扩展寿命进行预测.结果显示:裂纹形状参数对预测结果影响较大.当该参数取定值时,预测结果与试验结果误差较大.而所拟合的拟合表达式可以简单、准确地预测裂纹扩展寿命.

     

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出版历程
  • 收稿日期:  2015-01-22
  • 刊出日期:  2016-10-28

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