开孔试件的表面粗糙度对疲劳寿命影响的定量分析

J4 ›› 2008, Vol. 19 ›› Issue (3): 327-329.

开孔试件的表面粗糙度对疲劳寿命影响的定量分析

刘军;刘勇俊;刘永寿;岳珠峰

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-02-10 发布日期:2008-02-10

Quantitative Analysis of Roughness Effect on Fatigue Life of Specimen with Open Holes

Liu Jun;Liu Yongjun;Liu Yongshou;Yue Zhufeng

Received:1900-01-01 Revised:1900-01-01 Online:2008-02-10 Published:2008-02-10

摘要/Abstract

摘要：

对不同表面粗糙度的开孔铝板进行了疲劳试验。根据试验结果，利用回归分析方法建立了开孔试件的表面粗糙度对疲劳寿命影响的经验公式；通过扫描电镜进行了断口分析，揭示了表面粗糙度对裂纹形成方式的影响。最后，运用细节疲劳额定值法对开孔试件的疲劳寿命进行了可靠性分析。

关键词: 粗糙度；开孔；疲劳寿命；细节疲劳额定值；角裂纹；内裂纹

Abstract:

The fatigue testing of the specimen with a central open hole was carried out to investigate the influence of the surface roughness on the fatigue lifetime. Fracture morphology investigations were used by scanning electron microscope. The reliability analysis of specimen was carried out by detail fatigue rating.

Key words: roughness, open hole, fatigue life, detail fatigue rating, corner crack;internal crack

中图分类号:

O346.23

刘军;刘勇俊;刘永寿;岳珠峰. 开孔试件的表面粗糙度对疲劳寿命影响的定量分析[J]. J4, 2008, 19(3): 327-329.

Liu Jun;Liu Yongjun;Liu Yongshou;Yue Zhufeng. Quantitative Analysis of Roughness Effect on Fatigue Life of Specimen with Open Holes[J]. J4, 2008, 19(3): 327-329.