摘要
以抽油杆材料疲劳裂纹扩展速率为依据，对抽油杆扳手方段存在半椭圆表面裂纹、角裂纹和直边裂纹时的剩余寿命进行了分析、推导计算，得到了便于工程应用的剩余寿命图线，为抽油杆缺陷评定提供了依据。
According to the extension rate of fatigue cracks on sucker rod, the authors make an analysis of the residual life of the sucker rod wrench square with semi-elliptic surface crack,angular crack or straightedge crack,and work out the residual life diagrams for engineering application, providing a basis for the assessment of sucker rod defects.
出处
《石油机械》
北大核心
1994年第6期39-42,52,共5页
China Petroleum Machinery
关键词
抽油杆
裂纹
寿命
sucker rod, surface crack ,residual life
