第7期 阮景红等：不同应力比交替作用下单参数疲劳寿命预测方法 .703. ating board report R/H/R6-RW3.Int J Pressure Vessels Pip- [6]帅健.X52管线钢的低循环频率瘦劳裂纹扩展实验.焊管， ing,1998,32:2 2000,23(6):20 [3]British Standards Institute.BSI PD6493 Guidelines On Method [7]Surenh S.材料的疲芳.王中光，译.北京：国防工业出版社， for Assessment of the Acceptability of Flaws in Fusion Welding 1993 Structures.London:British Standards institute,1991:1 [8】黄小平，崔宏斌，石德新，等.压弯组合应力下高强钢表面裂纹 [4]American Petroleum Institute.API RP579 Recommended Prac- 形貌变化规律实验研究.哈尔滨工程大学学报。2001(3)：22 tice for fitness-for-Service.Washington DC:American Petroleum [9]冯西桥，何树延.管道中表面裂纹的疲劳扩展研究清华大学学 Institute.2000:1 报：自然科学版，1998,38(7)：35 [5]蒋云，吕英民X52管材的疲芳裂纹扩展速率实验研究油气储 [10]陈传尧疲劳与断裂武汉：华中科技大学出版社，2002 运，1999,18(8)：52 One parameter fatigue life prediction method at different stress ratios RUA N Jinghong,LU Minxu,CHEN Yingfeng Corrosion and Protection Center.University of Science and Technology Beijing.Beijing 100083.China ABSTRACI In order to accurately predict the remaining life of a gas pipeline which runs at different stress ra- tios,a new method of predicting the remaining life of flaw pipeline steels,namely,one parameter fatigue life prediction method,at different stress ratios was proposed based on fatigue crack growth rate tests.The method considered the destruction effect created by different stress ratios during the running.The remaining life of X52 steel as an example was predicted under the condition of simulating the nature gas running (R=0.1 and R= 0.6 by turns). KEY WORDS pipeline steel;metal fatigue;fatigue crack growth rate;remaining life;life predictionating board report R／H／R6—RW3．Int J Pressure Vessels Pip￾ing‚1998‚32：2 ［3］ British Standards Institute．BSI PD6493 Guidelines On Method for Assessment of the Acceptability of Flaws in Fusion Welding Structures．London：British Standards institute‚1991：1 ［4］ American Petroleum Institute．API RP579 Recommended Prac￾tice for fitness-for-Service．Washington D C：American Petroleum Institute‚2000：1 ［5］ 蒋云‚吕英民．X52管材的疲劳裂纹扩展速率实验研究．油气储 运‚1999‚18（8）：52 ［6］ 帅健．X52管线钢的低循环频率疲劳裂纹扩展实验．焊管‚ 2000‚23（6）：20 ［7］ Surenh S．材料的疲劳．王中光‚译．北京：国防工业出版社‚ 1993 ［8］ 黄小平‚崔宏斌‚石德新‚等．压弯组合应力下高强钢表面裂纹 形貌变化规律实验研究．哈尔滨工程大学学报‚2001（3）：22 ［9］ 冯西桥‚何树延．管道中表面裂纹的疲劳扩展研究．清华大学学 报：自然科学版‚1998‚38（7）：35 ［10］ 陈传尧．疲劳与断裂．武汉：华中科技大学出版社‚2002 One-parameter fatigue life prediction method at different stress ratios RUA N Jinghong‚LU Minxu‚CHEN Y ingfeng Corrosion and Protection Center‚University of Science and Technology Beijing‚Beijing100083‚China ABSTRACT In order to accurately predict the remaining life of a gas pipeline which runs at different stress ra￾tios‚a new method of predicting the remaining life of flaw pipeline steels‚namely‚one-parameter fatigue life prediction method‚at different stress ratios was proposed based on fatigue crack growth rate tests．The method considered the destruction effect created by different stress ratios during the running．The remaining life of X52 steel as an example was predicted under the condition of simulating the nature gas running （ R＝0∙1and R＝ 0∙6by turns）． KEY WORDS pipeline steel；metal fatigue；fatigue crack growth rate；remaining life；life prediction 第7期 阮景红等： 不同应力比交替作用下单参数疲劳寿命预测方法 ·703·