| 涡轮叶片高温低循环疲劳/蠕变寿命试验评定 |
| |
| 引用本文： | 王延荣,宋兆泓,侯贵仓.涡轮叶片高温低循环疲劳/蠕变寿命试验评定[J].航空动力学报,2002,17(4):407-411. |
| |
| 作者姓名： | 王延荣 宋兆泓 侯贵仓 |
| |
| 作者单位： | 北京航空航天大学,动力系,北京,100083 |
| |
| 摘 要： | 利用试验方法确定了某型发动机 级涡轮叶片高温低循环疲劳寿命 ,试验计入了高温蠕变的影响。为了缩短试验时间 ,按照损伤等效原则 ,确定了等效加速试验载荷谱。试验是在采用感应加热、液压加载的菲利轮试验器上进行的。采用对数正态分布和威布尔分布对试验结果进行了统计分析 ,给出了置信度为 95 %、可靠度为 99.87%的叶片安全使用寿命。
|
| 关 键 词： | 涡轮叶片 低循环疲劳 蠕变 寿命 可靠性 |
| 文章编号： | 1000-8055(2002)04-0407-05 |
| 收稿时间： | 2001/7/10 0:00:00 |
| 修稿时间： | 2001年7月10日 |
Experimental Evaluation of High Temperature Low Cycle Fatigue/Creep Life of Turbine Blade |
| |
| WANG Yan-rong,SONG Zhao-hong and HOU Gui-cang.Experimental Evaluation of High Temperature Low Cycle Fatigue/Creep Life of Turbine Blade[J].Journal of Aerospace Power,2002,17(4):407-411. |
| |
| Authors: | WANG Yan-rong SONG Zhao-hong and HOU Gui-cang |
| |
| Institution: | Beijing University of Aeronautics and Astronautics,Beijing100083,China;Beijing University of Aeronautics and Astronautics,Beijing100083,China;Beijing University of Aeronautics and Astronautics,Beijing100083,China |
| |
| Abstract: | The high temperature low cycle fatigue life of the 2nd stage turbine blade in an aircraft engine in service has been evaluated by use of the experimental method,in which the effect of creep has been considered.In order to shorten the test period,according to the principle of damage-equivalence,the equivalent accelerated test loading-spectrum has been determined.The test has been implemented on a test-bed in which eddy current inducted heating and hydraulic pressure driven force are applied.The test results have been analyzed statistically by use of logarithmic normal distribution and Weibull distribution,and the safe in-service life of the blade with the confidence level of 95% and the reliability of 99.87% has been determined. |
| |
| Keywords: | turbine blade low cycle fatigue creep life reliability |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
