| 统计极值法的两种数据采集方式对预测疲劳强度的影响 |
| |
| 引用本文： | 刘国栋,梁益龙,任涛.统计极值法的两种数据采集方式对预测疲劳强度的影响[J].兵器材料科学与工程,2012,35(1):15-18. |
| |
| 作者姓名： | 刘国栋 梁益龙 任涛 |
| |
| 作者单位： | 贵州大学材料与冶金学院贵州省材料结构与强度重点实验室,贵州贵阳,550003;贵州大学材料与冶金学院贵州省材料结构与强度重点实验室,贵州贵阳,550003;贵州大学材料与冶金学院贵州省材料结构与强度重点实验室,贵州贵阳,550003 |
| |
| 基金项目： | 国家科技支撑计划项目（2007BAE11B03）；贵州省重大专项 |
| |
| 摘 要： | 利用非水溶液电解法提取夹杂物和观测疲劳断口上疲劳源处夹杂物的方法收集夹杂物尺寸的数据,通过统计极值法计算某一体积的EA4T钢中的最大夹杂物尺寸,以此对该体积的EA4T钢进行疲劳强度预测。两种方法推算的结果与真实值差别较大,提取夹杂物方法推算出的疲劳极限下限值高于观测疲劳断口上疲劳源处夹杂物方法推算的结果。
|
| 关 键 词： | 统计极值法 夹杂物 疲劳强度 |
Effect of two data acquisition methods of statistics of extreme values on forecasting fatigue strength |
| |
| LIU Guodong,LIANG Yilong,REN Tao.Effect of two data acquisition methods of statistics of extreme values on forecasting fatigue strength[J].Ordnance Material Science and Engineering,2012,35(1):15-18. |
| |
| Authors: | LIU Guodong LIANG Yilong REN Tao |
| |
| Affiliation: | (College of Materials and Metallurgy,Guizhou University,Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials,Guiyang 550003,China) |
| |
| Abstract: | The inclusion size data statistic was collected from inclusion at fatigue crack initiation site and inclusion obtained by means of electrolysis of nonaqueous solution.The maximum inclusion size in a certain volume of EA4T steel was calculated by statistics of extreme value method,and the fatigue strength was forecasted by the maximum inclusion size.The two results are quite different from the real results,and the fatigue strength lower limit calculated by the inclusion statistic from the fatigue crack initiation site is less than that from the electrolysis of nonaqueous solution. |
| |
| Keywords: | statistics of extreme values inclusion fatigue strength |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
