• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Manufacturing Science and Engineering >Observations on the Correlation between Statistics of Some Fatigue Crack Growth Data and Applied Loads for 2024-T351
【24h】

Observations on the Correlation between Statistics of Some Fatigue Crack Growth Data and Applied Loads for 2024-T351

机译：对2024-T351的一些疲劳裂纹增长数据统计相关性与施加载荷的相关性的观察

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three sets of fatigue crack growth data tested under different constant-amplitude loads for CT specimens made of 2024 T-351 aluminum alloy are released, and the analyzed results presented in this study are specially emphasized on the correlation between statistics of these scattered fatigue data and their applied loads. Investigating the scatters of initiation cycle and specimen life, it was found that both the mean and standard deviation of initiation cycle, as well as the mean and standard deviation of specimen life, decrease as applied stress amplitude increases. Moreover, the negatively linear correlation between the median values of initiation cycle and applied stress amplitudes presented in linear scale, and between the median values of specimen life and applied stress amplitudes presented in logarithmic scale were found, where the initiation cycle and specimen life are all best depicted by normal distributions for all three data sets. Finally, the mean of intercepts and mean of exponents of Paris-Erdogan law for each data set were studied, and it was found that the mean of intercepts decreases greatly as applied stress amplitude increases, while the mean of exponents decreases slightly.
机译：在2024T-351铝合金中，在不同恒定幅度载量下测试的三组疲劳裂纹生长数据被释放，并在本研究中提出的分析结果特别强调这些分散疲劳数据的统计数据之间的相关性他们的应用负荷。研究启动周期和标本生活的散击，发现启动周期的平均值和标准偏差以及样本寿命的平均值和标准偏差，随着施加的应力幅度的增加而降低。此外，在线尺度中呈现的起始周期的中值和施加应力幅度之间的负线性相关性，以及在对数刻度上呈现的标本寿命和施加应力幅度的中值与施加应力幅度之间的相关性。所有的启动周期和标本生活都是所有三种数据集的正常分布最佳地图。最后，研究了每个数据集的截止截取和指数的平均值，并且发现截距的平均值大大降低，因为施加应力幅度增加，而指数的平均值略微降低。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号