|
|||||
|
|
| 基于裂纹柔度法的残余应力检测误差分析及处理方法 | |
| 引用本文： | 孙娟,任凤章,张旦闻,刘宏昭. 基于裂纹柔度法的残余应力检测误差分析及处理方法[J]. 河南科技大学学报(自然科学版), 2009, 30(4): 1-4 |
| 作者姓名： | 孙娟 任凤章 张旦闻 刘宏昭 |
| 作者单位： | 1. 洛阳理工学院,机电工程系,河南,洛阳,471023 2. 河南科技大学,材料科学与工程学院,河南,洛阳,471003 3. 西安理工大学,机械工程系,陕西,西安,710049 |
| 基金项目： | 国家自然科学基金项目(50771042) |
| 摘 要： | 对裂纹柔度法残余应力计算中的误差传递进行了深入分析。应用误差传递函数对包含协方差、建模误差在内的Legendre插值模型的收敛、稳定性进行了分析，建立了应力误差估算方法。验证实验表明：通过应变偏差可确定满足最小应力不确定度条件最佳收敛阶，由此估算的应力误差与实际结果基本一致。 |
| 关 键 词： | 残余应力检测 误差分析 裂纹柔度法 |
Error Analysis and Treatment in Residual Stress Detecting for Crack Compliance Method |
|
| SUN Juan,REN Feng-Zhang,ZHANG Dan-Wen,LIU Hong-Zhao. Error Analysis and Treatment in Residual Stress Detecting for Crack Compliance Method[J]. Journal of Henan University of Science & Technology:Natural Science, 2009, 30(4): 1-4 | |
| Authors: | SUN Juan REN Feng-Zhang ZHANG Dan-Wen LIU Hong-Zhao |
| Affiliation: | 1.Department of Mechanical & Electrical Engineering;Luoyang Institute of Technology;Luoyang 471023;China;2.Materials Science & Engineering College;Henan University of Science & Technology;Luoyang 471003;3.Department of Mechanical Engineering;Xi'an University of Technology;Xi'an 710049;China |
| Abstract: | Error propagation in residual stress measurement for crack compliance method is comprehensively analyzed.The error propagation formulation including covariances and model error was presented to analyze convergence and stability of Legendre interpolation.The way of uncertainty estimation in stress calculation were established.The validity test shows that an optimal order for Legendre interpolation can usually be chosen by the misfit of measuring stain data to meet the needs of minimizing stress error that ar... |
| Keywords: | Residual stress measurement Error analysis Crack compliance method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |