Reliability Analysis on Errors of Measuring Residual Stress in 7050 Aluminum Alloy with X-ray Diffraction
The error distribution of residual stress tested by X-ray diffraction on 7050 aluminum alloy was studied. In this paper, residual stress was measured, independently and repeatedly, many times on 7050 aluminum alloy with X-ray diffraction, then the errors about 50 stress values within the range of ± 30MPa were analyzed by the hypothesis testing. The results indicate that the errors of the residual stress measurement on 7050 aluminum alloy were followed the law of normal distribution about iV(19.39, (2.154)2) and the errors can be estimated by the least square calculator. The research lays the foundation to subsequent researches on the inherent law of the residual stress measurement with X-ray diffraction and the residual stress distribution and accuracy of stress of material surface.
Residual stress Error analysis X-ray diffraction 7050 aluminum alloy
Ai Xin Feng Bin Li Chuan Chao Xu Jun Wei Wang Zhen Chun Han Fen Shi
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
国际会议
上海
英文
1867-1871
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）