中国机械工程2017，Vol.28Issue(15)：1778-1783,6.DOI:10.3969/j.issn.1004-132X.2017.15.003
轮廓法测试残余应力中的数据处理
Data Processing in Residual Stress Measurements Using Contour Method
摘要
Abstract
The quenched residual stresses of T-shaped aluminum alloy were tested using the con-tour method,and the data processing of measurement errors was focused.The final contours were cal-culated by envelop processing,contour averaging,Gauss mixed model fitting and node interpolation, and then were reversed and loaded to the stress reconstruction FEM model as boundary conditions. Then the mapping of residual stresses along the cross section to be measured were obtained.The stresses at the edge were modified using X-ray diffraction method.The comparisons of measured re-sults with quenching FEM results were analyzed via statistical methods.The results indicate that the quenched residual stress fields may be described accurately by combining contour method and X-ray diffraction method.The maximum tensile residual stress of the T-shaped specimen occurs at the junc-tion of the rib and web,and close to the web.关键词
轮廓法/数据处理/铝合金/T形构件/残余应力Key words
contour method/data processing/aluminum alloy/T-shaped specimen/residual stress分类
矿业与冶金引用本文复制引用
谢国贞,吴运新,龚海,李晨,刘瑶琼,姬浩,张伟..轮廓法测试残余应力中的数据处理[J].中国机械工程,2017,28(15):1778-1783,6.基金项目
国家重点基础研究发展计划(973计划)资助项目(2012CB619505) （973计划）
国家自然科学基金资助项目(51327902,51405520) （51327902,51405520）
国家国际科技合作专项(2014DFA51250) （2014DFA51250）
高性能复杂制造国家重点实验室自主研究课题(ZZYJKT2016-02) （ZZYJKT2016-02）
