压力容器2016，Vol.33Issue(12)：49-58,10.DOI:10.3969/j.issn.1001-4837.2016.12.008
不同倾斜角度角焊缝磁记忆信号定量特征研究
Quantitative MMM Features Combined Experiments and Magneto-mechanical Coupling Simulation for Fillet Weld with Different Angles
摘要
Abstract
Due to the special position of fillet weld in the special position of equipment structure,there exists the botdeneck of fillet weld evaluation by using traditional nondestructive testing methods.In order to the bottleneck,a new quantitative model is presented based on feature parameter extraction of metal magnetic memory (MMM) signals.By considering the welding residual stress,the intersecting pipe fillet welds with different inclined angles are simulated by the magneto-mechanical coupling under the three-dimensional geomagnetic field.The changing rule of MMM tangential and normal signals is obtained,and then the MMM feature parameters are extracted for fillet welds under different loads.The quantitative characterization model for the stress concentration degree of fillet weld under different loads is established.Further,considering the difference between finite element simulation and actual MMM testing,the practical experiments are carried out in order modify the quantitative characterization model.The result shows the maximum error of the modified model is 7.117％,which provides the scientific basis for quantitative MMM testing for fillet weld defects in practical engineering.关键词
角焊缝/有限元仿真/力磁耦合/定量研究/磁记忆检测Key words
weld/finite element simulation/magneto-mechanical coupling/quantitative analysis/metal magnetic memory testing分类
机械制造引用本文复制引用
邢海燕,孙晓军,杨文光,党永斌,杜志新..不同倾斜角度角焊缝磁记忆信号定量特征研究[J].压力容器,2016,33(12):49-58,10.基金项目
国家自然科学基金项目(11272084,11472076,11072056) （11272084,11472076,11072056）
黑龙江省博士后科研启动基金项目(LBH-Q13035) （LBH-Q13035）
中石油科技创新基金项目(2015D-5006-0602) （2015D-5006-0602）
东北石油大学研究生创新科研项目资助项目(YJSCX2016-024NEPU) （YJSCX2016-024NEPU）
