常州大学学报（自然科学版）2026，Vol.38Issue(4)：52-60,9.DOI:10.3969/j.issn.2095-0411.2026.04.006
小管径弯管不饱和漏磁场模拟及缺陷量化研究
Study on simulation of unsaturated leakage magnetic field and defect quantification of small diameter elbow pipe
摘要
Abstract
When passing through the small diameter elbow pipe,the leakage magnetic detector chan-ges the lift-off value and then the applicability of the traditional quantization method has to be investi-gated.This paper established a three-dimensional finite element simulation model of defective leakage magnetic field of elbow pipe,to study the influence of defect size,defect location,pipe curvature radi-us and other factors on the magnetic flux density of defects in small diameter elbow pipe,to build the quantitative model of defects in small diameter elbow pipe.The results indicate that there is a difference in magnetization intensity between straight pipe and elbow pipe,and uneven magnetic field occurs in the elbow pipe;the defect size is the main factor affecting the magnetic flux density,and the magnetic flux density of the inner arch of the elbow pipe is larger than that of the outer arch under the same de-fect size;the curvature radius of the pipeline changes the distribution of the magnetic flux density of the pipeline,and an unsaturated leakage magnetic field is formed.This research builds a small pipe di-ameter elbow defect quantification model for small pipe diameter elbow defect length,width and depth of the quantification error of 7.10%,9.77%,and 8.74%,respectively.关键词
小管径管道/弯管缺陷/缺陷量化/不饱和漏磁场Key words
small diameter pipe/elbow defects/defect quantification/unsaturated leakage magnetic field分类
资源环境引用本文复制引用
赵鹏程,张颖,窦广超,潘传禹,王佳音..小管径弯管不饱和漏磁场模拟及缺陷量化研究[J].常州大学学报（自然科学版）,2026,38(4):52-60,9.基金项目
中国石油-常州大学创新联合体资助项目(KC20210301) （KC20210301）
常州大学科研启动基金资助项目(ZMF22020039). （ZMF22020039）
