激光熔化沉积表面缺陷电涡流检测仿真  

Eddy Current Testing Simulation for Surface Defects for Laser Melting Deposition

作　　者：陈骋 朱明亮 李明玥 何振丰 王志国[2] 贺晨 CHEN Cheng;ZHU Ming-iang;LI Ming-yue;HE Zhen-feng;WANG Zhi-guo;HE Chen(CCTEG Shenyang Research Institute Co.,Ltd.,Fushun 113122,China;Shenyang Institute of Automation,Chinese Academy of Science,Shenyang 110016,China;School of Materials,Shenyang University of Technology,Shenyang 110169,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [2]中国科学院沈阳自动化研究所,辽宁沈阳110016 [3]沈阳工业大学材料学院,辽宁沈阳110169

出　　处：《真空》2024年第4期96-101,共6页Vacuum

基　　金：国防科技重点实验室基金(61420052022KJW05);揭榜挂帅项目(2022JH1/10800048);2023年数字辽宁智造强省(智造强省方向)专项资金项目(辽工信投资)【2023】171号;“兴辽英才计划”青年拔尖人才项目(XLYC2203154);沈阳市中青年科技创新人才支持计划项目(RC220527)。

摘　　要：基于增材制造领域电涡流检测方面的需求,针对电涡流检测信号解释困难及缺陷定量定性分析难题,采用有限元仿真技术建立了TC4钛合金增材样件表面缺陷电涡流检测模型,获得了检测过程中样件内部及周围电磁场的分布情况,研究了检测过程中缺陷长度、宽度以及深度变化对磁场信号的影响,并进行了试验验证。仿真结果显示,在一定范围内缺陷尺寸增大会使检测信号变强,缺陷的长度、宽度以及深度变化皆会对检测信号产生影响,试验验证结果与仿真结果具有较好的一致性。Based on the requirements of eddy current testing for additive manufacturing,in view of the difficulty of signal interpretation and defect quantitative and qualitative analysis of eddy current testing,the finite element simulation technology was adopted to establish an eddy current testing model for surface defects of TC4 titanium alloy additive parts.The distribution of electromagnetic field inside and around the sample during the inspection process was obtained,the influence of the length,width and depth of defects on the magnetic field signal during the inspection was studied,and the experimental verification was carried out.The simulation results indicate that the detection signal gets stronger as the increase of the defect size in a certain range,and variations in the length,width and depth of defects will all affect the detection signal,which is in good coincidence with the experimental results.

关 键 词：增材制造 电涡流检测 有限元仿真 钛合金 表面缺陷 

分 类 号：TG156[金属学及工艺—热处理]