摘要
常规的金属塑性损伤检测方法大多是基于单一物理场进行检测的,单一场检测通常具有物理局限性,难以同时达到良好的对比度和分辨率。该文基于涡流效应、红外热成像和热声效应,提出基于涡流热声的融合检测方法,分析涡流热声融合检测方法的基本理论,构建基于电磁感应的三维仿真模型,使用有限元方法分析瞬态电磁场、温度场和声场,提取电涡流、热图像和声信号。为验证涡流热声融合检测方法在金属塑性损伤检测中的可行性,搭建相应的试验系统,试验结果表明多物理场融合检测方法是可行的,能够有效检测出金属材料的塑形损伤。
General detection methods for plastic damage of metal materials are mostly based on a single physical field,which have physical limitations and be difficult to achieve good contrast and resolution at the same time.This paper proposed eddy current thermoacoustic fusion detection method based on the eddy current effect,infrared thermal imaging and thermoacoustic effect.The basic theory of eddy current thermoacoustic fusion detection method is analyzed,and the three-dimensional simulation model based on electromagnetic induction is built.Then,the transient electromagnetic field,temperature field and sound field are analyzed based on the finite element method and the eddy current,thermal image and acoustic signals were extracted.In order to verify the feasibility of eddy current thermoacoustic fusion detection method for plastic damage of metal materials,the test system is built,and the effectiveness of the fusion nondestructive testing method is verified by experiments,it can effectively detect the plastic damage of metal materials.
作者
戴宗贤
赵磊
张朕滔
莫洪波
尹爱军
任宏基
DAI Zongxian;ZHAO Lei;ZHANG Zhentao;MO Hongbo;YIN Aijun;REN Hongji(Chongqing Institute of Metrology and Quality Inspection,Chongqing 401120,China;Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621900,China;College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400044,China;Intelligent Manufacturing and Automobile School,Chongqing College of Electronic Engineering,Chongqing 401331,China)
出处
《中国测试》
CAS
北大核心
2022年第7期30-36,共7页
China Measurement & Test
基金
国家重点研发计划(2020YFB1709800)。
关键词
涡流成像
多物理场耦合
无损检测
热声效应
eddy current imaging
multi-physics coupling
nondestructive testing
thermoacoustic effect
