摘要
为了解决管道应力检测中难以自动判断的问题,开发了一种基于磁记忆方法的管道应力检测设备。首先介绍了磁记忆方法实现管道应力检测的原理,搭建了以S3C2140芯片作为核心的检测系统,其中选用各项异性磁阻(AMR))传感器HMC 5883L作为弱磁场采集探头,开发了基于Linux嵌入式系统的显示终端,根据GB/T 35090制定应力集中判定方法,实现了对管道应力集中的定量评价。该设备的磁场检测精度与TSC系列检测仪无显著性差异。最后采用了残余应力XRD测量法对试样应力集中情况进行验证。实验表明,该设备能够反映材料内部应力集中情况,适用于输送管道的应力集中的检测。
In order to solve the problem of automatic detection for pipeline stress,a pipeline stress detection equipment based on magnetic memory method(MMM)is developed.Firstly,the principle of MMM to detect the stress concentration was introduced.And then an embedded system based on S3 C2440 MCU was designed.The weak magnetic field probe is anisotropic magneto resistance(AMR)sensor HMC 5883 L.The visualization terminal based Linux system was developed.According to GB/T 35090,the criterion of stress concentration is carried out for the quantitative evaluation of pipeline.There is no significantly difference from that of TSC series detector from the validation experiment.Finally,the residual stress XRD method was used to verify the stress concentration of the samples.The experiment shows that the equipment can reflect the stress concentration in the material and is suitable for the detection of the stress concentration in the conveying pipeline.
作者
龚灯
韩刚
Gong Deng;Han Gang(Department of Mechanical Technology,Anhui Vocational College of Defense Technology,Lu’an 237011,China;School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第2期94-100,共7页
Journal of Electronic Measurement and Instrumentation
基金
省教育厅高校自然科学研究重点项目(KJ2018A0888)
省高校优秀青年骨干人才国内访问研修项目(gxgnfx2018145)资助
关键词
磁记忆
管道检测
应力集中
定量评价
magnetic memory method
pipeline testing
stress concentration
quantitative evaluation
