基于强化磁记忆的螺栓联接件损伤在位监测研究  

In-situ Monitoring Study of Bolted Joint Damage Based on Strengthening Magnetic Memory

作　　者：高玄怡[1] 邱忠超 张瑞蕾[2] 张卫民 李瑾博[1] GAO Xuan-yi;QIU Zhong-chao;ZHANG Rui-lei;ZHANG Wei-min;LI Jin-bo(School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China;School of Mechanical and Electrical Engineering,Shandong Management University,Jinan 250100,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学信息与电子学院,北京100181 [2]山东管理学院机电学院,山东济南250100 [3]北京理工大学机械与车辆学院,北京100081

出　　处：《仪表技术与传感器》2018年第3期30-32,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(51275048)

摘　　要：针对螺栓联接结构中螺栓孔位置处裂纹损伤实时监测的需求,采用强化磁记忆检测技术,搭建了基于GMR传感器的环螺栓孔阵列的低周疲劳裂纹产生和扩展监测装置,对螺栓孔孔边的状态进行实时在位监测,并通过分析监测信号对拉伸试件的损伤断裂位置进行定位。结果表明,该装置可以有效预测裂纹萌生及试件断裂的位置,并且在损伤出现的早期阶段磁异变信号更加敏感。According to the requirement of real-time monitoring of the crack damage around the bolt hole of bolted joint,a set of monitoring device based on GMR sensor was developed,which can real time on-line monitoring the state around the bolt hole,and determine the position of damage fracture of the tensile specimen by analyzing the detection signal.The results showed that the device can predict crack initiation and fracture of the specimen position,and the abnormal magnetic signal is more sensitive in the early stages of injury.

关 键 词：螺栓联接件 在位监测 裂纹萌生 强化磁记忆检测 

分 类 号：TH140[一般工业技术—材料科学与工程]