摘要
本文基于三轴磁阻传感器HMC5983设计了磁记忆检测探头,研制了基于USB2I2C控制模块的二维金属磁记忆检测系统,以45钢为试验对象开展了金属磁记忆试验研究。通过分析磁记忆二维分量以及其微分分量合成的李萨如图大小,确定试件中存在应力集中的严重程度,试验结果表明:磁记忆二维检测不仅能够准确定位试件中应力集中的部位,而且能够从梯度变化角度对应力集中严重程度进行预判评估。
Based on three-axis magnetoresistive sensor HMC5983, this paper designed a magnetic memory detection probe, developed based on USB2I2C control module of the two-dimensional metal magnetic memory detection system. In this paper, the metal magnetic memory test was carried out on the samples of 45 steel. By analyzing the two-dimensional components of the leakage magnetic field and analyzing the area size of the Lissajous figure of the differential component, it is determined the severity of the stress concentration in the test blocks. The results show that the magnetic memory two-dimensional detection can accurately locate the residual stress concentration of the test piece. And from the perspective of gradient changes, it can predict the severity of stress concentration assessment.
出处
《失效分析与预防》
2017年第5期278-282,330,共6页
Failure Analysis and Prevention
基金
国家自然科学基金(51265041)
国家重大科学仪器设备开发专项(2013YQ140505)
国家公益性行业科研专项(201510066)
江西省教育厅基金(GJJ151545)
无损检测技术教育部重点实验室开放基金(EW201708252)
关键词
磁记忆检测
应力集中
李萨如图
定量评估
magnetic memory testing
stress concentration
Lissajous figure
quantitative assessment
