基于磁场的钢筋锈蚀仪数值仿真分析研究

NUMERICAL SIMULATION ANALYSIS OF REBAR CORROSION DETECTOR BASED ON MAGNETIC FIELD

基于磁介质理论的钢筋锈蚀检测传感器(MCD)能够动态、定量化表征钢筋锈蚀率,检测结果具有较高的精度。为了对MCD进行更进一步的优化设计,必须深入研究MCD的测量原理。文中采用数值仿真技术建立了MCD的数值模型,分析研究了钢筋的长度和放置位置对MCD测试结果的影响。研究结果表明,当钢筋长度大于1cm时,MCD的测量电压基本不受影响;钢筋的最佳放置位置应在MCD测试区域的中心点,其测量结果才会更加精确,并符合在测量前所建立的拟合曲线及拟合公式。

Magnetic Rebar Corrosion Detector(MCD)developed based on magnetic media theory can dynamically and quantitatively characterize the corrosion ratio of rebar,and the detection results have high accuracy.In order to further optimize the design of MCD,the measurement principle of MCD should be studied comprehensively.This research established a numerical model of MCD to analyze and study the influence of the length and placement of rebar on the MCD test results.The research results show that the measured voltage of the MCD is basically not affected when the length of the rebar is greater than 1cm.Moreover,the best place for the rebar should be at the center of the MCD testing area,and the measurement results will be more accurate and consistent with the fitting curve and fitting formula established before the measurement.