基于分形理論的平面線圈激勵渦流傳感器
發(fā)布時間:2019-06-09 14:18
【摘要】:提出并設計了一種基于分形理論自相似結構的科赫雪花圖形激勵裝置的渦流傳感器,利用COMSOL多物理場仿真軟件進行了計算分析,在此基礎上搭建實驗平臺并進行了實驗驗證.結果表明,與采用經典的圓形線圈激勵方式相比,以科赫雪花圖形為激勵裝置的渦流傳感器,能有效提高局部渦流能量密度,改善渦流分布形態(tài),從而提高對微小裂紋缺陷檢測的靈敏度.實驗表明所研制的新型平面結構渦流傳感器,可以制作用于柔性陣列傳感器,并能為結構健康監(jiān)測中提供監(jiān)測數(shù)據(jù).
[Abstract]:A vortex sensor based on fractal theory self-similar structure of Koch snowflake graphic excitation device is proposed and designed. The calculation and analysis are carried out by using COMSOL multi-physical field simulation software. On this basis, the experimental platform is built and verified by experiments. The results show that compared with the classical circular coil excitation method, the vortex sensor with Koch snowflake pattern as the excitation device can effectively increase the local vortex energy density and improve the vortex distribution pattern. So as to improve the sensitivity of micro crack defect detection. The experimental results show that the new planar structure vortex sensor can be used in flexible array sensor and can provide monitoring data for structural health monitoring.
【作者單位】: 北京理工大學機械與車輛學院;
【基金】:國家自然科學基金資助項目(51275048)
【分類號】:TP212
[Abstract]:A vortex sensor based on fractal theory self-similar structure of Koch snowflake graphic excitation device is proposed and designed. The calculation and analysis are carried out by using COMSOL multi-physical field simulation software. On this basis, the experimental platform is built and verified by experiments. The results show that compared with the classical circular coil excitation method, the vortex sensor with Koch snowflake pattern as the excitation device can effectively increase the local vortex energy density and improve the vortex distribution pattern. So as to improve the sensitivity of micro crack defect detection. The experimental results show that the new planar structure vortex sensor can be used in flexible array sensor and can provide monitoring data for structural health monitoring.
【作者單位】: 北京理工大學機械與車輛學院;
【基金】:國家自然科學基金資助項目(51275048)
【分類號】:TP212
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