国防科技大学学报2016，Vol.38Issue(2)：138-143,6.DOI:10.11887/j.cn.201602023
船舶轴频电场等效源强度计算方法
Calculation method of vessels′shaft rate electric field equivalent source magnitude
摘要
Abstract
In order to exploit horizontal time-harmonic electric dipoles to model shaft rate electric field of practical vessels,the magnitude and location of equivalent source need to be determined.Aimed at vessels mounting the impressed current cathode protection system,the fact that the equivalent source is superimposition of two directionally opposite horizontal time-harmonic electric dipoles is clarified by analyzing the underlying physical mechanism of shaft rate electric field.On the basis of the former conclusion,a practical calculation method of equivalent source magnitude of shaft rate electric field was proposed,which means that the magnitude can be obtained by combining source magnitude of static electric dipole inverted from measured static electric field with the ratio coefficient between the maximum value of shaft rate signal envelope and that of static electric field signal.Besides,the location of equivalent source is identical to that of static electric dipole.The effectiveness of the proposed method is validated by the vessel model test.关键词
船舶/轴频电场/静电场/电偶极子/外加电流阴极保护Key words
vessel/shaft rate electric field/static electric field/electric dipole/impressed current cathode protection分类
信息技术与安全科学引用本文复制引用
程锐,姜润翔,龚沈光..船舶轴频电场等效源强度计算方法[J].国防科技大学学报,2016,38(2):138-143,6.基金项目
国家自然科学基金资助项目（51109215）；国家重大安全基础研究资助项目 （）
