The shape and character of the zero line , an important criterion for magnetic memory testing of the normal field is analyzed under different longitudinal magnetization 研究了管件處于外部弱磁場的缺陷段的位置對表面磁場法向分量零值線分布的影響。
The general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges 簡述20年來中國無損檢測中磁偶板子理論研究的概況和進展,主要介紹磁偶極子,有限長磁偶極線和極帶,磁粉顆粒的受力,磁化場方向?qū)Υ欧埏@現(xiàn)缺陷的影響,棒料、管材和方鋼的縱向磁化,工件表面溝槽深度對其引起漏磁場的影響,周向磁化時工件底棱上的雜亂顯示成因,圓盤邊緣柱面上溝槽內(nèi)外漏磁場的解析表達式和針狀磁介質(zhì)對兩個點磁荷間磁力的影響等。
Abstract : the general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges 文摘:簡述20年來中國無損檢測中磁偶板子理論研究的概況和進展,主要介紹磁偶極子,有限長磁偶極線和極帶,磁粉顆粒的受力,磁化場方向?qū)Υ欧埏@現(xiàn)缺陷的影響,棒料、管材和方鋼的縱向磁化,工件表面溝槽深度對其引起漏磁場的影響,周向磁化時工件底棱上的雜亂顯示成因,圓盤邊緣柱面上溝槽內(nèi)外漏磁場的解析表達式和針狀磁介質(zhì)對兩個點磁荷間磁力的影響等。