磁致伸缩
磁致伸缩效应（英语：magnetostrictive effect）指的是对软磁体进行磁化后，其形状、大小会发生变化的物理现象,该现象在19世纪中叶被人们发现。磁致伸缩现象具有各向异性。当长度为l的磁性材料在磁化方向上的长度变化为Δl时，磁致伸缩率可表示为：λ=Δl/l。由于磁致伸缩率一般在10以下，所以对磁致伸缩效应的应用远不如对压电效应的应用广泛。到20世纪60、70年代后，发现了伸缩率在10的超磁致伸缩材料。磁致伸缩效应才重新受到重视。
magnetostriction
/mæɡ,niːtəʊ'strɪkʃən/ /mæg,nito'strɪkʃən/
英汉-汉英词典
n. 磁弹性
词组 | 习惯用语
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- electromagnetic adj. 电磁的
- electromagnetism n. 电磁,电磁学
- magnetization n. 磁化
- microinstruction n. 微指令
magnetostriction n. [物] 磁致伸缩
magnetostriction oscillator [电子] 磁伸缩振荡器
magnetostriction constant 磁致伸缩常数
magnetostriction transducer 磁致伸缩式换能器
longitudinal magnetostriction constant 纵向磁致伸缩系数
网络短语:
oscillator magnetostriction 磁伸缩振荡器
forced magnetostriction 强迫磁致伸缩
super magnetostriction 超磁致伸缩
magnetostriction liquidometer 磁致伸缩液位计
magnetostriction measurement 磁致伸缩量测
magnetostriction microphone 翻译
inverseflame magnetostriction 反磁致伸缩
magnetostriction type 磁致伸缩式
中文百科
英语百科
Magnetostriction 磁致伸缩
![Magnetostrictive hysteresis loop of Mn-Zn ferrite for power applications measured by semiconductor strain gauges](/Images/godic/202501/25/Magnetostrictive_hysteresis_loop_of_Mn-Zn_ferrite2042.png")
![Cut-away of a transducer comprising: magnetostrictive material (inside), magnetising coil, and magnetic enclosure completing the magnetic circuit (outside)](/Images/godic/202501/25/Magnetostrictive_transducer2045.PNG")
![Schéma de principe d'un transducteur magnétostrictif](/Images/godic/202501/25/Transducteur_magnetostrictif_annote2045.png")
Magnetostriction (cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization. The variation of materials' magnetization due to the applied magnetic field changes the magnetostrictive strain until reaching its saturation value, λ. The effect was first identified in 1842 by James Joule when observing a sample of iron.
- orientation of map
- orientation of mesh line
- orientation of mesh lines
- orientation of motor learning
- orientation of orbit
- orientation of particles
- orientation of plane table
- orientation of polygon
- orientation of purchasing power
- orientation of recorded signals
- orientation of reference ellipsoid
- orientation of related features
- orientation of section
- orientation of sensory field
- orientation of space
- orientation of surface
- orientation of surveying instrument
- orientation of test specimen
- orientation of the cutting edge
- orientation of torsion
- orientation order
- orientation or related features
- orientation parameter
- orientation perception
- orientation phase