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首页> 外文会议>Active Materials: Behavior and Mechanics >Design and modeling of a single-crystal iron-gallium large magnetostrictive dynamic research transducer
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Design and modeling of a single-crystal iron-gallium large magnetostrictive dynamic research transducer

机译：单晶铁镓大磁致伸缩动态研究换能器的设计与建模

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摘要

Alloys of iron and non-magnetic gallium (of the form Fe_(1-x)Ga_x where x ranges from 13 to 30) exhibit large magnetostrictions of over 300 ppm at room temperature that are produced by saturation magnetic fields of approximately 600 Oe. While not producing magnetostrictions of the degree achievable with giant magnetostrictives, large magnetostrictive alloys of iron and gallium - called Galfenol - have much more desirable mechanical characteristics, such as non-brittleness and in-plane auxetic behavior. Additionally, Galfenol requires a much smaller saturation magnetic field than the giant magnetostrictives Terfenol and Terfenol-D (alloys of Iron and non-metallic Terbium and Dysprosium). Beginning from the body of knowledge gained from Terfenol and Terfenol-D dynamic research transducer designs is a good starting point for designing a Galfenol dynamic research transducer. However, several modifications are being made to adapt the transducer to some of Galfenol's unique properties. Any measured value uncertainty will quickly propagate through the calculated material properties. While not completely successful at addressing all the unique aspects Galfenol in this transducer design, the data presented will assist in future design attempts.
机译：铁和非磁性镓的合金（Fe_（1-x）Ga_x的形式，x的范围为13至30）在室温下表现出超过300 ppm的大磁致伸缩，这是由大约600 Oe的饱和磁场产生的。铁和镓的大型磁致伸缩合金-称为Galfenol-虽然不会产生巨型磁致伸缩所能达到的磁致伸缩性能，但却具有更理想的机械特性，例如非脆性和面内膨胀行为。此外，与巨大的磁致伸缩性Terfenol和Terfenol-D（铁和非金属Ter和Dy的合金）相比，Galfenol需要的饱和磁场要小得多。从Terfenol和Terfenol-D动态研究换能器设计获得的知识基础开始，是设计Galfenol动态研究换能器的良好起点。但是，正在进行一些修改，以使换能器适应Galfenol的某些独特特性。任何测量值的不确定性都会在计算出的材料特性中迅速传播。尽管在解决换能器设计中的Galfenol的所有独特方面并非完全成功，但所提供的数据将有助于将来的设计尝试。

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