Le Bras Y, Lasheras A, Gutierrez J, Mazaleyrat F, Greneche J M
LUNAM, Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, Le Mans, France.
Rev Sci Instrum. 2013 Apr;84(4):043904. doi: 10.1063/1.4799177.
Measurement of the magneto-mechanical parameters characteristics of amorphous ribbons often requires complex or limited methods due to their very small thickness. In this paper, it is shown how one can establish and estimate the characteristics of a magnetostrictive resonator from the experimental frequency response free of any kind of mechanical measurement (stress or elongation). This technique which is completely developed with a ribbon exhibiting good resonator properties, is suitable to estimate the magneto-mechanical coupling coefficient k33 and the Young's modulus and also to establish the magnetostriction curves λ(H) of amorphous ribbons. Results obtained from resonators made of 2605SC and 2826 from Metglas(TM) ribbons confirmed the validity of the present technique. However, measurements performed on a thin foil of nickel demonstrate that the present method cannot be extended to semi-soft magnetic materials. The technique which is proposed, has serious advantages upon others as it is non-destructive, low cost and easy to develop compared to common ones.
由于非晶带材的厚度非常小，测量其磁机械参数特性通常需要复杂或受限的方法。本文展示了如何从无任何机械测量（应力或伸长）的实验频率响应中建立和估计磁致伸缩谐振器的特性。该技术是利用具有良好谐振器特性的带材完全开发出来的，适用于估计磁机械耦合系数k33和杨氏模量，也适用于建立非晶带材的磁致伸缩曲线λ(H)。由Metglas(TM) 2605SC和2826带材制成的谐振器所获得的结果证实了本技术的有效性。然而，在镍薄箔上进行的测量表明，本方法不能扩展到半软磁材料。所提出的技术与其他技术相比具有显著优势，因为与常见技术相比，它是非破坏性的、低成本且易于开发。
