Magnetorheological fluids (MRF) are usually evaluated in shear mode on a plane that is perpendicular to a magnetic field. The measurements thus obtained are perpendicular to the magnetic field. However, to better choose and design possible applications, a complete three-dimensional characterization would be needed. In the present work the rheological behavior of a MRF is evaluated in the three directions of the space while subjected to a uniform magnetic field and different mechanical stresses or deformations. The anisotropy developed in the material as a consequence of the application of a unidimensional magnetic field originates that different compression and shear moduli are obtained depending of the directions of the stresses with respect to the magnetic field. The experimental setups used here were carefully chosen to perform oscillatory measurements in different directions with respect to the applied magnetic field.

中文翻译：

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测量单个三维模量以评估均匀磁场对磁流变流体的影响

磁流变流体 (MRF) 通常在垂直于磁场的平面上以剪切模式进行评估。如此获得的测量值垂直于磁场。然而，为了更好地选择和设计可能的应用，需要完整的 3D 表征。在目前的工作中，MRF 的流变行为在空间的三个方向上进行评估，同时受到均匀磁场和不同机械应力或变形的影响。由于施加一维磁场而在材料中产生的各向异性源于根据应力相对于磁场的方向获得不同的压缩和剪切模量。