Mechanical Properties of Magneto-Sensitive Elastomers in a Homogeneous Magnetic Field: Theory and Experiment

2014 ◽  
Vol 338 (1) ◽  
pp. 96-107 ◽  
Author(s):  
D. Ivaneyko ◽  
V. Toshchevikov ◽  
D. Borin ◽  
M. Saphiannikova ◽  
G. Heinrich
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
Mechanical Properties ◽  
Homogeneous Magnetic Field ◽  
Theory And Experiment

scholarly journals On anisotropic mechanical properties of heterogeneous magnetic polymeric composites

2019 ◽  
Vol 377 (2143) ◽  
pp. 20180212 ◽  
Author(s):  
Dmitry Borin ◽  
Gennady Stepanov ◽  
Eike Dohmen
Keyword(s):  
Magnetic Field ◽  
Mechanical Properties ◽  
External Field ◽  
Axial Loading ◽  
Homogeneous Magnetic Field ◽  
Field Application ◽  
Direction Parallel ◽  
Shear Moduli ◽  
Planar Shear ◽  
Anisotropic Mechanical Properties

This study is devoted to the magneto-mechanical characterization of heterogeneous magnetoactive elastomers based on an elastic polydimethylsiloxane matrix with embedded spherical magnetic soft microparticles and magnetic hard microparticles of irregular shape. An issue of the anisotropic mechanical properties of these smart composites is considered. Non-magnetized and pre-magnetized specimens are characterized using a planar shear and axial loading in an externally applied homogeneous magnetic field. The field direction differs relative to the direction of the field used for the specimens pre-magnetization. Results of the different methods allow comparison of the tensile shear moduli for the samples with an initially identical composition. Obtained results demonstrate a strong correlation between the composite behaviour and orientation of the magnetic field used for the pre-magnetization of the sample relative to the external field applied to a sample during the test. Composites pre-magnetized in the direction parallel to an applied mechanical force and external magnetic field show higher magnetorheological response than composites pre-magnetized transversally to the force and the field. Application of the external field directed opposite to the direction of the pre-magnetization reduces the observed stiffening. Moreover, in this situation a softening of the material can be observed, depending on the magnitude of the external field and the field used for pre-magnetization. This article is part of the theme issue ‘Heterogeneous materials: metastable and non-ergodic internal structures’.

The Zeeman Effect in Triplet States of Rotating Asymmetric Molecules

1975 ◽  
Vol 53 (19) ◽  
pp. 1853-1860 ◽  
Author(s):  
J. C. D. Brand ◽  
C. di Lauro ◽  
D. S. Liu
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
Energy Levels ◽  
Zeeman Effect ◽  
Homogeneous Magnetic Field ◽  
Triplet States ◽  
Matrix Elements ◽  
The Matrix ◽  
Asymmetric Rotor ◽  
Magnetic Tuning

Intermediate field theory is used to obtain the matrix elements which determine the action of a homogeneous magnetic field on the energy levels of triplet states of asymmetric rotor molecules. Applications of these formulas are discussed (i) in relation to the Zeeman effect on the rotational fine structure of triplet–singlet transitions, where conditions are identified under which individual lines remain unbroadened by the field, and (ii) in connection with the magnetic tuning of singlet–triplet resonance.

Transformation of twinnedNi52.0Mn24.4Ga23.6martensite in a rotating magnetic field: Theory and experiment

2010 ◽  
Vol 81 (22) ◽  
Author(s):  
C. P. Sasso ◽  
V. A. L’vov ◽  
V. A. Chernenko ◽  
J. M. Barandiaran ◽  
M. Pasquale ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
Rotating Magnetic Field ◽  
Theory And Experiment
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