Magnetically controlled morphology of short ferromagnetic fibres in viscous fluids

Nowadays, short fiber composites are frequently used because of their easy processing possibilities, commercial availability and high freedom in design. In addition to the improved mechanical properties (strength and stiffness), optimization is also possible in both electrical and thermal conductivity, the adaptive and functional material properties. The novelty in this research is to manipulate fiber orientation and fiber density by applying magnetic fields. The research into the fiber kinetics of short fibers dispersed in viscous fluids under the influence of a magnetic field, is the first important step within the doctoral research. Next to the fiber kinetics, the determining factors in the process are brought together and their mutual influence is investigated. The matrix viscosity, magnetic field strength, fiber type and fiber geometry are among the most important parameters. Numerical and experimental research is carried out within the doctoral research, in order to achieve a fiber morphology towards optimal structural performance at the composite level, or optimized shielding properties for electromagnetic radiation. At a later stage, the options for the manipulation of fiber orientation with complex geometries are examined.