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Design of Arbitrary Magnetic Patterns on Magnetic Polymer Composite Objects: A Finite Element Modelling Tool.

Pedro González-Losada¹, Marco Martins¹, Elvira Paz¹

¹International Iberian Nanotechnology Laboratory, 4700-300 Braga, Portugal.

|September 23, 2022

Summary

A new finite element model enables custom magnetic patterns on polymer composites for advanced magnetic sensors. This innovation offers a cost-effective and flexible alternative to traditional permanent magnets in sensing systems.

Keywords:

finite element method magnetic polymer composite magnetic sensor magnetization

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Area of Science:

Materials Science
Engineering
Physics

Background:

Magnetic sensor systems rely on magnetic field generators.
Permanent magnets are common but difficult to shape.
Magnetic polymer composites (MPCs) offer a flexible alternative.

Purpose of the Study:

To develop a finite element model for designing complex magnetization patterns in MPCs.
To enable custom field generators for magnetic sensing applications.

Main Methods:

Finite element modeling in COMSOL Multiphysics.
Incorporation of part geometry and material magnetic properties.
Consideration of magnet properties and surrounding elements during magnetization.

Main Results:

The model accurately predicts magnetization patterns in MPCs at various temperatures.
It allows for the design of complex shapes and magnetization for polymer-based field generators.

Conclusions:

The developed model facilitates the creation of novel polymeric parts for magnetic sensing.
This approach provides a versatile and cost-effective solution compared to permanent magnets.