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Master Thesis; Effects of magnetic additives in 3D printing filaments

Linköping, Sweden
Emir Acar
Erik Söderström
Closing date
19 November 2020 Apply for this job!


Additive manufacturing makes it possible to build complex design solutions and even create new materials with tailor-made characteristics. The capability of a material to absorb electromagnetic waves depends, among other things, on two basic electromagnetic properties: its electrical conductivity and its relative permeability. Thus, to optimise a material’s electromagnetic absorption, one can mix the original material with additives that have higher values for either of those two properties. Previous studies have mainly investigated the effects of mixing an isolating 3D printing plastic filament with conductive additives, which led to the successful creation of an electrically conductive composite filament. However, adding magnetic additives to a filament has not yet been studied to the same degree.

Description of the master thesis

This Master Thesis is primarily a theoretical study with the purpose of modelling and simulating the effects of magnetic additives on the electromagnetic properties of a composite filament via micro modelling as well as homogenisation using existing CEM software. A visit to a manufacturer of filaments is also included with the ultimate goal of, in best case, the manufacturing of the magnetic filament. Afterwards, the design, 3D printing and measurement on a simple test sample will follow.

Your profile

This Master Thesis is suitable for one student with interest in numerical simulations, materials science and electromagnetics. Experience and understanding of numerical simulations within electromagnetics are necessary. Experience of additive manufacturing is beneficial but not required. Examples of the degree studied towards include, but are not limited to, Applied Physics or Electrical Engineering.

You need to be able to work both independent and as a team member. You should be able to express yourself in speech and writing in English.

What you will be a part of

The section is responsible for the technology area Survivability, which refers to a system’s own protection in the form of tactical behaviour, signature adaptation; own emissions, battle damage resistance, CBRN protection and protection against electromagnetic weapons and lasers.

Major tasks include evaluation of survivability characteristics and trade-offs against other properties, verification of survivability properties through analysis and measurement, and development of methodology and tools for analysis of survivability concepts and design of new signature materials. Additive manufacturing is an active area of ongoing research.

Contact information

Erik Söderström, Manager

073-418 0164

Erik Sandlund, Master Thesis Supervisor


If you aspire to help create and innovate whilst developing yourself in a challenging team setting, Saab may well have the perfect conditions for you to grow. We pride ourselves on a nurturing environment, where everyone is different yet we share the same goal – to help protect people