Investigation of the effect of printing parameters on the coefficient of thermal expansion of additively manufactured structures

vor 3 Wochen


Braunschweig, Deutschland Deutsches Zentrum für Luft- und Raumfahrt (DLR) Vollzeit

Steigen Sie ein in die faszinierende Welt des Deutschen Zentrums für Luft- und Raumfahrt (DLR), um mit Forschung und Innovation die Zukunft mitzugestalten Mit dem Know-how und der Neugier unserer 11.000 Mitarbeitenden aus 100 Nationen sowie unserer einzigartigen Infrastruktur, bieten wir ein spannendes und inspirierendes Arbeitsumfeld. Gemeinsam entwickeln wir nachhaltige Technologien und tragen so zur Lösung globaler Herausforderungen bei. Möchten Sie diese große Zukunftsaufgabe mit uns zusammen angehen? Dann ist Ihr Platz bei uns

Für unser Institut für Systemleichtbau in Braunschweig suchen wir eine/n Investigation of the effect of printing parameters on the coefficient of thermal expansion of additively manufactured structures, Student in mechanical / process / materials / … engineering or similar (f/m/x)

Das erwartet Sie:

Metamaterials – i.e. materials with unusual properties – show the potential to have a major impact on a wide variety of technical applications. To produce these metamaterials, it is often necessary to manipulate material properties in a targeted manner. For example, at the Institute of Lightweight Systems, acoustic and mechanical metamaterials are currently being investigated, which require a targeted adjustment of the coefficient of thermal expansion (CTE).

For this purpose, additive extrusion processes are used, which already produce direction-dependent material properties due to the generation of individual beads. By altering the printing parameters, even for unreinforced polymers this anisotropic effect can be amplified or used for targeted adjustment.

Your task will be to identify these printing parameters and to experimentally determine the effect of their adjustment on the relevant material properties (especially on CTE). To do this, it will be necessary, among other things, to conceive different printing strategies, to carry out the print jobs and to set up a suitable evaluation procedure for in-process CTE determination.

Depending on the desired scope, the assignment can be extended to include further investigations in the field of acoustic and/or mechanical metamaterials. On the one hand, the previously gained knowledge can be used to design tunable acoustic metamaterials for desired frequency band sound attenuation under lightweight requirements. On the other hand, in the mechanical field the aim is to design printable lattice structures with adjustable CTE that can mitigate process-induced distortions in additive functionalization processes.

This thesis is preferably started after an introductory internship or student assistantship.

Das erwarten wir von Ihnen:
  • student in mechanical / process / materials / … engineering or similar
  • basic understanding of polymer mechanics
  • affinity to 3D printing beneficial
  • fun in experimental work
  • ability to work independently
  • good English speaking and writing, German skills beneficial
Unser Angebot:

Das DLR steht für Vielfalt, Wertschätzung und Gleichstellung aller Menschen. Wir fördern eigenverantwortliches Arbeiten und die individuelle Weiterentwicklung unserer Mitarbeitenden im persönlichen und beruflichen Umfeld. Dafür stehen Ihnen unsere zahlreichen Fort- und Weiterbildungsmöglichkeiten zur Verfügung. Chancengerechtigkeit ist uns ein besonderes Anliegen, wir möchten daher insbesondere den Anteil von Frauen in der Wissenschaft und Führung erhöhen. Bewerbungen schwerbehinderter Menschen bevorzugen wir bei fachlicher Eignung.

Weitere Angaben:
  • Eintrittsdatum: sofort
  • Dauer: min. 3 months
  • Vergütung: nach Vereinbarung
  • Kennziffer: 88849


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