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Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS
CALLING ALL FUTURE EXPERTS IN POLYMERS! AT FRAUNHOFER MAKE THE MOST OF YOUR TALENTS BY JOINING OUR POLYMER APPLICATIONS TEAM. POSTS ARE IMMEDIATELY AVAILABLE FOR:

Bachelor thesis or Master thesis »Honeycomb Sandwich Single Cantilever Beam (SCB) Test Fracture Machnics Case Study«

Kennziffer: IMWS-2017-3
The Fraunhofer Institute for Microstructure of Materials and Systems IMWS is one of the 67 different Research institutes of the German Fraunhofer-Gesellschaft, the largest organization of applied Research in Europe. Within our department »Polymer applications« we are currently offering a topic for bachelor thesis or master thesis »Honeycomb Sandwich Single Cantilever Beam (SCB) Test Fracture Machnics Case Study«.

Was Sie mitbringen
For this task we are looking for a student field of Engineering. Previous experience and advanced knowledge is required in the following fields:
  • Finite element modelling using ABAQUS including Phyton programming
  • Application of fractures mechanics methods (VCCT)
  • Continuum mechanics modelling of anisotropic materials

The results of the study should be summarized in an bachelor thesis or master thesis and the FE model generation must be documented adequately.

Was Sie erwarten können
The Fraunhofer Institute for Microstructure of Materials and Systems IMWS in Halle, Germany, characterizes, simulates and evaluates the behaviour of materials, components and systems under mechanical and environmental loads aiming solutions to improve the safety, reliability, durability and functionality of technical components and systems.

Sandwich structures consisting of FRP face sheets and closed cell polymeric foam as well as honeycomb cores for application in aerospace, transportation and wind energy applications are a major part of the research activities for more than a decade now. Here, the mechanical and fracture mechanical characterization of the sandwich components and the sandwich structure under mechanical and environmental loads is of particular interest. Furthermore, the IMWS is working on micro- and mesomechanical investigation and modelling of damage mechanisms as well as on the development and application of advanced material charaterization and testing methods. Since 2011 Fraunhofer IMWS contributes to the international CMH-17 Sandwich Disbond Growth Task Group activities in the field of fracture mechanical testing methods and numerical sandwich component modelling, particularly regarding the specifics of low density honeycomb core sandwich with thin face sheets.

As part of an advanced Analysis Round Robin a comparison of state-of-the-art fracture mechanics models and methods for the analysis of facesheet/core disbond was started. In the course of this project a substantial subtask is the numerical modeling of the honeycomb sandwich SCB specimen by means of the commercial Finite Element code ABAQUS and fracture mechanics analysis based on the Virtual Crack Closure Technique (VCCT).

The task includes: 
  • Conception and generation of a parametric 3D solid elements FE model of the SCB specimen (honeycomb core material should be modelled as an homogenized linear elastic continuum).
  • Investigation of the effect of mesh density, element type, material properties, large deflection (facesheet) and other factors on the fracture toughness and fracture mode Separation.

Die Vergütung richtet sich nach der Gesamtbetriebsvereinbarung zur Beschäftigung der Hilfskräfte.
Die Stelle ist auf maximal 6 Monaten befristet.

Fraunhofer is Europe’s largest application-oriented research organization. Our research efforts are geared entirely to people’s needs: health, security, communication, energy and the environment. As a result, the work undertaken by our researchers and developers has a significant impact on people’s lives. We are creative. We shape technology. We design products. We improve methods and techniques. We open up new Vistas.


If you have questions concerning this job Position please contact:

Dr. Ralf Schäuble
Tel: +49 (0)345 5589-151
E-mail: ralf.schaeuble@imws.fraunhofer.de
Please apply online or send your application to the following address:

personal@imws.fraunhofer.de

Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS
Personalreferat
Walter-Hülse-Straße 1
06120 Halle (Saale)

Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS
Halle

http://www.imws.fraunhofer.de


Erschienen auf academics.de am 27.01.2017
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