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Thesis: Experimental nonlinear modal analysis applied to a component test of variable guide vanes

To validate newly developed simulation tools precise and comprehensive measurements of component tests close to engine conditions are necessary. State-of-the-art predictions of high cycle fatigue (HCF) leads to amplitude dependent characteristics due to its contact mechanics, which can be captured experimentally by a nonlinear modal analysis (NMA). The current approach by MTU is based on force transducers and displacement sensors measuring the applied active power. However, a refined method was recently proposed to omit the force measurement and make its results more robust in terms of excitation level.

TASKS

  • Conception of measurement setup for a component test of a variable guide vane (VGV)
  • Development and operation of an advanced control scheme for dynamic excitation with an electro-dynamic shaker
  • Familiarization with dynamic measurements and data acquisition
  • Realization of a shaker test in order to perform a NMA
  • Evaluation and physical interpretation of your data
  • Independent verification, presentation, and documentation of results

REQUIREMENTS

  • Studies in Mechanical/Aerospace Engineering, Mechatronics, Physics, or a comparable field
  • Strong knowledge of a higher programming language (preferably Python or Matlab)
  • Basic knowledge in the field of mechanical vibrations and Finite Element Models is advantageou
  • Good English and German skills
  • Creativity, initiative and a hands on mentality, along with a willingness to address complex issues

OUR OFFER

  • Insights into the aviation industry and jobs with responsibility
  • Team spirit, e.g. through student network & events
  • Mentoring and individual support
  • Flexible working time models with mobile working
  • Canteen, café bar and sales shops
  • Sports cooperation with EGYM Wellpass & company sports groups 
  • Excellent connections thanks to commuter bus, parking garage, e-charging station 

READY?

Give your career a boost and send us your complete application (CV, Transcript of Records, High School Diploma).

We are looking forward to getting to know you!

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