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

Location

München | Germany

Job description

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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 practical work in aviation as an innovative, high-tech industry
• Exciting jobs that carry responsibility and are performed in an atmosphere of team spirit
• A personally assigned contact and individual support services
• Flexible working hours and compensatory time off
• Networking opportunities

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