Development of a Fatigue Testing System for CFRP Under Combined Cyclic and Impact Load

Christian Bärnthaler

Research output: ThesisMaster's Thesis

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Abstract

The working speed of stamping machines or similar devices is often not high enough. To increase the working speed of high speed stamping machines, it is necessary to reduce the masses of the moving parts. Due to their high stiffness and strength, carbon fibre reinforced composites seem to be ideal for this application. Typically the components are used for 20 000 h of operation. To validate the material’s fatigue strength for up to 1.5e9 cycles, a suitable testing facility is designed. Various problems like a high testing frequency, heating of the specimen and an accurate measuring system have to be considered. In the end a high frequency testing machine is designed. The functionality of the testing device is examined and reported.
Translated title of the contributionEntwicklung eines Ermüdungsprüfstandes für CFK unter kombinierter zyklischer und stoßender Belastung
Original languageEnglish
QualificationDipl.-Ing.
Supervisors/Advisors
  • Weiss, Lukas, Supervisor (external), External person
  • Grün, Florian, Supervisor (internal)
  • Mösenbacher, Andreas, Co-Supervisor (internal)
Award date27 Mar 2015
Publication statusPublished - 2015

Bibliographical note

embargoed until null

Keywords

  • CFRP
  • VHCF
  • high speed stamping machines
  • resonant resting
  • high frequency testing
  • fatigue strength CFRP

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