A novel high-frequency fatigue testing methodology for small thin-walled structures in the HCF/VHCF regime

Florian Himmelbauer*, Michael Tillmanns, Gerhard Winter, Florian Grün, Constantin Kiesling

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

A novel high-frequency testing methodology for small thin-walled component-like structures is presented that enables fatigue tests up to 1e9 cycles within 7–8 days. A shaker excites the designed thin-walled (min. 0.1 mm) specimen near its resonant frequency and a non-contact relative displacement measurement allows to set a defined notch stress. Calculated and experimentally determined resonant frequencies deviate max. by −1.9%. Furthermore, vibration and temperature measurements prove the stability of the technique, no self heating of the specimen is detected. Validation tests with an X5CrNiCuNb16-4 steel show a typical S-N behaviour for this material, whereby cracks always appear in the intended notch.

Originalspracheenglisch
Aufsatznummer106146
Seitenumfang10
FachzeitschriftInternational Journal of Fatigue
Jahrgang146
Frühes Online-Datum19 Jan 2021
DOIs
PublikationsstatusVeröffentlicht - Mai 2021

ASJC Scopus subject areas

  • !!Mechanics of Materials
  • !!Mechanical Engineering
  • !!Materials Science(all)
  • !!Industrial and Manufacturing Engineering
  • !!Modelling and Simulation

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