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

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number106146
Number of pages10
JournalInternational Journal of Fatigue
Volume146
Early online date19 Jan 2021
DOIs
Publication statusPublished - May 2021

Keywords

  • Component testing
  • Fatigue test methods
  • HCF/VHCF
  • High frequency testing
  • Thin-walled structures

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'A novel high-frequency fatigue testing methodology for small thin-walled structures in the HCF/VHCF regime'. Together they form a unique fingerprint.

Cite this