An Experimental Rig to Investigate Fatigue Crack Growth Under Dynamic Loading

Chee Hoe Foong, Marian Wiercigroch, William Ferguson Deans

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A novel experimental rig capable of generating a versatile dynamic loading has been designed and tested to overcome the shortcomings of conventional fatigue testing machines such as the difficulty in providing zero crossing aperiodic loading. The main principle of this new design is based on two, single degree of freedom based excited oscillators, where inertial forces act on a specially designed specimen. By changing the natural frequency of the oscillator, the extent of the preloads and pattern of the excitation signal on the shaker, the rig provides a new and robust means of fatigue testing, particularly for aperiodic loading.

Original languageEnglish
Pages (from-to)19-31
Number of pages12
JournalMeccanica
Volume38
Issue number1
DOIs
Publication statusPublished - Jan 2003

Keywords

  • fatigue
  • experimental rig
  • dynamic loading
  • longitudinal vibrations
  • beam
  • bar
  • propagation
  • cantilever

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