Influence of loading frequency on fatigue behavior of high strength steel

Nu Yan, Q. Y. Wang, Q. Chen, J. J. Sun

Research output: Contribution to journalConference articlepeer-review

Abstract

In order to investigate the influence of loading frequency on the fatigue behaviors of the high strength steel, ultrasonic fatigue tests were carried out for a high-carbon-chromium steel and the results were compared with those of fatigue tests using conventional rotary bending fatigue test machine with a frequency of 52.5Hz. The different of fatigue strength at ultrasonic frequency level and conventional frequency level is very small and the S-N curve obtained from 20 kHz or 52.5 Hz shows the step-wise shape. The fatigue crack occurred from inclusions on the subsurface site in the long life regime and the typical surface fracture occurred in the short life one though the loading frequency level is different. It is indicated that ultrasonic fatigue method is an effective method to investigate the fatigue properties in super-long life region.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalKey Engineering Materials
Volume353-358
Issue numberPART 1
Publication statusPublished - Nov 19 2007
Externally publishedYes
EventAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
Duration: Nov 22 2006Nov 25 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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