Accelerated fatigue tests of BS 080A42 steel using the WBE mission loadings

Research output: Contribution to journalArticle

Abstract

This paper describes the laboratory accelerated fatigue tests of BS 080A42 steel using the shortened variable amplitude (VA) loading produced by the Wavelet Bump Extraction (WBE) algorithm. In this study, a VA strain loading which was measured on the lower suspension arm of a vehicle while driven over a pavé road surface was used. The WBE shortened loading was validated based on the fatigue life comparison to the original loading using four strain-life fatigue damage models. Experimental fatigue tests were performed using a cylindrical shape specimen with the 6-mm gauge length smooth surface made from BS 080A42 steel. The experimental findings showed that the fatigue tests were accelerated from 78.8 hours to 32.5 hours, preserving at least 99% of the original fatigue damage in the mission loadings. Finally, it is suggested that the WBE algorithm is suitable for the application of automotive accelerated fatigue tests.

Original languageEnglish
Pages (from-to)1023-1026
Number of pages4
JournalKey Engineering Materials
Volume326-328 II
Publication statusPublished - 2006

Fingerprint

Steel
Fatigue of materials
Fatigue damage
Gages
Suspensions

Keywords

  • Accelerated tests
  • Fatigue
  • Fatigue data editing
  • Mission loading
  • WBE

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

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abstract = "This paper describes the laboratory accelerated fatigue tests of BS 080A42 steel using the shortened variable amplitude (VA) loading produced by the Wavelet Bump Extraction (WBE) algorithm. In this study, a VA strain loading which was measured on the lower suspension arm of a vehicle while driven over a pav{\'e} road surface was used. The WBE shortened loading was validated based on the fatigue life comparison to the original loading using four strain-life fatigue damage models. Experimental fatigue tests were performed using a cylindrical shape specimen with the 6-mm gauge length smooth surface made from BS 080A42 steel. The experimental findings showed that the fatigue tests were accelerated from 78.8 hours to 32.5 hours, preserving at least 99{\%} of the original fatigue damage in the mission loadings. Finally, it is suggested that the WBE algorithm is suitable for the application of automotive accelerated fatigue tests.",
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