Accelerated Fatigue Tests of BS 080A42 Steel Using the WBE Mission Loadings

Abstract:

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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.

Info:

Periodical:

Key Engineering Materials (Volumes 326-328)

Edited by:

Soon-Bok Lee and Yun-Jae Kim

Pages:

1023-1026

DOI:

10.4028/www.scientific.net/KEM.326-328.1023

Citation:

S. Abdullah and A. K. Ariffin, "Accelerated Fatigue Tests of BS 080A42 Steel Using the WBE Mission Loadings", Key Engineering Materials, Vols. 326-328, pp. 1023-1026, 2006

Online since:

December 2006

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Price:

$35.00

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