Abstract
This paper presents the behaviour of fatigue damage extraction in fatigue strain histories of automotive components using the probabilistic approach. This is a consideration for the evaluation of fatigue damage extraction in automotive components under service loading that is vital in a reliability analysis. For the purpose of research work, two strain signals data are collected from a car coil spring during a road test. The fatigue strain signals are then extracted using the wavelet transform in order to extract the high amplitude segments that contribute to the fatigue damage. At this stage, the low amplitude segments are removed because of their minimal contribution to the fatigue damage. The fatigue damage based on all extracted segments is calculated using some significant strain-life models. Subsequently, the statistics-based Weibull distribution is applied to evaluate the fatigue damage extraction. It has been found that about 70% of the probability of failure occurs in the 1.0 x 10-5 to 1.0 x 10-4 damage range for both signals, while 90% of the probability of failure occurs in the 1.0 x 10-4 to 1.0 x 10-3 damage range. Lastly, it is suggested that the fatigue damage can be determined by the Weibull distribution analysis
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Article history
- ReceivedUntil the next stage: 62 days
- RevisedUntil the next stage: 7 days
- AcceptedUntil the next stage: 179 days
- Published
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Copyright © 2018 Mohd Faridz Mod Yunoh, Shahrum Abdullah, Mohamad Hanif Md. Saad, Zulkifli Mohd Nopiah, Mohd Zaki Nuawi, Salvinder Singh Karam Singh.
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