Strain signal characterisation using the 4 th order of daubechies wavelet transform for fatigue life determination

A. A.A. Rahim, S. S.K. Singh, S. Abdullah, Mohd. Zaki Nuawi

Research output: Contribution to journalArticle

Abstract

This paper presents the significance of Discrete Wavelet Transform to provide more accuracy by using the Wavelet (Db4) Daubechies approach to analyse original signals obtained from the actual responses of an automotive suspension system. The time-frequency domain considers both time and frequency parameters, making this approach more efficient compared to the time domain and frequency domain approaches. An original signal was obtained from three road types: highway road, rural road and residential road. These signals were classified into 12 levels of decomposition where each level contained its own frequency range. The decomposed signals were then analysed using fatigue analysis to obtain the fatigue damage at each interval, which was then compared to the original signal. Results show that the decomposition signals from levels 1 to level 2 for highway and residential roads and level 1 to level 3 for rural roads gave a significant value of fatigue life located in the range of 2:1 and 1:2 in the fatigue life prediction graph. In summary, the Daubechies (Db4) Wavelet approach is capable of correlating the fatigue life of those components that contribute to the failure of a suspension system.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalInternational Journal of Integrated Engineering
Volume10
Issue number5
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Wavelet transforms
Fatigue of materials
Rural roads
Suspensions
Decomposition
Discrete wavelet transforms
Fatigue damage

Keywords

  • Decomposition
  • Discrete wavelet transform
  • Fatigue analysis
  • Time-frequency domain

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science (miscellaneous)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Strain signal characterisation using the 4 th order of daubechies wavelet transform for fatigue life determination . / Rahim, A. A.A.; Singh, S. S.K.; Abdullah, S.; Nuawi, Mohd. Zaki.

In: International Journal of Integrated Engineering, Vol. 10, No. 5, 01.01.2018, p. 21-25.

Research output: Contribution to journalArticle

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