Selection of the optimum decomposition level using the discrete wavelet transform for automobile suspension system

Airee Afiq Abd Rahim, Shahrum Abdullah, Salvinder Singh Karam Singh, Mohammad Zaki Nuawi

Research output: Contribution to journalArticle

Abstract

This paper discusses the determination of the optimum decomposition level by using the discrete wavelet transform (DWT) method for an automobile suspension system. The DWT method has been widely adopted in signal processing analyses. For the purpose of this study, a car was driven on two types of road conditions: highway and bumpy. Strain signals were measured based on the response gained from the coil spring. These signals were decomposed into 14 levels of decomposition, in which the percentage of wavelet energy for Levels 1 through 4 were 100 % similar to the original signals for both roads. The results were evaluated by comparing the fatigue life values for each decomposition level to the original signal. Based on the comparison of both roads, levels 1 to 3 show a difference of less than 20 % in fatigue life compared to the original signal. Thus, the accuracy of wavelet-based signal processing has proven to be applied in the fatigue durability analysis for automotive applications.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalJournal of Mechanical Science and Technology
Volume34
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Fingerprint

Automobile suspensions
Discrete wavelet transforms
Fatigue of materials
Decomposition
Signal processing
Durability
Railroad cars

Keywords

  • Discrete wavelet transform
  • Fatigue analysis
  • Reliability analysis
  • Suspension system

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Selection of the optimum decomposition level using the discrete wavelet transform for automobile suspension system. / Rahim, Airee Afiq Abd; Abdullah, Shahrum; Singh, Salvinder Singh Karam; Nuawi, Mohammad Zaki.

In: Journal of Mechanical Science and Technology, Vol. 34, No. 1, 01.01.2020, p. 137-142.

Research output: Contribution to journalArticle

Rahim, Airee Afiq Abd ; Abdullah, Shahrum ; Singh, Salvinder Singh Karam ; Nuawi, Mohammad Zaki. / Selection of the optimum decomposition level using the discrete wavelet transform for automobile suspension system. In: Journal of Mechanical Science and Technology. 2020 ; Vol. 34, No. 1. pp. 137-142.
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