Vibrational fatigue analysis of a strain loading using the frequency and wavelet filtering methods

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a comparison work between the filtering methods of fatigue strain loadings using the frequency spectrum and the wavelet transform (WT), in which a raw loading signal can be simplified for purpose of simulation. For this reason, the Fast Fourier Transform (FFT) and the Morlet wavelet algorithms were used in order to transform the vibrational fatigue time series into the frequency domain signal, leading to the observation of the frequency characteristics of the signal. To retain high amplitude cycles in the FFT algorithm, a low pass filter technique was applied to remove the high frequency signals with small amplitude that are non-damaging. The departure of high frequency information smoothed the low amplitude cycles at high frequency events in the fatigue signal. The Butterworth filter was selected as the most efficient filter design as it retained most of the fatigue damage and also had the capability to remove 30 % of the original low amplitude cycles. On the other hand, the Morlet wavelet managed to remove 64 % of the original 59 second signal. This wavelet filtering method removed 34 % more than the similar procedure applied through the FFT approach. Hence, this fatigue data summarising algorithm can be used for studying the durability characteristics of automotive components.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages124-129
Number of pages6
Volume462-463
DOIs
Publication statusPublished - 2011
Event8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010 - Kuala Lumpur
Duration: 7 Jun 20109 Jun 2010

Publication series

NameKey Engineering Materials
Volume462-463
ISSN (Print)10139826

Other

Other8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010
CityKuala Lumpur
Period7/6/109/6/10

Fingerprint

Fatigue of materials
Fast Fourier transforms
Butterworth filters
Low pass filters
Fatigue damage
Wavelet transforms
Time series
Durability

Keywords

  • Fast fourier transform
  • Fatigue strain signal
  • Low pass filter
  • Wavelet coefficient

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Vibrational fatigue analysis of a strain loading using the frequency and wavelet filtering methods. / Abdullah, Shahrum; Teuku, Edisah Putra; Nuawi, Mohd. Zaki; Mohd Nopiah, Zulkifli.

Key Engineering Materials. Vol. 462-463 2011. p. 124-129 (Key Engineering Materials; Vol. 462-463).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abdullah, S, Teuku, EP, Nuawi, MZ & Mohd Nopiah, Z 2011, Vibrational fatigue analysis of a strain loading using the frequency and wavelet filtering methods. in Key Engineering Materials. vol. 462-463, Key Engineering Materials, vol. 462-463, pp. 124-129, 8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010, Kuala Lumpur, 7/6/10. https://doi.org/10.4028/www.scientific.net/KEM.462-463.124
Abdullah, Shahrum ; Teuku, Edisah Putra ; Nuawi, Mohd. Zaki ; Mohd Nopiah, Zulkifli. / Vibrational fatigue analysis of a strain loading using the frequency and wavelet filtering methods. Key Engineering Materials. Vol. 462-463 2011. pp. 124-129 (Key Engineering Materials).
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