Compression of strain load history using holder exponents of continuous wavelet transform

C. H. Chin, Shahrum Abdullah, S. S.K. Singh, D. Schramm, Ahmad Kamal Ariffin Mohd Ihsan, N. N.M. Nasir

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

Abstract

This paper presents the compression of strain loading time history of automobile suspension spring by extracting singularities in the signal using Lipschitz regularity analysis. Time histories of suspension spring always contained redundant data that increase the size of the signal and are insignificant to durability analysis. Excessive signal data will cause the analysis to be time consuming and computationally expensive. Hence, elimination of insignificant data is important to improve the efficiency of durability analysis. A strain signal was captured from a suspension spring of a sedan car and analysed with continuous wavelet transform to identify the modulus maxima lines. Holder exponents of each singular point were estimated from the log-log plot of modulus maxima lines. The extracted singularities was compressed and compared against the original signal the determine durability and were compared statistical to determine the characteristics of the signal. A conventional time-domain-based fatigue data editing technique had been performed to compare the effectiveness of Lipschitz-based technique. Results showed that the Lipschitz-based edited signal was only quarter of the original signal length that could retain 100% of fatigue damage of the original signal with less than 5% of difference when compared in terms global statistics. Lipschitz-based technique had outperformed the time-domain-based technique which had shown unacceptable deviations in global statistics. This suggested that the Lipschitz-based singularities extracted using Lipschitz regularity analysis can sufficiently represent a strain loading history without compromising the data behaviours.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018
EditorsMagd Abdel Wahab
PublisherPleiades Publishing
Pages258-272
Number of pages15
ISBN (Print)9789811304101
DOIs
Publication statusPublished - 1 Jan 2019
Event7th International Conference on Fracture Fatigue and Wear, FFW 2018 - Ghent, Belgium
Duration: 9 Jul 201810 Jul 2018

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference7th International Conference on Fracture Fatigue and Wear, FFW 2018
CountryBelgium
CityGhent
Period9/7/1810/7/18

Fingerprint

Wavelet transforms
Loads (forces)
Durability
Suspensions
Automobile suspensions
Statistics
Fatigue damage
Compaction
Railroad cars
Fatigue of materials

Keywords

  • Continuous wavelet transform
  • Durability
  • Holder exponents
  • Singularities
  • Suspension spring

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Chin, C. H., Abdullah, S., Singh, S. S. K., Schramm, D., Mohd Ihsan, A. K. A., & Nasir, N. N. M. (2019). Compression of strain load history using holder exponents of continuous wavelet transform. In M. Abdel Wahab (Ed.), Proceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018 (pp. 258-272). (Lecture Notes in Mechanical Engineering). Pleiades Publishing. https://doi.org/10.1007/978-981-13-0411-8_24

Compression of strain load history using holder exponents of continuous wavelet transform. / Chin, C. H.; Abdullah, Shahrum; Singh, S. S.K.; Schramm, D.; Mohd Ihsan, Ahmad Kamal Ariffin; Nasir, N. N.M.

Proceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018. ed. / Magd Abdel Wahab. Pleiades Publishing, 2019. p. 258-272 (Lecture Notes in Mechanical Engineering).

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

Chin, CH, Abdullah, S, Singh, SSK, Schramm, D, Mohd Ihsan, AKA & Nasir, NNM 2019, Compression of strain load history using holder exponents of continuous wavelet transform. in M Abdel Wahab (ed.), Proceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018. Lecture Notes in Mechanical Engineering, Pleiades Publishing, pp. 258-272, 7th International Conference on Fracture Fatigue and Wear, FFW 2018, Ghent, Belgium, 9/7/18. https://doi.org/10.1007/978-981-13-0411-8_24
Chin CH, Abdullah S, Singh SSK, Schramm D, Mohd Ihsan AKA, Nasir NNM. Compression of strain load history using holder exponents of continuous wavelet transform. In Abdel Wahab M, editor, Proceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018. Pleiades Publishing. 2019. p. 258-272. (Lecture Notes in Mechanical Engineering). https://doi.org/10.1007/978-981-13-0411-8_24
Chin, C. H. ; Abdullah, Shahrum ; Singh, S. S.K. ; Schramm, D. ; Mohd Ihsan, Ahmad Kamal Ariffin ; Nasir, N. N.M. / Compression of strain load history using holder exponents of continuous wavelet transform. Proceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018. editor / Magd Abdel Wahab. Pleiades Publishing, 2019. pp. 258-272 (Lecture Notes in Mechanical Engineering).
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