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.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Shafiullah, A.K.M., Wu, C.Q.: Generation and validation of loading profiles for highly accelerated durability tests of ground vehicle components. Eng. Fail. Anal. 33, 1–16 (2013)
Abdullah, S., Nizwan, C.K.E., Nuawi, M.Z.: A study of fatigue data editing using the Short-Time Fourier Transform (STFT). Am. J. Appl. Sci. 6(4), 565–575 (2009)
Pratumnopharat, P., Leung, P.S., Court, R.S.: Extracting fatigue damage parts from the stress–time history of horizontal axis wind turbine blades. Renew. Energy 58, 115–126 (2013)
Kadhim, N.A., Abdullah, S., Ariffin, A.K.: Effect of the fatigue data editing technique associated with finite element analysis on the component fatigue design period. Mater. Des. 32(2), 1020–1030 (2011)
Xiong, J.J., Shenoi, R.: A load history generation approach for full-scale accelerated fatigue tests. Eng. Fract. Mech. 75(10), 3226–3243 (2008)
Pratumnopharat, P., Leung, P.S., Court, R.S.: Wavelet transform-based stress-time history editing of horizontal axis wind turbine blades. Renew. Energy 63, 558–575 (2014)
Putra, T.E., Abdullah, S., Schramm, D., Nuawi, M.Z., Bruckmann, T.: Reducing cyclic testing time for components of automotive suspension system utilising the wavelet transform and the Fuzzy C-Means. Mech. Syst. Sig. Process. 90, 1–14 (2017)
Amin, W., Davis, M.R., Thomas, G.A., Holloway, D.S.: Analysis of wave slam induced hull vibrations using continuous wavelet transforms. Ocean Eng. 58, 154–166 (2013)
Venkatakrishnan, P., Sangeetha, S., Gnanasekaran, J.S., Vishnukumar, M.G., Padmanaban, A.S.: Analysis of Vibration in gearbox sensor data using Lipschitz Exponent (LE) function: a Wavelet approach. IFAC Proc. Vol. 47(1), 1067–1071 (2014)
Zhang, H., Yu, X., Liu, B., Wu, Y., Li, Y.: Using wavelets to study spike-type compressor rotating stall inception. Aerosp. Sci. Technol. 58, 467–479 (2016)
Putra, T.E., Abdullah, S., Schramm, D., Nuawi, M.Z., Bruckmann, T.: Generating strain signals under consideration of road surface profiles. Mech. Syst. Sig. Process. 60–61, 485–497 (2015)
Acknowledgements
This work acknowledges the financial support from Universiti Kebangsaan Malaysia (UKM) through Young Research’s Grant with grant no. GGPM-2017-057.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Chin, C.H., Abdullah, S., Singh, S.S.K., Schramm, D., Ariffin, A.K., Nasir, N.N.M. (2019). Compression of Strain Load History Using Holder Exponents of Continuous Wavelet Transform. In: Abdel Wahab, M. (eds) Proceedings of the 7th International Conference on Fracture Fatigue and Wear. FFW 2018. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0411-8_24
Download citation
DOI: https://doi.org/10.1007/978-981-13-0411-8_24
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0410-1
Online ISBN: 978-981-13-0411-8
eBook Packages: EngineeringEngineering (R0)