Brunel University Research Archive (BURA) >
Research Areas >
Design >

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/1268

Title: Bump extraction algorithm for variable amplitude fatigue loading
Authors: Abdullah, S
Choi, JC
Giacomin, J
Yates, JR
Keywords: Fatigue data editing
Mission
Wavelet
Bump
Variable amplitude
Publication Date: 2006
Publisher: Elsevier
Citation: International Journal of Fatigue 28(7): 675-691, Jul 2006
Abstract: This paper presents the development of a fatigue mission synthesis algorithm, called Wavelet Bump Extraction (WBE), for summarising long records of fatigue road load data. This algorithm is used to extract fatigue damaging events or bumps in the record that cause the majority of the fatigue damage, whilst preserving the load cycle sequences. Bumps are identified from characteristic frequency bands in the load spectrum using the 12th order Daubechies wavelet. The bumps are combined to produce a mission signal which has equivalent signal statistics and fatigue damage to the original signal. The WBE accuracy has been evaluated by observing the cycle sequence effects of the bump loadings. The WBE was compared with the time domain fatigue data editing method, so that the effectiveness of WBE can be verified. Using WBE, a substantial compression of the load-time history could be achieved for the purpose of accelerated fatigue tests in the automotive industry.
URI: www.elsevier.com/locate/ijfatigue
http://bura.brunel.ac.uk/handle/2438/1268
ISSN: 0142-1123
Appears in Collections:Design
Dept of Design Research Papers

Files in This Item:

File Description SizeFormat
acgy2006bea.pdf1.49 MBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.