Paper Title:
Condition Identification of Bolted Joints Based on Wavelet Analysis
  Abstract

In this paper, discrete wavelet transform (DWT) is used to analyze the acceleration signals near to the loose bolt, in order to study the characteristics of bolted joint condition. Firstly, an experimental system is built based on the NI data acquisition equipment. Secondly, based on qualitative analysis of the loose process of the bolted joints and spectrum analysis of response signals, an appropriate wavelet function is chosen and decomposed levels are determined. Lastly, according to the amplitude of each level, the contour diagrams are drawn and the Root Mean Square (RMS) of detailed coefficients at the sensitive level is calculated. Experimental result shows that both DWT contour diagrams and RMS at sensitive level have significant difference when preload changes.

  Info
Periodical
Chapter
Chapter 6: Engineering Mechanics and Application
Edited by
Di Zheng, Yiqiang Wang, Yi-Min Deng, Aibing Yu and Weihua Li
Pages
1109-1113
DOI
10.4028/www.scientific.net/AMM.101-102.1109
Citation
H. R. Yan, G. Y. Zeng, D. F. Zhao, M. Z. Tian, "Condition Identification of Bolted Joints Based on Wavelet Analysis", Applied Mechanics and Materials, Vols. 101-102, pp. 1109-1113, 2012
Online since
September 2011
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Price
$32.00
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