Paper Title:
Research on Flaw Detection for 3-D Braided Composite Material Using Ultrasonic Testing Based on Wavelet Packet Transform
  Abstract

A method used to recognize the inner defects of 3-D braided composite materials is discussed. Firstly, the link between UT signals and the defects of 3-D braided composite material is analyzed. Then, the wavelet packet transform is used to process the ultrasonic scanning pulse signals of the defects. The characteristic quantities of signal are extracted into the BP neural network as samples. Through training the BP neural network, the recognize system of micro-cracks and pores is achieved. Finally, according to the results of experiment this classification system based on wavelet packet transform is proved to be feasible.

  Info
Periodical
Advanced Materials Research (Volumes 146-147)
Edited by
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
Pages
394-399
DOI
10.4028/www.scientific.net/AMR.146-147.394
Citation
X. L. He, C. Liu, "Research on Flaw Detection for 3-D Braided Composite Material Using Ultrasonic Testing Based on Wavelet Packet Transform", Advanced Materials Research, Vols. 146-147, pp. 394-399, 2011
Online since
October 2010
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Price
$32.00
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