Paper Title:
Nondestructive Evaluation in Materials Using Time-Frequency Analysis Methods
  Abstract

Application of signal processing techniques to nondestructive evaluation (NDE) in general has become a standard tool in determining the frequency characteristics of the signals and relating these characteristics to the integrity of the structure under consideration. The joint time-frequency analysis techniques are applied to analyze ultrasonic signals in degraded austenite stainless 316 steel, to study the evaluation of damage in this material. It is demonstrated that the nonstationary characteristics of ultrasonic signals could be analyzed effectively by these methods. WVD was found to be more effective for analyzing the attenuation and frequency characteristics of degraded materials through ultrasonic. It is indicated that the time-frequency analysis methods should also be useful in evaluating various damages and defects in structural members.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
2090-2095
DOI
10.4028/www.scientific.net/KEM.297-300.2090
Citation
K. W. Nam, S. H. Ahn, J. W. Kim, "Nondestructive Evaluation in Materials Using Time-Frequency Analysis Methods ", Key Engineering Materials, Vols. 297-300, pp. 2090-2095, 2005
Online since
November 2005
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Price
$32.00
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