Paper Title:
Assessment of Fatigue Life for High-Temperature Pipeline Welds Using X-Ray Diffraction Technique
  Abstract

The objective of this study is to examine the feasibility of the X-ray diffraction method for the fatigue life assessment of high-temperature steel pipes used for main steam pipelines, re-heater pipelines and headers etc. in power plants. In this study, X-ray diffraction tests were performed on the specimens simulated for low cycle fatigue damage, in order to estimate fatigue properties at the various stages of fatigue life. As a result of X-ray diffraction tests, it was confirmed that the full width at the half maximum (FWHM) decreased with an increase in the fatigue life ratio, and that the FWHM and the residual stress due to fatigue damage were algebraically linearly related to the fatigue life ratio. From this relationship, a direct assessment of the remaining fatigue life was feasible.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
130-133
DOI
10.4028/www.scientific.net/KEM.353-358.130
Citation
K. B. Yoo, J. H. Kim, "Assessment of Fatigue Life for High-Temperature Pipeline Welds Using X-Ray Diffraction Technique", Key Engineering Materials, Vols. 353-358, pp. 130-133, 2007
Online since
September 2007
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Price
$32.00
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