Paper Title:
Assessment of Fatigue Life for High-Temperature Pipeline Welds by Non-Destructive Method
  Abstract

The objective of this study is to estimate the feasibility of X-ray diffraction method application for fatigue life assessment of the high-temperature pipeline steel such as main steam pipe, re-heater pipe and header etc. in power plant. In this study, X-ray diffraction tests using various types of specimen simulated low cycle fatigue damage were performed in order to analyze fatigue properties when fatigue damage conditions become various stages such as 1/4, 1/2 and 3/4 of fatigue life, respectively. As a result of X-ray diffraction tests for specimens simulated fatigue damages, we conformed that the variation of the full width at half maximum intensity decreased in proportion to the increase of fatigue life ratio. And also, the ratio of the full width at half maximum intensity due to fatigue damage has linear relationship with fatigue life ratio algebraically. From this relationship, it was suggested that direct expectation of the life consumption rate was feasible.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
497-500
DOI
10.4028/www.scientific.net/KEM.326-328.497
Citation
K. B. Yoo, H. S. Choi, E. H. Kim, S. Y. Cho, J. H. Kim, "Assessment of Fatigue Life for High-Temperature Pipeline Welds by Non-Destructive Method", Key Engineering Materials, Vols. 326-328, pp. 497-500, 2006
Online since
December 2006
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Price
$32.00
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