Paper Title:
Plastic Limit Load Solutions for Surface Crack in the Steam Generator Tubes
  Abstract

Operating experience of steam generators has shown that cracks of various morphologies frequently occur in the steam generator tubes. These cracked tubes can stay in service if it is proved that the tubes have sufficient safety margin to preclude the risk of burst and leak. Therefore, integrity assessment using exact limit load solutions is very important for safe operation of the steam generators. This paper provides global and local limit load solutions for surface cracks in the steam generator tubes. Such solutions are developed based on three-dimensional (3-D) finite element analyses assuming elastic-perfectly plastic material behavior. For the crack location, both axial and circumferential surface cracks, and for each case, both external and internal cracks are considered. The resulting global and local limit load solutions are given in polynomial forms, and thus can be simply used in practical integrity assessment of the steam generator tubes, because the comparison between experimental data and FE solutions shows good agreement.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
1704-1712
DOI
10.4028/www.scientific.net/KEM.297-300.1704
Citation
O. S. Lee, H. S. Kim, J. S. Kim, T. E. Jin, H. D. Kim, H. S. Chung, "Plastic Limit Load Solutions for Surface Crack in the Steam Generator Tubes ", Key Engineering Materials, Vols. 297-300, pp. 1704-1712, 2005
Online since
November 2005
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Price
$32.00
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