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http://dx.doi.org/10.3795/KSME-A.2006.30.4.420

A Study on the Measurement of Fracture Resistance Characteristics for Steam Generator Tubes  

Chang Yoon-Suk (성균관대학교 기계공학부)
Huh Nam-Su (성균관대학교 기계공학부)
Ahn Min-Yong (성균관대학교 기계공학부)
Hwang Seong-Sik (한국원자력연구소)
Kim Joung-Soo (한국원자력연구소)
Kim Young-Jin (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.30, no.4, 2006 , pp. 420-427 More about this Journal
Abstract
The structural and leakage integrity of steam generator tubes should be sustained against all postulated loads even if a crack is present. During the past three decades, most of the efforts with respect to integrity evaluation of steam generator tubes have been focused on limit load solutions but, recently, the applicability of elastic-plastic fracture mechanics was examined cautiously due to its effectiveness. The purpose of this paper is to introduce a testing method to estimate fracture resistance characteristics of steam generator tubes with a through-wall crack. Due to limited thickness and diameter, inevitably, the steam generator tubes themselves were tested instead of standard specimen or alternative ones. Also, a series of three dimensional elastic-plastic finite element analyses were carried out to derive closed-form estimation equations with respect to J-integral and crack extension for direct current potential drop method. Since the effectiveness of $J_{IC}$ as well as J-R curves was proven through comparison with those of standard specimens taken from pipes, it is believed that the proposed scheme can be utilized as an efficient tool for integrity evaluation of cracked steam generator tubes.
Keywords
Burst Pressure; DCPD Method; Finite Element Analysis; J-R curve; Steam Generator Tube;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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