Engineering J estimation methods for leak-before-break analyses of nuclear piping

Yun-Jae Kim, Nam S. Huh, Young J. Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The present work presents a method to estimate elastic-plastic J for circumferential through-wall cracked pipes for the Leak-Before-Break (LBB) analysis of pressurized piping. The proposed method is based on the GE/EPRI approach and the key issue is to propose a robust Ramberg-Osgood fitting procedure. Two different estimation schemes are given, one for the case when full stress-strain data are available, and the other for the case when only yield and ultimate tensile strengths are available. The proposed J estimates are compared with those from extensive elastic-plastic finite element (FE) analyses. Experimental validation is also performed by comparing maximum moments predicted by fracture mechanics analysis using the proposed J estimates with those from full-scale pipe test. Both results show sufficient confidence in the accuracy of the proposed J estimates.

Original languageEnglish
Pages (from-to)41-50
Number of pages10
JournalJSME International Journal, Series A: Solid Mechanics and Material Engineering
Volume48
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

Fingerprint

Pipe
Plastics
Fracture mechanics
Tensile strength

Keywords

  • Circumferential through-wall cracked pipe
  • GE/EPRI approach
  • J-integral
  • Leak-before-break analysis

ASJC Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

Cite this

Engineering J estimation methods for leak-before-break analyses of nuclear piping. / Kim, Yun-Jae; Huh, Nam S.; Kim, Young J.

In: JSME International Journal, Series A: Solid Mechanics and Material Engineering, Vol. 48, No. 1, 01.01.2005, p. 41-50.

Research output: Contribution to journalArticle

@article{aa38f813562c4233b71fc2b42dc26793,
title = "Engineering J estimation methods for leak-before-break analyses of nuclear piping",
abstract = "The present work presents a method to estimate elastic-plastic J for circumferential through-wall cracked pipes for the Leak-Before-Break (LBB) analysis of pressurized piping. The proposed method is based on the GE/EPRI approach and the key issue is to propose a robust Ramberg-Osgood fitting procedure. Two different estimation schemes are given, one for the case when full stress-strain data are available, and the other for the case when only yield and ultimate tensile strengths are available. The proposed J estimates are compared with those from extensive elastic-plastic finite element (FE) analyses. Experimental validation is also performed by comparing maximum moments predicted by fracture mechanics analysis using the proposed J estimates with those from full-scale pipe test. Both results show sufficient confidence in the accuracy of the proposed J estimates.",
keywords = "Circumferential through-wall cracked pipe, GE/EPRI approach, J-integral, Leak-before-break analysis",
author = "Yun-Jae Kim and Huh, {Nam S.} and Kim, {Young J.}",
year = "2005",
month = "1",
day = "1",
doi = "10.1299/jsmea.48.41",
language = "English",
volume = "48",
pages = "41--50",
journal = "JSME International Journal, Series A: Solid Mechanics and Material Engineering",
issn = "1344-7912",
publisher = "Japan Society of Mechanical Engineers",
number = "1",

}

TY - JOUR

T1 - Engineering J estimation methods for leak-before-break analyses of nuclear piping

AU - Kim, Yun-Jae

AU - Huh, Nam S.

AU - Kim, Young J.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - The present work presents a method to estimate elastic-plastic J for circumferential through-wall cracked pipes for the Leak-Before-Break (LBB) analysis of pressurized piping. The proposed method is based on the GE/EPRI approach and the key issue is to propose a robust Ramberg-Osgood fitting procedure. Two different estimation schemes are given, one for the case when full stress-strain data are available, and the other for the case when only yield and ultimate tensile strengths are available. The proposed J estimates are compared with those from extensive elastic-plastic finite element (FE) analyses. Experimental validation is also performed by comparing maximum moments predicted by fracture mechanics analysis using the proposed J estimates with those from full-scale pipe test. Both results show sufficient confidence in the accuracy of the proposed J estimates.

AB - The present work presents a method to estimate elastic-plastic J for circumferential through-wall cracked pipes for the Leak-Before-Break (LBB) analysis of pressurized piping. The proposed method is based on the GE/EPRI approach and the key issue is to propose a robust Ramberg-Osgood fitting procedure. Two different estimation schemes are given, one for the case when full stress-strain data are available, and the other for the case when only yield and ultimate tensile strengths are available. The proposed J estimates are compared with those from extensive elastic-plastic finite element (FE) analyses. Experimental validation is also performed by comparing maximum moments predicted by fracture mechanics analysis using the proposed J estimates with those from full-scale pipe test. Both results show sufficient confidence in the accuracy of the proposed J estimates.

KW - Circumferential through-wall cracked pipe

KW - GE/EPRI approach

KW - J-integral

KW - Leak-before-break analysis

UR - http://www.scopus.com/inward/record.url?scp=15344344929&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15344344929&partnerID=8YFLogxK

U2 - 10.1299/jsmea.48.41

DO - 10.1299/jsmea.48.41

M3 - Article

AN - SCOPUS:15344344929

VL - 48

SP - 41

EP - 50

JO - JSME International Journal, Series A: Solid Mechanics and Material Engineering

JF - JSME International Journal, Series A: Solid Mechanics and Material Engineering

SN - 1344-7912

IS - 1

ER -