Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending

Chul Goo Kim; Kyung Dong Bae; Yun Jae Kim; Young Jin Oh; Peter J. Budden

doi:10.1016/j.engfracmech.2015.06.022

Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending

Chul Goo Kim, Kyung Dong Bae, Yun Jae Kim, Young Jin Oh, Peter J. Budden

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

This paper proposes J-integral and crack opening displacement (COD) estimation equations based on the reference stress method for circumferential through-wall cracked elbows under in-plane bending. For best estimates of J and COD, an optimized reference load, used to define the reference stress, is given. The proposed equations are compared with detailed finite element results. They are further validated against eight published full-scale pipe test data. Comparison of crack initiation and maximum loads shows good agreement.

Original language	English
Pages (from-to)	303-317
Number of pages	15
Journal	Engineering Fracture Mechanics
Volume	142
DOIs	https://doi.org/10.1016/j.engfracmech.2015.06.022
Publication status	Published - 2015 Jan 1
Externally published	Yes

Keywords

Circumferential through-wall crack
Crack opening displacement
Elbow
Experimental validation
J-integral
Leak-before-break
Optimized reference load
Reference stress method

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending",

abstract = "This paper proposes J-integral and crack opening displacement (COD) estimation equations based on the reference stress method for circumferential through-wall cracked elbows under in-plane bending. For best estimates of J and COD, an optimized reference load, used to define the reference stress, is given. The proposed equations are compared with detailed finite element results. They are further validated against eight published full-scale pipe test data. Comparison of crack initiation and maximum loads shows good agreement.",

keywords = "Circumferential through-wall crack, Crack opening displacement, Elbow, Experimental validation, J-integral, Leak-before-break, Optimized reference load, Reference stress method",

author = "Kim, {Chul Goo} and Bae, {Kyung Dong} and Kim, {Yun Jae} and Oh, {Young Jin} and Budden, {Peter J.}",

year = "2015",

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doi = "10.1016/j.engfracmech.2015.06.022",

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journal = "Engineering Fracture Mechanics",

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T1 - Reference stress based J and COD estimation of circumferential through-wall cracked elbows under in-plane bending

AU - Kim, Chul Goo

AU - Bae, Kyung Dong

AU - Kim, Yun Jae

AU - Oh, Young Jin

AU - Budden, Peter J.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper proposes J-integral and crack opening displacement (COD) estimation equations based on the reference stress method for circumferential through-wall cracked elbows under in-plane bending. For best estimates of J and COD, an optimized reference load, used to define the reference stress, is given. The proposed equations are compared with detailed finite element results. They are further validated against eight published full-scale pipe test data. Comparison of crack initiation and maximum loads shows good agreement.

AB - This paper proposes J-integral and crack opening displacement (COD) estimation equations based on the reference stress method for circumferential through-wall cracked elbows under in-plane bending. For best estimates of J and COD, an optimized reference load, used to define the reference stress, is given. The proposed equations are compared with detailed finite element results. They are further validated against eight published full-scale pipe test data. Comparison of crack initiation and maximum loads shows good agreement.

KW - Circumferential through-wall crack

KW - Crack opening displacement

KW - Elbow

KW - Experimental validation

KW - J-integral

KW - Leak-before-break

KW - Optimized reference load

KW - Reference stress method

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JO - Engineering Fracture Mechanics

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