Determination method of ramberg-osgood constants for leak before break evaluation

Kyung Dong Bae; Ho Wan Ryu; Yun Jae Kim; Jin Weon Kim; Jong Sung Kim; Young Jin Oh

doi:10.3795/KSME-A.2015.39.7.645

Determination method of ramberg-osgood constants for leak before break evaluation

Kyung Dong Bae, Ho Wan Ryu, Yun Jae Kim, Jin Weon Kim, Jong Sung Kim, Young Jin Oh

School of Mechanical Engineering

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

1 Citation (Scopus)

Abstract

In this study, a method for determining Ramberg-Osgood constants for leak-before-break evaluation was investigated. The Ramberg-Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress-strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg-Osgood constants for leak-before-break evaluation was confirmed.

Original language	English
Pages (from-to)	645-652
Number of pages	8
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	39
Issue number	7
DOIs	https://doi.org/10.3795/KSME-A.2015.39.7.645
Publication status	Published - 2015 Jul

Keywords

Circumferential through-wall crack
Crack opening displacement
Deformation plasticity
Incremental plasticity
J - integral
Leak before break assessment
Ramberg-osgood equation

ASJC Scopus subject areas

Mechanical Engineering

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10.3795/KSME-A.2015.39.7.645

Cite this

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title = "Determination method of ramberg-osgood constants for leak before break evaluation",

abstract = "In this study, a method for determining Ramberg-Osgood constants for leak-before-break evaluation was investigated. The Ramberg-Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress-strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg-Osgood constants for leak-before-break evaluation was confirmed.",

keywords = "Circumferential through-wall crack, Crack opening displacement, Deformation plasticity, Incremental plasticity, J - integral, Leak before break assessment, Ramberg-osgood equation",

author = "Bae, {Kyung Dong} and Ryu, {Ho Wan} and Kim, {Yun Jae} and Kim, {Jin Weon} and Kim, {Jong Sung} and Oh, {Young Jin}",

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year = "2015",

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doi = "10.3795/KSME-A.2015.39.7.645",

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AU - Bae, Kyung Dong

AU - Ryu, Ho Wan

AU - Kim, Yun Jae

AU - Kim, Jin Weon

AU - Kim, Jong Sung

AU - Oh, Young Jin

PY - 2015/7

Y1 - 2015/7

N2 - In this study, a method for determining Ramberg-Osgood constants for leak-before-break evaluation was investigated. The Ramberg-Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress-strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg-Osgood constants for leak-before-break evaluation was confirmed.

AB - In this study, a method for determining Ramberg-Osgood constants for leak-before-break evaluation was investigated. The Ramberg-Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress-strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg-Osgood constants for leak-before-break evaluation was confirmed.

KW - Circumferential through-wall crack

KW - Crack opening displacement

KW - Deformation plasticity

KW - Incremental plasticity

KW - J - integral

KW - Leak before break assessment

KW - Ramberg-osgood equation

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Determination method of ramberg-osgood constants for leak before break evaluation

Abstract

Keywords

ASJC Scopus subject areas

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