The effect of complex crack shape on crack driving forces and crack tip stress fields: Experiment and FE analysis

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

doi:10.1016/j.ijpvp.2020.104135

The effect of complex crack shape on crack driving forces and crack tip stress fields: Experiment and FE analysis

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

School of Mechanical Engineering

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

2 Citations (Scopus)

Abstract

This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.

Original language	English
Article number	104135
Journal	International Journal of Pressure Vessels and Piping
Volume	185
DOIs	https://doi.org/10.1016/j.ijpvp.2020.104135
Publication status	Published - 2020 Aug

Keywords

Complex crack shape
Complex cracked tension specimen testing
Crack tip stress field
Finite element analysis
Fracture mechanics parameters

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijpvp.2020.104135

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title = "The effect of complex crack shape on crack driving forces and crack tip stress fields: Experiment and FE analysis",

abstract = "This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.",

keywords = "Complex crack shape, Complex cracked tension specimen testing, Crack tip stress field, Finite element analysis, Fracture mechanics parameters",

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

note = "Funding Information: This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning ( KETEP ), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20131520202170 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = aug,

doi = "10.1016/j.ijpvp.2020.104135",

language = "English",

volume = "185",

journal = "International Journal of Pressure Vessels and Piping",

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T2 - Experiment and FE analysis

AU - Kim, Seung Jae

AU - Bae, Kyung Dong

AU - Kim, Yun Jae

AU - Ryu, Ho Wan

AU - Kim, Jin Weon

AU - Oh, Young Jin

N1 - Funding Information: This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning ( KETEP ), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20131520202170 ). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/8

Y1 - 2020/8

N2 - This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.

AB - This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.

KW - Complex crack shape

KW - Complex cracked tension specimen testing

KW - Crack tip stress field

KW - Finite element analysis

KW - Fracture mechanics parameters

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VL - 185

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

SN - 0308-0161

M1 - 104135

ER -

The effect of complex crack shape on crack driving forces and crack tip stress fields: Experiment and FE analysis

Abstract

Keywords

ASJC Scopus subject areas

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