Numerical analysis of asymmetric fatigue crack growth behaviors of circular notched bar specimen resulting from various geometric misalignments

Ilhyun Kim; Yongjian Zhao; Byoung Ho Choi; Ji Mi Lee; Ki Soo Lee; Jeong Moo Lee

doi:10.1016/j.engfracmech.2013.04.015

Numerical analysis of asymmetric fatigue crack growth behaviors of circular notched bar specimen resulting from various geometric misalignments

Ilhyun Kim, Yongjian Zhao, Byoung Ho Choi, Ji Mi Lee, Ki Soo Lee, Jeong Moo Lee

School of Mechanical Engineering

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

22 Citations (Scopus)

Abstract

The effects of various misalignments of circular notched bar (CNB) specimens on the fatigue crack propagation behavior of pipe grade polyethylene were investigated by finite element analyses. Generally, as the misalignments increased, the asymmetric crack growth accelerated with a consequent decrease in the time taken to reach the critical stress intensity factors. It was therefore confirmed that the lifetime to failure of CNB specimens varies noticeably when they are misaligned. Going by our study results, the fatigue crack growth behavior of CNB specimens, including their lifetime estimations, should be considered by addressing the effects of their misalignments.

Original language	English
Pages (from-to)	50-64
Number of pages	15
Journal	Engineering Fracture Mechanics
Volume	108
DOIs	https://doi.org/10.1016/j.engfracmech.2013.04.015
Publication status	Published - 2013 Aug

Keywords

Circular notched bar specimen
Fatigue crack growth
Fatigue lifetime
Geometric misalignment
Stress intensity factor

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.engfracmech.2013.04.015

Cite this

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title = "Numerical analysis of asymmetric fatigue crack growth behaviors of circular notched bar specimen resulting from various geometric misalignments",

abstract = "The effects of various misalignments of circular notched bar (CNB) specimens on the fatigue crack propagation behavior of pipe grade polyethylene were investigated by finite element analyses. Generally, as the misalignments increased, the asymmetric crack growth accelerated with a consequent decrease in the time taken to reach the critical stress intensity factors. It was therefore confirmed that the lifetime to failure of CNB specimens varies noticeably when they are misaligned. Going by our study results, the fatigue crack growth behavior of CNB specimens, including their lifetime estimations, should be considered by addressing the effects of their misalignments.",

keywords = "Circular notched bar specimen, Fatigue crack growth, Fatigue lifetime, Geometric misalignment, Stress intensity factor",

author = "Ilhyun Kim and Yongjian Zhao and Choi, {Byoung Ho} and Lee, {Ji Mi} and Lee, {Ki Soo} and Lee, {Jeong Moo}",

note = "Funding Information: The support provided by LG Chem for this work is specially acknowledged. This work was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (MEST) (NRF-331-2008-1-D00005).",

year = "2013",

month = aug,

doi = "10.1016/j.engfracmech.2013.04.015",

language = "English",

volume = "108",

pages = "50--64",

journal = "Engineering Fracture Mechanics",

issn = "0013-7944",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Numerical analysis of asymmetric fatigue crack growth behaviors of circular notched bar specimen resulting from various geometric misalignments

AU - Kim, Ilhyun

AU - Zhao, Yongjian

AU - Choi, Byoung Ho

AU - Lee, Ji Mi

AU - Lee, Ki Soo

AU - Lee, Jeong Moo

N1 - Funding Information: The support provided by LG Chem for this work is specially acknowledged. This work was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (MEST) (NRF-331-2008-1-D00005).

PY - 2013/8

Y1 - 2013/8

N2 - The effects of various misalignments of circular notched bar (CNB) specimens on the fatigue crack propagation behavior of pipe grade polyethylene were investigated by finite element analyses. Generally, as the misalignments increased, the asymmetric crack growth accelerated with a consequent decrease in the time taken to reach the critical stress intensity factors. It was therefore confirmed that the lifetime to failure of CNB specimens varies noticeably when they are misaligned. Going by our study results, the fatigue crack growth behavior of CNB specimens, including their lifetime estimations, should be considered by addressing the effects of their misalignments.

AB - The effects of various misalignments of circular notched bar (CNB) specimens on the fatigue crack propagation behavior of pipe grade polyethylene were investigated by finite element analyses. Generally, as the misalignments increased, the asymmetric crack growth accelerated with a consequent decrease in the time taken to reach the critical stress intensity factors. It was therefore confirmed that the lifetime to failure of CNB specimens varies noticeably when they are misaligned. Going by our study results, the fatigue crack growth behavior of CNB specimens, including their lifetime estimations, should be considered by addressing the effects of their misalignments.

KW - Circular notched bar specimen

KW - Fatigue crack growth

KW - Fatigue lifetime

KW - Geometric misalignment

KW - Stress intensity factor

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U2 - 10.1016/j.engfracmech.2013.04.015

DO - 10.1016/j.engfracmech.2013.04.015

M3 - Article

AN - SCOPUS:84881024532

VL - 108

SP - 50

EP - 64

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

SN - 0013-7944

ER -

Numerical analysis of asymmetric fatigue crack growth behaviors of circular notched bar specimen resulting from various geometric misalignments

Abstract

Keywords

ASJC Scopus subject areas

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