Investigation of the mixed-mode fatigue crack growth of a hot-rolled steel plate with a circular microdefect

Ki Jeong Seo; Byoung Ho Choi; Jeong Moo Lee; Seung Man Shin

doi:10.1016/j.ijfatigue.2009.12.015

Investigation of the mixed-mode fatigue crack growth of a hot-rolled steel plate with a circular microdefect

Ki Jeong Seo, Byoung Ho Choi, Jeong Moo Lee, Seung Man Shin

School of Mechanical Engineering

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

7 Citations (Scopus)

Abstract

The interaction between cracks and microdefects under mixed-mode loading conditions is important for precisely estimating the fatigue lifetime of a structure. In this study, the fatigue crack growth behavior of a crack with a circular microdefect is investigated under mixed-mode loading conditions experimentally using modified compact tension shear (CTS) specimens for various loading angles with/without a circular microdefect. The fatigue crack growth behavior observed through experiments is analyzed by linear elastic finite element (FE) analyses and the simulated crack path using the maximum tangential stress (MTS) criterion is compared and discussed with the crack path observed through experiments.

Original language	English
Pages (from-to)	1190-1199
Number of pages	10
Journal	International Journal of Fatigue
Volume	32
Issue number	7
DOIs	https://doi.org/10.1016/j.ijfatigue.2009.12.015
Publication status	Published - 2010 Jul

Keywords

CTS specimen
Crack-microdefect interaction
Fatigue crack propagation
MTS criterion
Mixed-mode loading

ASJC Scopus subject areas

Modelling and Simulation
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.ijfatigue.2009.12.015

Cite this

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title = "Investigation of the mixed-mode fatigue crack growth of a hot-rolled steel plate with a circular microdefect",

abstract = "The interaction between cracks and microdefects under mixed-mode loading conditions is important for precisely estimating the fatigue lifetime of a structure. In this study, the fatigue crack growth behavior of a crack with a circular microdefect is investigated under mixed-mode loading conditions experimentally using modified compact tension shear (CTS) specimens for various loading angles with/without a circular microdefect. The fatigue crack growth behavior observed through experiments is analyzed by linear elastic finite element (FE) analyses and the simulated crack path using the maximum tangential stress (MTS) criterion is compared and discussed with the crack path observed through experiments.",

keywords = "CTS specimen, Crack-microdefect interaction, Fatigue crack propagation, MTS criterion, Mixed-mode loading",

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AU - Seo, Ki Jeong

AU - Choi, Byoung Ho

AU - Lee, Jeong Moo

AU - Shin, Seung Man

PY - 2010/7

Y1 - 2010/7

N2 - The interaction between cracks and microdefects under mixed-mode loading conditions is important for precisely estimating the fatigue lifetime of a structure. In this study, the fatigue crack growth behavior of a crack with a circular microdefect is investigated under mixed-mode loading conditions experimentally using modified compact tension shear (CTS) specimens for various loading angles with/without a circular microdefect. The fatigue crack growth behavior observed through experiments is analyzed by linear elastic finite element (FE) analyses and the simulated crack path using the maximum tangential stress (MTS) criterion is compared and discussed with the crack path observed through experiments.

AB - The interaction between cracks and microdefects under mixed-mode loading conditions is important for precisely estimating the fatigue lifetime of a structure. In this study, the fatigue crack growth behavior of a crack with a circular microdefect is investigated under mixed-mode loading conditions experimentally using modified compact tension shear (CTS) specimens for various loading angles with/without a circular microdefect. The fatigue crack growth behavior observed through experiments is analyzed by linear elastic finite element (FE) analyses and the simulated crack path using the maximum tangential stress (MTS) criterion is compared and discussed with the crack path observed through experiments.

KW - CTS specimen

KW - Crack-microdefect interaction

KW - Fatigue crack propagation

KW - MTS criterion

KW - Mixed-mode loading

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DO - 10.1016/j.ijfatigue.2009.12.015

M3 - Article

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SN - 0142-1123

VL - 32

SP - 1190

EP - 1199

JO - International Journal of Fatigue

JF - International Journal of Fatigue

IS - 7

ER -

Investigation of the mixed-mode fatigue crack growth of a hot-rolled steel plate with a circular microdefect

Abstract

Keywords

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