An experimental calculation method for stress intensity factors of three-dimensional surface cracks

Cong Qi; Ai Guo Pi

doi:10.1093/jom/ufae058

An experimental calculation method for stress intensity factors of three-dimensional surface cracks

Cong Qi^*, Ai Guo Pi

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

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

Abstract

Stress intensity factors (SIFs) are important parameters for evaluating structural reliability. This work combines CT in situ uniaxial compression experiment to study the main crack propagation trajectories of the reactive powder concrete (RPC) specimens. The three-dimensional (3D) displacement fields of RPC specimens with 3D surface cracks were analyzed using a 3D digital image correlation (3D-DIC) method. The 3D-DIC method was used to calculate the 3D surface crack SIFs of RPC specimens at different inclination angles, and the influence of crack inclination angles on SIFs was analyzed. The study found that the distribution pattern of SIFs calculated by the 3D-DIC method is consistent with the results obtained by the numerical method.

Original language	English
Pages (from-to)	654-664
Number of pages	11
Journal	Journal of Mechanics
Volume	40
DOIs	https://doi.org/10.1093/jom/ufae058
Publication status	Published - 2024

Keywords

3D digital image correlation
reactive powder concrete
stress intensity factor
three-dimensional surface crack

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10.1093/jom/ufae058

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title = "An experimental calculation method for stress intensity factors of three-dimensional surface cracks",

abstract = "Stress intensity factors (SIFs) are important parameters for evaluating structural reliability. This work combines CT in situ uniaxial compression experiment to study the main crack propagation trajectories of the reactive powder concrete (RPC) specimens. The three-dimensional (3D) displacement fields of RPC specimens with 3D surface cracks were analyzed using a 3D digital image correlation (3D-DIC) method. The 3D-DIC method was used to calculate the 3D surface crack SIFs of RPC specimens at different inclination angles, and the influence of crack inclination angles on SIFs was analyzed. The study found that the distribution pattern of SIFs calculated by the 3D-DIC method is consistent with the results obtained by the numerical method.",

keywords = "3D digital image correlation, reactive powder concrete, stress intensity factor, three-dimensional surface crack",

author = "Cong Qi and Pi, {Ai Guo}",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s).",

year = "2024",

doi = "10.1093/jom/ufae058",

language = "English",

volume = "40",

pages = "654--664",

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T1 - An experimental calculation method for stress intensity factors of three-dimensional surface cracks

AU - Qi, Cong

AU - Pi, Ai Guo

PY - 2024

Y1 - 2024

N2 - Stress intensity factors (SIFs) are important parameters for evaluating structural reliability. This work combines CT in situ uniaxial compression experiment to study the main crack propagation trajectories of the reactive powder concrete (RPC) specimens. The three-dimensional (3D) displacement fields of RPC specimens with 3D surface cracks were analyzed using a 3D digital image correlation (3D-DIC) method. The 3D-DIC method was used to calculate the 3D surface crack SIFs of RPC specimens at different inclination angles, and the influence of crack inclination angles on SIFs was analyzed. The study found that the distribution pattern of SIFs calculated by the 3D-DIC method is consistent with the results obtained by the numerical method.

AB - Stress intensity factors (SIFs) are important parameters for evaluating structural reliability. This work combines CT in situ uniaxial compression experiment to study the main crack propagation trajectories of the reactive powder concrete (RPC) specimens. The three-dimensional (3D) displacement fields of RPC specimens with 3D surface cracks were analyzed using a 3D digital image correlation (3D-DIC) method. The 3D-DIC method was used to calculate the 3D surface crack SIFs of RPC specimens at different inclination angles, and the influence of crack inclination angles on SIFs was analyzed. The study found that the distribution pattern of SIFs calculated by the 3D-DIC method is consistent with the results obtained by the numerical method.

KW - 3D digital image correlation

KW - reactive powder concrete

KW - stress intensity factor

KW - three-dimensional surface crack

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U2 - 10.1093/jom/ufae058

DO - 10.1093/jom/ufae058

M3 - Article

AN - SCOPUS:85209709988

SN - 1727-7191

VL - 40

SP - 654

EP - 664

JO - Journal of Mechanics

JF - Journal of Mechanics

ER -

An experimental calculation method for stress intensity factors of three-dimensional surface cracks

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Keywords

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