Study of anisotropic crack growth behavior for aluminum alloy 7050-T7451

Jun Cao; Fuguo Li; Xinkai Ma; Zhankun Sun

doi:10.1016/j.engfracmech.2018.04.011

Study of anisotropic crack growth behavior for aluminum alloy 7050-T7451

Jun Cao, Fuguo Li, Xinkai Ma, Zhankun Sun

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

6 Scopus citations

Abstract

Hill's normalized plastic zone at crack tip under mode-I and mixed-mode loadings were studied in compact-tension-shear specimen. Effects of the parameters of Hill's criterion on the normalized plastic zone were analyzed. Moreover, the shapes of normalized plastic zones for distortional and total strain-energy-density were investigated. To analyze the crack growth behavior by different normalized plastic zones, fatigue crack growth tests of AA7050-T7451 were performed using digital image correlation technique. The initiation angle predicted by anisotropic R-criterion under mixed-mode loading is closest to experimental data.

Original language	English
Pages (from-to)	98-112
Number of pages	15
Journal	Engineering Fracture Mechanics
Volume	196
DOIs	https://doi.org/10.1016/j.engfracmech.2018.04.011
State	Published - 1 Jun 2018

Keywords

Anisotropy
Compact-tension-shear specimen
Crack growth
Normalized plastic zone

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10.1016/j.engfracmech.2018.04.011

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title = "Study of anisotropic crack growth behavior for aluminum alloy 7050-T7451",

abstract = "Hill's normalized plastic zone at crack tip under mode-I and mixed-mode loadings were studied in compact-tension-shear specimen. Effects of the parameters of Hill's criterion on the normalized plastic zone were analyzed. Moreover, the shapes of normalized plastic zones for distortional and total strain-energy-density were investigated. To analyze the crack growth behavior by different normalized plastic zones, fatigue crack growth tests of AA7050-T7451 were performed using digital image correlation technique. The initiation angle predicted by anisotropic R-criterion under mixed-mode loading is closest to experimental data.",

keywords = "Anisotropy, Compact-tension-shear specimen, Crack growth, Normalized plastic zone",

author = "Jun Cao and Fuguo Li and Xinkai Ma and Zhankun Sun",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = jun,

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doi = "10.1016/j.engfracmech.2018.04.011",

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T1 - Study of anisotropic crack growth behavior for aluminum alloy 7050-T7451

AU - Cao, Jun

AU - Li, Fuguo

AU - Ma, Xinkai

AU - Sun, Zhankun

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Hill's normalized plastic zone at crack tip under mode-I and mixed-mode loadings were studied in compact-tension-shear specimen. Effects of the parameters of Hill's criterion on the normalized plastic zone were analyzed. Moreover, the shapes of normalized plastic zones for distortional and total strain-energy-density were investigated. To analyze the crack growth behavior by different normalized plastic zones, fatigue crack growth tests of AA7050-T7451 were performed using digital image correlation technique. The initiation angle predicted by anisotropic R-criterion under mixed-mode loading is closest to experimental data.

AB - Hill's normalized plastic zone at crack tip under mode-I and mixed-mode loadings were studied in compact-tension-shear specimen. Effects of the parameters of Hill's criterion on the normalized plastic zone were analyzed. Moreover, the shapes of normalized plastic zones for distortional and total strain-energy-density were investigated. To analyze the crack growth behavior by different normalized plastic zones, fatigue crack growth tests of AA7050-T7451 were performed using digital image correlation technique. The initiation angle predicted by anisotropic R-criterion under mixed-mode loading is closest to experimental data.

KW - Anisotropy

KW - Compact-tension-shear specimen

KW - Crack growth

KW - Normalized plastic zone

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DO - 10.1016/j.engfracmech.2018.04.011

M3 - 文章

AN - SCOPUS:85045904810

SN - 0013-7944

VL - 196

SP - 98

EP - 112

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Study of anisotropic crack growth behavior for aluminum alloy 7050-T7451

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Keywords

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