Experimental investigation of the mixed-mode crack propagation in ZrO2/NiCr functionally graded materials

Xin Jin; Linzhi Wu; Licheng Guo; Hongjun Yu; Yuguo Sun

doi:10.1016/j.engfracmech.2009.04.003

Experimental investigation of the mixed-mode crack propagation in ZrO₂/NiCr functionally graded materials

Xin Jin
, Linzhi Wu^*
, Licheng Guo
, Hongjun Yu
, Yuguo Sun

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

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

49 Scopus citations

Abstract

Mixed-mode fracture response of ZrO₂/NiCr functionally graded materials (FGMs) is investigated using fracture test, digital image correlation technique and extended finite element method. It is found that: (1) prior to crack initiation, the increasing elastic modulus ahead of crack-tip can enhance the mode mixity of crack-tip; (2) the crack with the increasing elastic modulus ahead of crack-tip kinks less than the one with the decreasing elastic modulus, which is caused by the elastic gradient and the local fracture toughness; (3) the heterogeneity of microstructure can cause the local perturbation but has no obvious effect on the overall crack propagation path. Crown

Original language	English
Pages (from-to)	1800-1810
Number of pages	11
Journal	Engineering Fracture Mechanics
Volume	76
Issue number	12
DOIs	https://doi.org/10.1016/j.engfracmech.2009.04.003
State	Published - Aug 2009

Keywords

Crack propagation
Digital image correlation
Fracture toughness
Functionally graded materials
Mixed-mode fracture

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10.1016/j.engfracmech.2009.04.003

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title = "Experimental investigation of the mixed-mode crack propagation in ZrO2/NiCr functionally graded materials",

abstract = "Mixed-mode fracture response of ZrO2/NiCr functionally graded materials (FGMs) is investigated using fracture test, digital image correlation technique and extended finite element method. It is found that: (1) prior to crack initiation, the increasing elastic modulus ahead of crack-tip can enhance the mode mixity of crack-tip; (2) the crack with the increasing elastic modulus ahead of crack-tip kinks less than the one with the decreasing elastic modulus, which is caused by the elastic gradient and the local fracture toughness; (3) the heterogeneity of microstructure can cause the local perturbation but has no obvious effect on the overall crack propagation path. Crown",

keywords = "Crack propagation, Digital image correlation, Fracture toughness, Functionally graded materials, Mixed-mode fracture",

author = "Xin Jin and Linzhi Wu and Licheng Guo and Hongjun Yu and Yuguo Sun",

year = "2009",

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doi = "10.1016/j.engfracmech.2009.04.003",

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T1 - Experimental investigation of the mixed-mode crack propagation in ZrO2/NiCr functionally graded materials

AU - Jin, Xin

AU - Wu, Linzhi

AU - Guo, Licheng

AU - Yu, Hongjun

AU - Sun, Yuguo

PY - 2009/8

Y1 - 2009/8

N2 - Mixed-mode fracture response of ZrO2/NiCr functionally graded materials (FGMs) is investigated using fracture test, digital image correlation technique and extended finite element method. It is found that: (1) prior to crack initiation, the increasing elastic modulus ahead of crack-tip can enhance the mode mixity of crack-tip; (2) the crack with the increasing elastic modulus ahead of crack-tip kinks less than the one with the decreasing elastic modulus, which is caused by the elastic gradient and the local fracture toughness; (3) the heterogeneity of microstructure can cause the local perturbation but has no obvious effect on the overall crack propagation path. Crown

AB - Mixed-mode fracture response of ZrO2/NiCr functionally graded materials (FGMs) is investigated using fracture test, digital image correlation technique and extended finite element method. It is found that: (1) prior to crack initiation, the increasing elastic modulus ahead of crack-tip can enhance the mode mixity of crack-tip; (2) the crack with the increasing elastic modulus ahead of crack-tip kinks less than the one with the decreasing elastic modulus, which is caused by the elastic gradient and the local fracture toughness; (3) the heterogeneity of microstructure can cause the local perturbation but has no obvious effect on the overall crack propagation path. Crown

KW - Crack propagation

KW - Digital image correlation

KW - Fracture toughness

KW - Functionally graded materials

KW - Mixed-mode fracture

UR - https://www.scopus.com/pages/publications/67649227088

U2 - 10.1016/j.engfracmech.2009.04.003

DO - 10.1016/j.engfracmech.2009.04.003

M3 - 文章

AN - SCOPUS:67649227088

SN - 0013-7944

VL - 76

SP - 1800

EP - 1810

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

IS - 12

ER -

Experimental investigation of the mixed-mode crack propagation in ZrO₂/NiCr functionally graded materials

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Keywords

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