R-curves determination of ordinary refractory ceramics assisted by digital image correlation method

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R-curves determination of ordinary refractory ceramics assisted by digital image correlation method. / Dai, Yajie; Harmuth, Harald; Jin, Shengli et al.
In: Journal of the European Ceramic Society, Vol. 40.2020, No. 13, 20.05.2020, p. 4655-4663.

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Dai Y, Harmuth H, Jin S, Gruber D, Yawei L. R-curves determination of ordinary refractory ceramics assisted by digital image correlation method. Journal of the European Ceramic Society. 2020 May 20;40.2020(13):4655-4663. Epub 2020 May 20. doi: 10.1016/j.jeurceramsoc.2020.05.047

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@article{0eb1f26836e74ff48e064e9b93d47767,
title = "R-curves determination of ordinary refractory ceramics assisted by digital image correlation method",
abstract = "As a figure-of-merit, the rising ratio of crack propagation resistance to fracture initiation resistance indicates a reduction of the brittleness and enhances the thermal shock resistance of ordinary refractory ceramics. The significant nonlinear fracture behaviour is related to the development of a fracture process zone (FPZ). The universal dimensionless load–displacement diagram method is applied as a promising graphical method for the determination of R-curves for magnesia refractories showing different brittleness. By applying digital image correlation (DIC) together with the graphical method, the problems arisen with accurate determination of the fracture initiation resistance and the crack length are overcome. Meanwhile, the R-curve is subdivided with respect to the fracture processes, viz the fracture initiation, the development of FPZ and the onset of traction free macro-crack. With the simultaneous crack lengths evaluated from DIC, the contribution of each fracture process to the crack propagation resistance at certain loading stage is quantitatively presented.",
author = "Yajie Dai and Harald Harmuth and Shengli Jin and Dietmar Gruber and Li Yawei",
note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",
year = "2020",
month = may,
day = "20",
doi = "10.1016/j.jeurceramsoc.2020.05.047",
language = "English",
volume = "40.2020",
pages = "4655--4663",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier",
number = "13",

}

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TY - JOUR

T1 - R-curves determination of ordinary refractory ceramics assisted by digital image correlation method

AU - Dai, Yajie

AU - Harmuth, Harald

AU - Jin, Shengli

AU - Gruber, Dietmar

AU - Yawei, Li

N1 - Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/5/20

Y1 - 2020/5/20

N2 - As a figure-of-merit, the rising ratio of crack propagation resistance to fracture initiation resistance indicates a reduction of the brittleness and enhances the thermal shock resistance of ordinary refractory ceramics. The significant nonlinear fracture behaviour is related to the development of a fracture process zone (FPZ). The universal dimensionless load–displacement diagram method is applied as a promising graphical method for the determination of R-curves for magnesia refractories showing different brittleness. By applying digital image correlation (DIC) together with the graphical method, the problems arisen with accurate determination of the fracture initiation resistance and the crack length are overcome. Meanwhile, the R-curve is subdivided with respect to the fracture processes, viz the fracture initiation, the development of FPZ and the onset of traction free macro-crack. With the simultaneous crack lengths evaluated from DIC, the contribution of each fracture process to the crack propagation resistance at certain loading stage is quantitatively presented.

AB - As a figure-of-merit, the rising ratio of crack propagation resistance to fracture initiation resistance indicates a reduction of the brittleness and enhances the thermal shock resistance of ordinary refractory ceramics. The significant nonlinear fracture behaviour is related to the development of a fracture process zone (FPZ). The universal dimensionless load–displacement diagram method is applied as a promising graphical method for the determination of R-curves for magnesia refractories showing different brittleness. By applying digital image correlation (DIC) together with the graphical method, the problems arisen with accurate determination of the fracture initiation resistance and the crack length are overcome. Meanwhile, the R-curve is subdivided with respect to the fracture processes, viz the fracture initiation, the development of FPZ and the onset of traction free macro-crack. With the simultaneous crack lengths evaluated from DIC, the contribution of each fracture process to the crack propagation resistance at certain loading stage is quantitatively presented.

UR - http://www.scopus.com/inward/record.url?scp=85085340913&partnerID=8YFLogxK

U2 - 10.1016/j.jeurceramsoc.2020.05.047

DO - 10.1016/j.jeurceramsoc.2020.05.047

M3 - Article

VL - 40.2020

SP - 4655

EP - 4663

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 13

ER -