The effects of notch width on the SENB toughness for oxide ceramics

Wang, J.; Rainforth, W. M.; Wadsworth, I.; Stevens, R.

doi:10.1016/0955-2219(92)90115-t

Cited by 40 publications

(15 citation statements)

References 18 publications

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“…As we review only materials that show brittlein fact, linear elastic-fracture, most of the reported data belong to ceramic materials; Alumina (Bertolotti 1973;Munz et al 1980;Pastor 1993;Tsuji et al 1999), silicon nitride (Ando et al 1993;Gogotsi 2003), silicon carbide (Ando et al 1993), silicon (Myers and Hillberry 1977;Chasiotis and Knauss 2003), zirconia partially stabilized with magnesia (Wang et al 1992;Pastor 1993), zirconia partially stabilized with ytria (Gogotsi 2003), ytria stabilized tetragonal zirconia (Wang et al 1992) and a composite of alumina −7% zirconia (Yosibash et al 2004). Tests performed at −60 • C with PMMA also fail in a brittle mode (Gómez et al 2005) and are included here.…”

Section: Resultsmentioning

confidence: 97%

Failure criteria for linear elastic materials with U-notches

2006

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This paper provides a simple, albeit accurate, criterion for prediction of the rupture loads of brittle, or quasi-brittle, U-notched samples, where linear elastic fracture mechanics is not applicable because blunted notches do not exhibit stress singularities. Good agreement is found between numerical predictions and experimental results. The results of fracture tests from 18 different ceramic materials and a polymer (at −60 • C) are summarized and are used as a reference for checking the fracture criterion. Seven fracture criteria are reviewed and it is shown that all can be recast into the proposed criterion.

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Section: Resultsmentioning

confidence: 97%

Failure criteria for linear elastic materials with U-notches

2006

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“…The first method used was a Single Edge Notched Beam (SENB) geometry [9]. In this case, notches were introduced in the specimens using a refrigerated diamond disc of 400 μm thick at 1800 rpm (therefore named SENB-D specimens).…”

Section: Experimental Methodsmentioning

confidence: 99%

Influence of the notch root radius on the fracture toughness of brittle metals: Nanostructure tungsten alloy, a case study

Palacios

Pastor

2015

International Journal of Refractory Metals and Hard Materials

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“…For some applications, this size‐dependent fracture energy might represent part of the physical reality. For example, there are experiments 31 showing that the fracture toughness depends on the sharpness of a crack. Emmerich 32 considered this phenomenon through a multiscale atomistic and continuum analysis, and Volokh and Trapper 33 developed a softening hyperelastic constitutive model 24 to numerically study such sharpness‐dependent fracture toughness.…”

Section: Finite Element Implementationmentioning

confidence: 99%

Simulating fracture propagation in rock and concrete by an augmented virtual internal bond method

Zhang

Gao

2011

Num Anal Meth Geomechanics

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SUMMARYThis paper develops a practical approach to simulating fracture propagation in rock and concrete based on an augmented virtual internal bond (VIB) method in which the cohesion of solid is modeled as material particles interconnected by a network of randomized virtual micro bonds described by the XuNeedleman potential. The micro bond potential is used to derive macroscale constitutive relations via the Cauchy-Born rule. By incorporating different energy contributions due to stretch and shearing, as well as different energy levels under tension and compression of each micro bond, the derived macro constitutive laws are particularly useful for modeling quasi-brittle materials such as rock and concrete which usually have different Poisson ratios and much higher compressive strength than tensile strength. The mesh-size sensitivity associated with strain-softening in the present constitutive model is addressed by adjusting material constants near the crack tip so that the J-integral is kept equal to the intrinsic fracture energy of the material. Numerical examples demonstrate that the proposed VIB method is capable of simulating mixed mode fracture propagation in rock and concrete with results in consistency with relevant experimental observations.

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The effects of notch width on the SENB toughness for oxide ceramics

Cited by 40 publications

References 18 publications

Failure criteria for linear elastic materials with U-notches

Failure criteria for linear elastic materials with U-notches

Influence of the notch root radius on the fracture toughness of brittle metals: Nanostructure tungsten alloy, a case study

Simulating fracture propagation in rock and concrete by an augmented virtual internal bond method

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