The peculiarities of crack development in chevron-notched specimens of ZrO2 + 3% Y2O3 ceramics

Deryugin, Е. Е.; Panin, V. E.; Ласко, Г. В.; Даниленко, И. А.; Schmauder, Siegfried

doi:10.1063/1.5083305

Cited by 2 publications

(1 citation statement)

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“…Dr. h. c. S. Schmauder). [42][43] The behavior of ZrO 2 ceramics can be considered to be isotropic and brittle. The damage behavior of ceramics has been determined by prescribing the maximum principal stress as the failure criterion where after achieving a critical value, the stiffness of the element is set to a value approximating zero, and the element is not further considered in the following simulation steps.…”

Section: Fe Simulation Of Wedge Splitting Of a Dcb With Cn With The Eetmentioning

confidence: 99%

3D Finite‐Element Simulation of Wedge Splitting Test of Non‐Standard Ceramic Double Cantilever Beam with Chevron Notch

et al. 2020

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Zirconia ceramic is a material of great scientific and practical importance because of its beneficial combination of properties. However, fracture properties of ceramics are the major properties that need enhancement to satisfy high requirements for advanced applications in industry and medicine. Experimental studies have also shown that the fracture toughness of a given material can be considerably dependent on the size and geometry of the cracked body. [1,2] In the previous study, [3] it was shown that with the size of the specimen increasing, the fracture toughness is strongly dependent on the specimen size, and only when the length of the specimen approximates 1 m, the fracture toughness reaches closer to the constant value. In our contribution, we do not address the size problem, taking the same specimen sizes in simulations and in experiment. There exist several methods of fracture toughness determination, including nanoindentation, [4-6] compact tension tests experiments, [7] and method of dynamic fracture toughness determination using short beams. [8] Traditionally, fracture tests are carried out on geometries, such as the compact tension specimen, [7] which have a highly constrained crack tip and provide a lower bound estimation of fracture toughness. Moreover, for fracture testing of ceramics, compact tension tests experiments are impossible to carry out due to high brittleness of the material. Other possibilities are the three-and four-point bending testing. The standard size bending specimen provides the fracture toughness for the large specimens, but not for the small-scale ones. The miniaturization of items from ceramics in different sections of industry and medicine requires the development of a new method of fracture toughness determination for small-scaled specimens. For small-scale specimens, a non-standard method of fracture toughness determination should be developed and applied. The problem of double cantilever beam (DCB) testing of the material has recently received much attention, but not many works have been devoted to finite elements method (FEM)-simulations of fracture testing of a DCB with a chevron notch (CN) because of the complex geometry of the specimen. Mostly, articles are devoted to the DCB with a straight notch. [9-14] For example, a new data reduction scheme is proposed owing to the difficulty in monitoring the crack length in this material. [15] This method is based on the specimen compliance and the crack

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Section: Fe Simulation Of Wedge Splitting Of a Dcb With Cn With The Eetmentioning

confidence: 99%

3D Finite‐Element Simulation of Wedge Splitting Test of Non‐Standard Ceramic Double Cantilever Beam with Chevron Notch

et al. 2020

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Effects of YSZ ceramics doping with silica and alumina on its structure and properties

Belichko

Konstantinova

Волкова

et al. 2022

Materials Chemistry and Physics

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The peculiarities of crack development in chevron-notched specimens of ZrO2 + 3% Y2O3 ceramics

Cited by 2 publications

References 4 publications

3D Finite‐Element Simulation of Wedge Splitting Test of Non‐Standard Ceramic Double Cantilever Beam with Chevron Notch

3D Finite‐Element Simulation of Wedge Splitting Test of Non‐Standard Ceramic Double Cantilever Beam with Chevron Notch

Effects of YSZ ceramics doping with silica and alumina on its structure and properties

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