On the use of Brazilian disc specimen for calculating mixed mode I–II fracture toughness of rock materials

Ayatollahi, M.R.; Aliha, M.R.M.

doi:10.1016/j.engfracmech.2008.06.018

Cited by 260 publications

(117 citation statements)

References 23 publications

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“…The numerical simulation was performed in finite element (FE) software Ansys 17.2 [23]. A two-dimensional (2D) numerical model with plane strain boundary condition were used to calculate SIF (K I and K II ).…”

Section: Calibration Curvesmentioning

confidence: 99%

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Seitl

Miarka

2017

Frattura Ed Integrità Strutturale

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ABSTRACT. Durability and sustainability of structures made from concrete like materials is getting more into an interest of civil engineers. Structures are subjected not only to uniaxial load, this means if there is a crack inside the load could be divided into mode I and shear mode II, but also to a mixed mode I/II. Therefore, it is necessary to perform test, which covers mixed mode loads and could be used for specimen made from concrete core-drill. Recommended test specimens used for evaluation of fracture mechanical parameters has usually a prismatic or rectangular shape. The cost of reshaping cylinder into rectangular is expensive and not very efficient, therefore it is very effective to use Brazilian disc test specimen with central notch to obtain mixed mode fracture parameters. The contribution deals with numerical support for Brazilian disc test to obtain calibration curves for mode I and mode II, evaluation of experimental results and compare them with data adapted from literature.

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Section: Calibration Curvesmentioning

confidence: 99%

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Seitl

Miarka

2017

Frattura Ed Integrità Strutturale

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“…Brazilian disc test with a central notch (BDC) is specimen with circular cross section, made from the cylinder with a notch in the middle of specimen (see Figure 1a) [8][9][10]. The test performed on the BDC specimen is carried out under relatively simple experimental conditions (see Figure 1b), using only the testing press with sufficient load capacity.…”

Section: Brazilian Disc Testmentioning

confidence: 99%

Comparison of Fracture Resistance of the Normal and High Strength Concrete Evaluated by Brazilian Disc Test

Miarka

Seitl

Bílek

2018

The 18th International Conference on Experimental Mechanics

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Nowadays, high performance concrete is used more frequently because of the many advantages compared to traditional concrete. The higher mechanical properties (e.g., compressive strength, flexural strength, and Young's modulus) allow for larger spans and slender cross-sections. Despite the use of advanced material, standards for structural design do not fully use materials' potential. This can be minimized by using fracture mechanical properties in structural analysis. The fracture mechanical properties help to perform advanced structural analysis, especially when some of the structural elements have a crack. The load presence on the structure can be divided into tensile-mode I, shear-mode II, and combination of tension and shear-mixed mode I/II load. Therefore, it is necessary to perform test, which covers mixed mode loading conditions. One of the tests usually used for the evaluation of fracture resistance of concrete is Brazilian disc test. This contribution compares fracture resistance of two types of structural concrete (normal and high strength) under the mixed mode I/II. The generalized maximum tangential stress (GMTS) criterion was used for the evaluation of the fracture resistance.

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“…In this research, the stress intensity factors of an interface notch were determined by the technique of photoelasticity. The Brazilian disc specimen subjected to diametral compression is one the favorite test samples for investigating the tensile strength and fracture behaviore of cracks and notches in different engineering materials (Chang et al, 2002;Ayatollahi & Aliha, 2008, Aliha & Ayatollahi, 2009Torabi & Taherkhani, 2011;Torabi & Jafarinezhad, 2012;Aliha et al, 2012;Aliha, 2013). In this paper, by employing the Brazilian disc specimen containing a bi-material notch, the SIFs in predominant mode I and mode II conditions were determined.…”

Section: Introductionmentioning

confidence: 99%

Calculation of stress intensity factors for an interfacial notch of a bi-material joint using photoelasticity

Mirsayar

2013

10.5267/j.esm

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In this paper, the stress intensity factors (SIFs) for an interfacial notch in a bi-material joint have been calculated using the experimental method of photoelasticity. A bi-material Brazilian disc specimen with a central interface notch was employed to determine the SIFs for different mode mixities. In this approach, SIFs were calculated experimentally for an Al/Polycarbonate bi-material Brazilian disc specimen and two different loading angles (i.e. modes I and II dominated loading conditions). The results of experimental approach were then compared with the numerical values of finite element method. Experimental results were in good consistency with the numerical values.

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On the use of Brazilian disc specimen for calculating mixed mode I–II fracture toughness of rock materials

Cited by 260 publications

References 23 publications

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Comparison of Fracture Resistance of the Normal and High Strength Concrete Evaluated by Brazilian Disc Test

Calculation of stress intensity factors for an interfacial notch of a bi-material joint using photoelasticity

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