Plastic deformation of ductile ceramics in the Al2TiO5–MgTi2O5 system

Shimazu, T.; Miura, Masashi; Isu, Norifumi; Ogawa, Takao; Ota, Kohei; Maeda, Hirotaka; Ishida, Emile H.

doi:10.1016/j.msea.2007.10.026

Cited by 22 publications

(8 citation statements)

References 7 publications

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“…Rocks are one of the most widely used construction materials in engineering; for example, basalt is used as a reinforcing material in concrete (Lee et al 2010) and itacolumite, a type of sandstone, is a widely used material in the ceramics industry (Shimazu et al 2008). Granite gneiss is a candidate material for underground oil, CO 2 and shale gas storage and radioactive waste disposal, because of its low permeability (Liu and Xu 2015;Tsang et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Permeability Evolution of Granite Gneiss During Triaxial Creep Tests

Liu

Wang

et al. 2016

Rock Mech Rock Eng

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Permeability is an important factor for seepage analysis of rock material, and a key factor in ensuring the safety of underground works. In this study, the permeability evolution of granite gneiss during triaxial creep tests was investigated. In the context of an underground oil storage cavern in China, a series of hydro-mechanical coupling creep tests were conducted on rock cores of granite gneiss at three different pore pressures to reveal the effect of pore pressure on the permeability evolution and to investigate the correlation between the permeability and volumetric strain during the creep process. During the creep tests, the permeability decreases in the initial loading phase. At all deviatoric stress levels, the permeability remains stable in the steady creep stage and increases rapidly in the accelerated creep stage. Based on the test data, the initial permeability, steady permeability and peak permeability at various stress levels are defined. The effect of pore pressure on the permeability is captured by a linear model. In addition, the relationship between permeability and volumetric strain can be described as a process divided into three phases, with different functions in each phase.

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Section: Introductionmentioning

confidence: 99%

Permeability Evolution of Granite Gneiss During Triaxial Creep Tests

Liu

Wang

et al. 2016

Rock Mech Rock Eng

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“…The rock exhibits spectacular flexibility, with plates of 2-3 cm thickness and several tens of cm length having deflections on the order of several cm when loaded in bending with small forces [17]; see Supplemental Material [18]. This behavior has inspired the development of flexible man-made ceramics [19,20], which, however, are not used broadly due to their reduced strength and stiffness relative to the corresponding monolithic ceramics.…”

Section: Introductionmentioning

confidence: 99%

Interlocking-induced stiffness in stochastically microcracked materials beyond the transport percolation threshold

2016

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We study the mechanical behavior of two-dimensional, stochastically microcracked continua in the range of crack densities close to, and above, the transport percolation threshold. We show that these materials retain stiffness up to crack densities much larger than the transport percolation threshold due to topological interlocking of sample subdomains. Even with a linear constitutive law for the continuum, the mechanical behavior becomes nonlinear in the range of crack densities bounded by the transport and stiffness percolation thresholds. The effect is due to the fractal nature of the fragmentation process and is not linked to the roughness of individual cracks.

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“…Since MgTi 2 O 5 has relativity high thermal stability among pseudobrookite-type phases, Al 2 TiO 5 -MgTi 2 O 5 solid solution has been investigated [17][18][19][20][21][22]. Moreover, our group has studied porous MgTi 2 O 5 as a third-generation diesel particulate filter material with well-balanced properties, such as low thermal expansion, low cost, high-temperature stability and potentially good mechanical properties [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%