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Bidirectional permeability characterization of composite specimen of graded crushed coal bodies. [PDF]

Sci Rep
Zhang L, Yang S, Pan H, Zhang T.
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Exploiting Unsupervised Free-Living Data for Cardiorespiratory Fitness Estimation: Systematic Review and Meta-Analysis.

JMIR Mhealth Uhealth
Dosis A, Syversen AB, Kowal MR, Grant D, Tiernan J, Wong D, Jayne DG.   +6 more
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True Triaxial Testing of Anisotropic Solids

56th U.S. Rock Mechanics/Geomechanics Symposium, 2022
ABSTRACT: Accurate determination of rock mechanical properties (particularly sedimentary shales, mica and schists with foliation and bedding planes) is critical to the safe design and excavation of underground mines and tunnels.
X. Zhu, M. Serati, E. Mutaz, Z. Chen
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True Triaxial Apparatuses with Two Rigid Boundaries

Site Characterization and Modeling, 2005
A small-scale and a large-scale true triaxial apparatuses (where σ1≠σ2≠σ3) were recently developed at the Institute of Industrial Science, University of Tokyo, Japan and are described in this paper. In these apparatuses, a comprehensive loading system that can control both strain rate and stress rate is used for the vertical (axial) direction.
L. Q. AnhDan, J. Koseki, K. Hayano, T. Sato   +3 more
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Triaxial and True Triaxial Testing of Preserved and Partially Saturated Shale

Proceedings, 2016
Samples of a clay-rich shale have been subjected to standard and true triaxial stress conditions to investigate the impact of the intermediate principal stress on shale strength and elastic stiffness. In addition, samples were immersed in different relative humidity environments to evaluate the impact of changing water saturation on rock properties ...
V. Minaeian, D. Dewhurst, V. Rasouli
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A True Triaxial Testing Cell

1988
Results of both drained and undrained triaxial tests performed with a true triaxial cell on both natural and artificial clays are presented and discussed. The true triaxial apparatus, which has been used for about 20 years, is fully described. The apparatus has recently been modified to improve the measurement of lateral deformations.
V Silvestri, RN Yong, AMO Mohamed
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Development of a True Triaxial Testing Apparatus

Geotechnical Testing Journal, 1992
Abstract A stress-controlled, flexible boundary, true (or cubical) triaxial apparatus has been developed to investigate the behavior of cemented sand under various stress paths which are not achievable using conventional axisymmetric triaxial apparatus.
KR Reddy, SK Saxena, JS Budiman
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The Cambridge True Triaxial Apparatus

1988
In true triaxial apparatus, samples of soil are subjected to three independent principal stresses and strains. Such apparatus can readily be used for controlled exploration of principal stress or principal strain space to provide information concerning the anisotropic response of the soil to aid the development of constitutive relations.
DW Airey, DM Wood
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True Triaxial Yielding and Hardening of Rock

Journal of Geotechnical Engineering, 1987
Analysis of test results for intact and granulated marbles (cemented and noncemented granular materials) adds to the indications that strain softening does not express a real material behavior; it highlights similarities in stressstrain relations and confirms equality of a stress and a plastic strain invariant. The physical meaning of the parameters of
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True-triaxial strength criteria for rock

International Journal of Rock Mechanics and Mining Sciences, 2009
Abstract This paper reviews some strength criteria which include the role of the intermediate principal stress, and proposes a new criterion. Strength criteria of the form σ oct = f N ( σ oct ), such as Drucker–Prager, represent a rotation surface in the principal stress space, symmetric to the line σ 1 = σ 2 = σ 3 in the meridian plane ...
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