The indirect measurement of tensile strength by the new model FGMC (1,n)

Measurement ◽  
2011 ◽  
Vol 44 (10) ◽  
pp. 1884-1897 ◽  
Author(s):  
Tzu-Li Tien
Keyword(s):  
Tensile Strength ◽  
Indirect Measurement ◽  
New Model

scholarly journals Proposition of a net-like model of snow

1993 ◽  
Vol 18 ◽  
pp. 72-78
Author(s):  
Zempachi Watanabe
Keyword(s):  
Tensile Strength ◽  
Thin Section ◽  
Published Data ◽  
New Model ◽  
Polycrystalline Ice ◽  
Real State

Thin-section photographs show that snow consists of lumpy parts and connecting branches. The model proposed here agrees with this real state. This new model is derived from four packing forms of isometric spheres by shrinking the original spheres while maintaining and connecting points of contact as a column. The texture of the model can be varied by setting the packing form, the shrinking ratio and the thickness of connecting branches. When the density and strength of the material of the model are set to the values of polycrystalline ice, the model density and tensile strength agree with published data for dry compacted snow.

Indirect measurement of tensile strength of hollow fiber braid membranes

Desalination ◽  
2008 ◽  
Vol 234 (1-3) ◽  
pp. 107-115 ◽  
Author(s):  
Myoung Jun Park ◽  
Hern Kim
Keyword(s):  
Tensile Strength ◽  
Hollow Fiber ◽  
Indirect Measurement

scholarly journals Numerical analysis of the influence of sample stiffness and plate shape in the Brazilian test

DYNA ◽  
2015 ◽  
Vol 82 (194) ◽  
pp. 79-85 ◽  
Author(s):  
Martina Inmaculada Álvarez Fernández ◽  
Celestino González Nicieza ◽  
Maria Belén Prendes Gero ◽  
José Ramón García-Menéndez ◽  
Juan Carlos Peñas Espinosa ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Tensile Stress ◽  
Tensile Tests ◽  
Indirect Measurement ◽  
Brazilian Test ◽  
Stress Fields ◽  
Plate Shape ◽  
Load Increase ◽  
Indirect Tensile ◽  
Different Young’S Modulus

Due to the heterogeneity of rocks, their tensile strength is around 10% of their compressive strength, which means that breakage is mainly caused by tensile stress. The measure of tensile stress is very difficult due to rock fragility, so it has usually been measured by indirect measurement methods , including the Brazilian test. However, recent works indicate that the tensile strength values obtained through the Brazilian test must be increased by almost 26%. To understand this divergence, indirect tensile tests have been monitored. The aim is to know the material deformation and load increase by means of stepwise regression. Stress fields in slightly deformed samples are analyzed and modeled (3D finite differences) with loads applied on flat and curved plates and different Young's modulus. Finally, the results are analyzed and compared with strength values reported using Timoshenko theory and Hondros' approximation.

scholarly journals Proposition of a net-like model of snow

1993 ◽  
Vol 18 ◽  
pp. 72-78 ◽  
Author(s):  
Zempachi Watanabe
Keyword(s):  
Tensile Strength ◽  
Thin Section ◽  
Published Data ◽  
New Model ◽  
Polycrystalline Ice ◽  
Real State

Thin-section photographs show that snow consists of lumpy parts and connecting branches. The model proposed here agrees with this real state. This new model is derived from four packing forms of isometric spheres by shrinking the original spheres while maintaining and connecting points of contact as a column. The texture of the model can be varied by setting the packing form, the shrinking ratio and the thickness of connecting branches. When the density and strength of the material of the model are set to the values of polycrystalline ice, the model density and tensile strength agree with published data for dry compacted snow.

scholarly journals A Novel Analytical Solution for the Brazilian Test with Loading Arcs

2020 ◽  
Vol 2020 ◽  
pp. 1-19
Author(s):  
R. Gutiérrez-Moizant ◽  
M. Ramírez-Berasategui ◽  
S. Santos-Cuadros ◽  
C. C. García-Fernández
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Indirect Tensile Strength ◽  
Finite Element Models ◽  
The Finite Element Method ◽  
Contact Pressure Distribution ◽  
Brazilian Disk ◽  
New Model ◽  
Proposed Model ◽  
Indirect Tensile

This research study presents a new theoretical model to calculate the indirect tensile strength for the Brazilian disk with loading arcs, based on numerical simulations, two-dimensional elasticity theory, and Griffith failure criterion. The new expression incorporates a no uniform contact pressure distribution determined by the results of the simulations with the finite element method. A computational experiment design has been developed to test the accuracy of the predictions made with the proposed model. This study demonstrates that the stresses predicted with the new model are closer to those determined by the finite element models than other theoretical solutions available in the literature. Additionally, a comparative analysis with experimental results obtained by other authors also indicates that the new model provides a more accurate magnitude of the indirect tensile strength.

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