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1. Synthetic slip plane, a hybrid kind of calcite twin data in dynamic analysis

Author:
Shan, Yehua; Zheng, Jian; Liang, Xinquan
Source:
MethodsX 2019 v.6 pp. 322-328
ISSN:
2215-0161
Subject:
shear stress,   etc   ; calcite; equations;     Show all 3 Subjects
Abstract:
... This paper defines a synthetic slip plane as the linear combination of a pair of twinned and untwinned e-planes in a single calcite crystal. This auxiliary slip plane is dependent upon neither the twinned e-plane nor the untwinned e-plane. It can be used together with the twinned e-plane either to further constrain the extents of the compression and tension axes in graphic dynamic analysis or to b ...
DOI:
10.1016/j.mex.2019.02.004

2. Review of nonlinear oscillatory shear flow notations and presentations: polymeric liquids

Author:
Saengow, C.; Giacomin, A.J.
Source:
Current opinion in colloid & interface science 2019 v.43 pp. 26-38
ISSN:
1359-0294
Subject:
shear stress,   etc   ; melting; plowing; polymers; viscoelasticity; viscosity;     Show all 6 Subjects
Abstract:
... We review notations for, along with ways of presenting, the shear stress responses to large-amplitude oscillatory shear flow (LAOS). We find that the Fourier loss and storage viscosities to be the simplest primal notations for interpreting LAOS. The relative intensities provide the best evidence for oscillatory shear entering the large-amplitude regime. Deviation from linear viscoelastic behaviors ...
DOI:
10.1016/j.cocis.2019.02.003

3. Hydraulics characteristics of forward osmosis membrane module boundary based on FBG sensing technology: Hydraulic properties and operating condition optimization

Author:
Bai, Ruzhen; Wang, Jie; Jia, Hui; Zhang, Cheng; Gao, Fei; Cui, Zhao; Yang, Guang; Zhang, Hongwei
Source:
Chemosphere 2019 v.226 pp. 553-564
ISSN:
0045-6535
Subject:
shear stress,   etc   ; fluid mechanics; osmosis; shear strength;     Show all 4 Subjects
Abstract:
... To obtain more information on the hydraulic properties of membrane interface, the fiber Bragg grating (FBG) sensing technology was imported to investigate the effect of feed solution (FS) flow rate, draw solution (DS) flow rate and cross-flow direction on the membrane flux and membrane shear-force distribution of forward osmosis (FO) process. Results from experimental work demonstrated that a non- ...
DOI:
10.1016/j.chemosphere.2019.03.155

4. Shear driven formation of nano-diamonds at sub-gigapascals and 300 K

Author:
Gao, Yang; Ma, Yanzhang; An, Qi; Levitas, Valery; Zhang, Yanyan; Feng, Biao; Chaudhuri, Jharna; Goddard, William A.
Source:
Carbon 2019 v.146 pp. 364-368
ISSN:
0008-6223
Subject:
shear stress,   etc   ; diamonds; graphene; hydrostatic pressure; nanocrystals;     Show all 5 Subjects
Abstract:
... The transformation pathways of carbon at high pressures are of broad interest for synthesis of novel materials and for revealing the Earth's geological history. We have applied large plastic shear on graphite in a rotational anvil cell to form hexagonal diamond and nanocrystalline cubic diamond at extremely low pressures of 0.4 and 0.7 GPa, which are 50 and 100 times lower than the transformation ...
DOI:
10.1016/j.carbon.2019.02.012

5. Instrumented test tube for rapid rheological behaviour of liquids estimation

Author:
Mograne, Med Abderrahmane; Ferrandis, Jean-Yves; Laux, Didier
Source:
Journal of food engineering 2019 v.247 pp. 126-129
ISSN:
0260-8774
Subject:
shear stress,   etc   ; elasticity (mechanics); rheology; ultrasonics; viscosity;     Show all 5 Subjects
Abstract:
... For very small shear rates, many liquids are Newtonian and one of the simplest method to evaluate their viscosity is the so-called “falling-ball method”. Classically, a ball falling in a large tube, is optically observed and evaluation of its fall time enables simple deduction of the velocity, leading to shear viscosity estimation. In this communication, the tracking of a falling ball was made in ...
DOI:
10.1016/j.jfoodeng.2018.12.007

6. Failure conditions of solid wood on off-axis compression testing

Author:
Yoshihara, Hiroshi
Source:
Holzforschung 2019 v.73 no.3 pp. 251-258
ISSN:
1437-434X
Subject:
shear stress,   etc   ; compression strength; prediction; trees; wood;     Show all 5 Subjects
Abstract:
... Off-axis compression tests (OACT) were conducted on solid wood from six tree species, and the relationship between the off-axis compressive strength (OACStr) and the off-axis angle was predicted under the conventional Hill-type quadratic failure conditions, off-axis special failure conditions, and under a condition proposed in this study, which contains terms of interaction between the normal and ...
DOI:
10.1515/hf-2018-0089

7. Accurate methodology to determine slip velocity, yield stress and the constitutive relation for molten chocolate

Author:
Talansier, Emeline; Bacconnier, Audrey; Caton, François; Chastel, Carine; Costa, Lucy; Gunes, Deniz Z.; Roux, Denis C.D.
Source:
Journal of food engineering 2019 v.244 pp. 220-227
ISSN:
0260-8774
Subject:
shear stress,   etc   ; chocolate; equipment; liquids; melting; protocols;     Show all 6 Subjects
Abstract:
... Concentrated soft materials like molten chocolate often has the ambiguity of behaving like a solid or a liquid depending on the external constraints. Determination of the constitutive relation is often unreliable and consequently the yield stress value too. This difficulty of determining yield stress, particularly when using a standards protocol such as the IOCCC for chocolate, is a consequence of ...
DOI:
10.1016/j.jfoodeng.2018.09.031

8. Fracture evolution in artificial bedded rocks containing a structural flaw under uniaxial compression

Author:
Wang, Ding-Jian; Tang, Huiming; Elsworth, Derek; Wang, Chaoyi
Source:
Engineering geology 2019 v.250 pp. 130-141
ISSN:
0013-7952
Subject:
shear stress,   etc   ; cracking; engineering; isotropy; prediction; rocks;     Show all 6 Subjects
Abstract:
... The Observation and prediction of crack propagation are important in understanding rock behavior in engineering practice. Previous studies have focused on homogeneous and isotropic rocks, but the influence of bedding planes on rock fracture is sparingly documented. In this study, we investigate the fracturing response in uniaxial compression of artificial bedded rocks containing variable-inclinati ...
DOI:
10.1016/j.enggeo.2019.01.011

9. Lattice Boltzmann investigation of non-Newtonian fluid flow through a packed bed of uniform spheres

Author:
Qi, Zheng; Kuang, Shibo; Yu, Aibing
Source:
Powder technology 2019 v.343 pp. 225-236
ISSN:
0032-5910
Subject:
shear stress,   etc   ; models; porosity; powders; viscosity;     Show all 5 Subjects
Abstract:
... Non-Newtonian fluid flows through packed beds are very common in many industries; however, our understanding of this flow system is very limited. In this paper, a parallel Lattice-Boltzmann (LB) model is applied to simulate the power-law fluid flows through a packed bed of porosity 0.366 on a sub-particle scale. The packed bed is generated by means of discrete element method. The flows cover wide ...
DOI:
10.1016/j.powtec.2018.11.046

10. Decreasing the shear stress-induced in-plane molecular alignment by unprecedented stereolithographic delay in three-dimensional printing

Author:
Chakraborty, Patatri; Zhao, Guanglei; Zhou, Chi; Cheng, Chong; Chung, D. D. L.
Source:
Journal of materials science 2019 v.54 no.4 pp. 3586-3599
ISSN:
0022-2461
Subject:
shear stress,   etc   ; models; polymers; resins; viscosity;     Show all 5 Subjects
Abstract:
... The shear stress-induced in-plane molecular alignment in 3D printed polymer is decreased with an increased stereolithographic delay. The molecular alignment represented by the through-thickness (perpendicular to the layers) permittivity (100 Hz) is reduced by 39% to approach that of the bulk polymer. Consequently, the through-thickness piezoelectric coupling coefficient is decreased by 27%. Two ty ...
DOI:
10.1007/s10853-018-3047-0

11. Sitting cross-legged for 30 min alters lower limb shear stress pattern but not flow-mediated dilation or arterial stiffness

Author:
Tremblay, Joshua C.; Stimpson, Taylor V.; Murray, Kristen M.; Pyke, Kyra E.
Source:
Applied physiology, nutrition and metabolism 2019 v.44 no.2 pp. 221-224
ISSN:
1715-5320
Subject:
shear stress,   etc   ; arteries; blood flow; endothelium;     Show all 4 Subjects
Abstract:
... Prolonged sitting decreases lower limb endothelial function via sustained reductions in mean shear rate. We tested whether 30 min of sitting cross-legged differentially impacts superficial femoral artery shear rate pattern, flow-mediated dilation (FMD), and leg pulse-wave velocity (PWV) compared with sitting flat-footed. Sitting cross-legged attenuated the reduction in mean and antegrade shear rat ...
DOI:
10.1139/apnm-2018-0339

12. Determination of the bond–slip relationship of fully grouted rockbolts

Author:
Ma, Shuqi; Zhu, Xing; Qin, Weiwei; Hu, Shugang
Source:
Environmental earth sciences 2018 v.77 no.9 pp. 326
ISSN:
1866-6280
Subject:
shear stress,   etc   ; bolts; encapsulation;     Show all 3 Subjects
Abstract:
... The bond–slip relationship of fully grouted rockbolts with long encapsulation lengths is critical to the bolt axial performances. However, how to properly determine its profile still remains a challenge. It is proposed that the pullout tests of short encapsulated rockbolts could be used to estimate the bond–slip relationships of long rockbolts under the same conditions. This method is based on two ...
DOI:
10.1007/s12665-018-7495-2

13. Enhancing microalgae biofilm formation and growth by fabricating microgrooves onto the substrate surface

Author:
Huang, Yun; Zheng, Yaping; Li, Jun; Liao, Qiang; Fu, Qian; Xia, Ao; Fu, Jingwei; Sun, Yahui
Source:
Bioresource technology 2018 v.261 pp. 36-43
ISSN:
0960-8524
Subject:
shear stress,   etc   ; biofilm; biomass; microalgae;     Show all 4 Subjects
Abstract:
... Attachment of cells to substrate surface is the premise for biofilm formation. To shelter microalgae cells from fluid shear stress and offer larger areas for microalgae attachment, the inerratic microgrooves, which can act as anchor points that offer larger areas for microalgae attachment and induce vortex to protect cells from hydraulic shear stress, were designed and fabricated into substrate su ...
DOI:
10.1016/j.biortech.2018.03.139

14. Stress–dilatancy of gravel for triaxial compression tests

Author:
Szypcio, Zenon
Source:
Annals of Warsaw University of Life Sciences, SGGW 2018 v.50 no.2 pp. 119-128
ISSN:
2081-9617
Subject:
shear stress,   etc   ; gravel; mathematical theory;     Show all 3 Subjects
Abstract:
... The stress–plastic dilatancy relationships for gravel are analyzed based on drained triaxial tests experiments described in literature. For this, Frictional State Theory is used. The characteristic points and stages of shearing may be defined from the analysis of η–Dᵖ relationship. The characteristic points and stages of shearing cannot be identified from ordinary stress–strain, volumetric strain– ...
DOI:
10.2478/sggw-2018-0010

15. Deformation and spallation of shock-loaded graphene: Effects of orientation and grain boundary

Author:
Jian, W.R.; Long, X.J.; Tang, M.X.; Cai, Y.; Yao, X.H.; Luo, S.N.
Source:
Carbon 2018 v.132 pp. 520-528
ISSN:
0008-6223
Subject:
shear stress,   etc   ; crystals; deformation; graphene;     Show all 4 Subjects
Abstract:
... We perform molecular dynamic simulations to investigate the effects of orientation and grain boundary (GB) on shock response of graphene, including shock-induced slip and spall. For compression under different loading orientations, the critical resolved shear stress for slip is constant along a given growth direction (armchair or zigzag) in single-crystal graphene, and spall initiates in elastical ...
DOI:
10.1016/j.carbon.2018.02.070

16. Evaluating the resilience of superhydrophobic materials using the slip-length concept

Author:
Xu, H.; Crick, C. R.; Poole, R. J.
Source:
Journal of materials chemistry 2018 v.6 no.10 pp. 4458-4465
ISSN:
2050-7496
Subject:
shear stress,   etc   ; coatings; hydrophobicity; nanoparticles;     Show all 4 Subjects
Abstract:
... The drive to introduce superhydrophobic materials into real-world applications requires the development of robust and effective surfaces. Efforts to formulate a collective understanding of the design approaches required to engineer resilience are hindered significantly by inconsistencies in the evaluation methods used throughout the literature. Herein, we report a technique that accurately quantif ...
DOI:
10.1039/c7ta10510j

17. On the shear viscosity of dilute suspension containing elliptical porous particles at low Reynolds number

Author:
Liu, Jiajia; Li, Chenggong; Ye, Mao; Liu, Zhongmin
Source:
Powder technology 2019 v.354 pp. 108-114
ISSN:
0032-5910
Subject:
shear stress,   etc   ; Reynolds number; equations; models; powders; viscosity;     Show all 6 Subjects
Abstract:
... In view of the significance of non-spherical and permeable particles in liquid-solid and gas-liquid-solid reactors in industrial processes, it is essential to understand and quantify the rheological properties of multiphase flows in these processes. In this study, we investigate the shear viscosity of dilute suspension containing elliptical porous particles at low Reynolds number Re of O(0) by use ...
DOI:
10.1016/j.powtec.2019.05.068

18. Interface-resolved large eddy simulations of hyperconcentrated flows using spheres and gravel particles

Author:
Fukuda, Tomoo; Fukuoka, Shoji
Source:
Advances in water resources 2019 v.129 pp. 297-310
ISSN:
0309-1708
Subject:
shear stress,   etc   ; friction; gravel; simulation models; water resources;     Show all 5 Subjects
Abstract:
... Interface-resolved large eddy simulations were performed to reproduce hyperconcentrated water-particle mixture flows in a laboratory experiment conducted by Egashira et al. (2001). The flows were simulated at sediment concentrations of 0.196 and 0.444 using spheres and gravel particles. Simulations using gravel with a suitable shape properly reproduced the discharge rates of water and particles as ...
DOI:
10.1016/j.advwatres.2017.10.037

19. Hydrodynamics, erosion and accretion of intertidal mudflats in extremely shallow waters

Author:
Shi, Benwei; Cooper, James R.; Li, Jiasheng; Yang, Yang; Yang, S.L.; Luo, Feng; Yu, Zixian; Wang, Ya Ping
Source:
Journal of hydrology 2019 v.573 pp. 31-39
ISSN:
0022-1694
Subject:
shear stress,   etc   ; coasts; hydrodynamics; littoral zone; sediments; weather; China;     Show all 7 Subjects
Abstract:
... Intertidal flats are shallow-water environments that undergo cyclical variations in water depth, leading to a frequent occurrence of extremely shallow water stages (ESWS; water depths <0.2 m). However, relatively little is known about the hydrodynamic conditions and erosion–accretion processes during ESWS, because the water depth is too shallow to measure in situ sediment dynamic processes using t ...
DOI:
10.1016/j.jhydrol.2019.03.065

20. Computational investigation of the flow inside a Tesla turbine rotor

Author:
Ciappi, L.; Fiaschi, D.; Niknam, P.H.; Talluri, L.
Source:
Energy 2019 v.173 pp. 207-217
ISSN:
0360-5442
Subject:
shear stress,   etc   ; computer software; models; prediction; prototypes; turbulent flow;     Show all 6 Subjects
Abstract:
... Tesla expander is a bladeless turbine suited to low power range applications. In this article, a comparison between the performance prediction, as well as the assessment of the main flow characteristics, of a Tesla turbine working with organic fluids obtained through an in-house 2D code developed in EES environment and a simulation run with a computational fluid dynamics commercial software was do ...
DOI:
10.1016/j.energy.2019.01.158