Results 81 to 90 of about 234,615 (298)

Rheology and Shear Band Suppression in Particle and Chain Mixtures

, 2012
Using numerical simulations, we consider an amorphous particle mixture which exhibits shear banding, and find that the addition of even a small fraction of chains strongly enhances the material strength, creating pronounced overshoot features in the ...
Regev, Ido, Reichhardt, Charles
core   +1 more source

Anomalous acoustic reflection on a sliding interface or a shear band [PDF]

, 2003
We study the reflection of an acoustic plane wave from a steadily sliding planar interface with velocity strengthening friction or a shear band in a confined granular medium.
B. Velický, C. Caroli, C. Marone, E.L. Chez, F. Heslot, F. Pignon, G.G. Adams, J. Desrues, J.-C. Géminard, J.H. Dieterich, J.R. Rice, J.T.R. Rice, K. Ranjith, L. Bureau, M. Nosonovsky, M. Nosonovsky, M.L. Blanpied, M.L. Falk, P. Berthoud, P. Coussot, T. Baumberger, T. Baumberger, X. Jia   +22 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Elastic Turbulence in Shear Banding Wormlike Micelles [PDF]

Physical Review Letters, 2010
We study the dynamics of the Taylor-Couette flow of shear banding wormlike micelles. We focus on the high shear rate branch of the flow curve and show that for sufficiently high Weissenberg numbers, this branch becomes unstable. This instability is strongly sub-critical and is associated with a shear stress jump.
Fardin, Marc-Antoine, Lopez, Diego, Crozo, Julien, Grégoire, Guillaume, Cardoso, Olivier, Mckinley, Garett Huw, Lerouge, Sandra   +6 more
openaire   +5 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Shear‐Band Dynamics in Metallic Glasses

Advanced Functional Materials, 2015
The future of metallic glasses as an advanced structural and functional material will to a great extent depend on the understanding and control of their mesoscopic flow defects called shear bands. These defects are sweet‐and‐sour; sweet because they mediate macroscopic plasticity at room temperature, and sour because they quickly promote failure.
Maass Robert, Loeffler Joerg F.
openaire   +2 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Simulations of Fine-Meshed Biaxial Tests with Barodesy

Geosciences, 2018
Recent experimental studies showed that shear band development starts at the beginning of triaxial tests. In experimental testing, it is impossible to obtain a soil sample with a homogeneous void ratio.
Gertraud Medicus, Barbara Schneider-Muntau   +1 more
doaj   +1 more source

Phonon band structures of three-dimensional pentamode metamaterials

, 2012
Three-dimensional pentamode metamaterials are artificial solids that approximately behave like liquids, which have vanishing shear modulus. Pentamodes have recently become experimental reality.
Aude Martin, G. Milton, Martin Wegener, Muamer Kadic, Robert Schittny, Tiemo Bückmann, U. Leonhardt   +6 more
core   +1 more source

Transient shear banding in time-dependent fluids [PDF]

Physical Review E, 2013
We study the dynamics of shear-band formation and evolution using a simple rheological model. The description couples the local structure and viscosity to the applied shear stress. We consider in detail the Couette geometry, where the model is solved iteratively with the Navier-Stokes equation to obtain the time-evolution of the local velocity and ...
Illa, Xavier, Puisto, Antti, Lehtinen, Arttu, Mohtaschemi, Mikael, Alava, Mikko, J.   +5 more
openaire   +7 more sources