Results 81 to 90 of about 236,183 (295)

Shearing of loose granular materials: A statistical mesoscopic model

, 2002
A two-dimensional lattice model for the formation and evolution of shear bands in granular media is proposed. Each lattice site is assigned a random variable which reflects the local density.
A. N. Berker, B. Miller, C. F. Jenkin, E. N. Andrade, F. C. Frank, F. Radjai, F. Radjai, F. Radjai, G. Y. Onoda, H.-B Mühlhaus, J. Bridgwater, J. Schafer, J. Török, J.-N. Roux, János Kertész, János Török, M. Kardar, M. Nicolas, M. Oda, M. Piccioni, O. Reynolds, P. Evesque, R. Khosropour, R. M. Nedderman, S. Luding, S. Ouaguenouni, Stéphane Roux, Supriya Krishnamurthy, T. G. Drake, T. Halpin-Healy, V. K. Horváth   +30 more
core   +1 more source

Shear-banding in drained and undrained triaxial tests on a saturated sandstone ; porosity and permeability evolution. [PDF]

, 2006
International audienceDetailed analysis of shear band formation and shear band microstructure formed in drained and undrained triaxial tests on Fontainebleau sandstone is presented.
Ouffroukh, Hichem, Sulem, Jean
core   +4 more sources

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

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

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Experimental and numerical simulation for shear failure mechanism of silty clay–structure interface

Soils and Foundations
The shear phenomenon between soil and foundation structure is common in foundation engineering. The change in the water content of stratum affects the shear behavior of soil and structure inevitably, especially in the region of cohesive soil with complex
Boxin Wang, Zihao Wang, Wen Zhang, Jingjing Pan, Jiaqi Liu, Qing Wang   +5 more
doaj   +1 more source

Electron-Phonon mechanism for Superconductivity in Na$_{0.35}$CoO$_2$: Valence-Band Suhl-Kondo effect Driven by Shear Phonons

, 2006
To study the possible mechanism of superconductivity in Na$_{0.35}$CoO$_2$, we examine the interaction between all the relevant optical phonons (breathing and shear phonons) and $t_{2g}(a_{1g}+e_g')$-electrons of Co-ions, and study the transition ...
Foussats A., Harrison W. A., Ihara Y., Ihara Y., Ihara Y., Kobayashi Y., Kontani H., Li Z., Lupi S., Mochizuki M., Mukhamedshin I. R., Ning F. L., Singh D. J., Wu D., Yada K., Yang H. -B., Yokoi M.   +16 more
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Microscopic Mechanism of Shear Bands in Amorphous Solids

, 2012
The fundamental instability responsible for the shear localization which results in shear bands in amorphous solids remains unknown despite enormous amount of research, both experimental and theoretical.
Dasgupta, Ratul, Hentschel, H. George E., Procaccia, Itamar   +2 more
core   +1 more source

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