Results 131 to 140 of about 118,014 (304)
Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics
Advanced Science, EarlyView.We construct hierarchical muscles by plying nylon fibers around a heating wire. The hierarchical muscle shows a J‐shaped passive curve, which shows benefit in antagonistic muscle pair and work accumulation mechanism. We also develop a computational, first‐principle model to understand the physics of both active actuation stroke and passive J‐curve ...
Samuel Tsai +15 more
wiley +1 more source
Force Convection Heat transfer from a Different Cross Section Cylinder Embedded in Porous Media
مجلة النهرين للعلوم الهندسية, 2017 This research presents an experimental study of forced convection heat transfer for laminar steady flows in a duct filled with saturated porous media glass balls.The heater model consists of a circular cylinder , square cylinder and triangular cylinder ...
Suhad A. Rasheed, Jasim M. Abood
doaj
Advanced Science, EarlyView.This study demonstrates that in high‐alloy systems, nanoclusters with high solute tolerance can effectively suppress compositional segregation. This mitigation leads to a concurrent 18.7% increase in strength and 41.5% improvement in ductility, which is attributed to a shear‐bypass synergistic strengthening mechanism. The findings provide a new pathway
Wei Yu +10 more
wiley +1 more source
A forced convection of water aluminum oxide nanofluid flow and heat transfer study for a three dimensional annular with inner rotated cylinder. [PDF]
Sci Rep, 2022 Usman, Memon AA, Alghamdi M, Muhammad T.
europepmc +1 more source
, 2007 Successful applications of the Kruskal-Segur approach to interfacial pattern formation have remained limited due to the necessity of an integral formulation of the problem.
Ben Amar M. +9 more
core +1 more source
Deformation‐Induced Formation of Stray Grains in Additive Manufacturing of Single Crystals
Advanced Science, EarlyView.Stray grain formation severely limits the additive manufacturing of single‐crystal alloys. By integrating in situ synchrotron techniques, ex situ characterization, and multi‐scale multi‐physics modeling, the authors reveal that stray grains originate from dislocations at the solid‐liquid interface, rather than thermal supercooling in conventional ...
Dongsheng Zhang +11 more
wiley +1 more source
Evaluation of Active Heat Sinks Design under Forced Convection-Effect of Geometric and Boundary Parameters. [PDF]
Materials (Basel), 2021 Silva EC, Sampaio ÁM, Pontes AJ.
europepmc +1 more source
Advanced Science, EarlyView.Inspired by the mimosa, this study develops a flexible triboelectric nanogenerator with a novel microneedle array and battery‐mimetic architecture. The device introduces a spontaneous charge self‐regulation mechanism that confines the electric field below the air breakdown threshold, and achieves an outstanding charge density of 396.50 µC m−2 ...
Hanpeng Gao +7 more
wiley +1 more source
SPTV sheds light on flow dynamics of fractal-induced turbulence over a plate-fin array forced convection. [PDF]
Sci Rep, 2022 Hoi SM, Ooi EH, Chew IML, Foo JJ.
europepmc +1 more source
Directional solidification of Pb-Sn eutectic with vibration [PDF]
Pb-Sn eutectic alloy was directionally solidified at 1.4 to 3.2 cm/hr with forced convection induced by axial vibration of the growth ampoule with a frequency of 10 to 40 Hz and an amplitude of 0.5 to 1.0 mm.
Banan, Mohsen +2 more
core +1 more source