Results 81 to 90 of about 229,260 (299)

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Structural mechanics model and its fracture mode of variable-thickness roof strata in large mining height stope

Meitan kexue jishu
Understanding the fracture movement laws of rock strata plays an important role in the control of mine pressure and the prevention and control of dynamic disasters such as strong mine seismic events in stope.
Yangbo LU, Shaohong YAN, Kunyou ZHOU, Yuanjie WANG, Peng FU, Chenxi ZHANG   +5 more
doaj   +1 more source

An acoustic prion assay

Sensing and Bio-Sensing Research, 2016
An acoustic prion assay has been demonstrated for sheep brain samples. Only five false positives and no false negatives were observed in a test of 45 positive and 45 negative samples. The acoustic prion sensor was constructed using a thickness shear mode
Gordon Hayward, Angela Catford, Aru Balachandran, Warren Stiver   +3 more
doaj   +1 more source

Experimental study on shear dilatancy characteristics of thinly-infilled rock joints

Yantu gongcheng xuebao, 2020
The shear dilatancy has a significant effect on the seepage properties of rock joints, which is influenced by the roughness and normal stress acting on the rock joint surface. However, except for joint the surface roughness and normal stress, the infills
XIAO Wei-min 1, 2, YU Huan 1, 2, ZHU Zhan-yuan 1, 2, LI Rui 1, 2, LIU Wei-chao 1, 2
doaj   +1 more source

Probing viscoelastic properties of a thin polymer film sheared between a beads layer and quartz crystal resonator [PDF]

, 2009
We report measurements of viscoelastic properties of thin polymer films of 10-100 nm at the MHz range. These thin films are confined between a quartz crystal resonator and a millimetric bead layer, producing an increase of both resonance frequency and ...
Ballantine D. S., De Gennes P. G., J. Léopoldès, Royer D., X. Jia   +4 more
core   +3 more sources

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

Study on Influence of Soft Coal Interlayer on Mechanical Properties of Coal Under Uniaxial Compression

Meikuang Anquan, 2020
In order to explore the influence degree and law of soft structure coal interlayer on the uniaxial compression mechanical parameters and failure mode of primary coal samples, based on the macro-scopic mechanical parameters obtained from the indoor test,
FENG Kangwu
doaj   +1 more source

The effect of thickness on fatigue crack propagation in 7475-T731 aluminum alloy sheet [PDF]

Tests were conducted on three thicknesses of 7475-T731 aluminum alloy sheet to investigate the effect of thickness on fatigue crack propagation under constant amplitude loading conditions and on retardation following a single peak overload.
Daiuto, R. A., Hillberry, B. M.
core   +1 more source

Ultralow-frequency collective compression mode and strong interlayer coupling in multilayer black phosphorus

, 2015
The recent renaissance of black phosphorus (BP) as a two-dimensional 2D layered material has generated tremendous interest in its tunable electronic band gap and highly anisotropic transport properties that offer new opportunities for device applications.
Chen, Changfeng, Chen, X. H., Dong, Shan, Ji, Jianting, Jie, Yinghao, Liu, Kai, Luo, X. G., Ma, Xiaoli, Wang, Xiaoqun, Ye, Y. G., Zhang, Anmin, Zhang, Qingming   +11 more
core   +1 more source

Noise radiated by an open cavity at low Mach number: Effect of the cavity oscillation mode [PDF]

, 2019
The present work focuses on the study of noise generation and radiation of an infinite open three-dimensional cavity at low Mach number with laminar upstream conditions that is of interest to understand noise generation mechanisms in wall-bounded ...
Duben, Alexey, Gorobets, Andrei, Lehmkuhl Barba, Oriol, Martín Navarrete, Rocío, Soria Guerrero, Manel   +4 more
core   +2 more sources