Results 31 to 40 of about 388,468 (294)

Design of interdigitated transducers for acoustofluidic applications

open access: yesNanotechnology and Precision Engineering, 2022
Interdigitated transducers (IDTs) were originally designed as delay lines for radars. Half a century later, they have found new life as actuators for microfluidic systems.
Shuren Song   +3 more
doaj   +1 more source

Longitudinal Eigenvibration of Multilayer Colloidal Crystals and the Effect of Nanoscale Contact Bridges

open access: yes, 2018
Longitudinal contact-based vibrations of colloidal crystals with a controlled layer thickness are studied. These crystals consist of 390 nm diameter polystyrene spheres arranged into close packed, ordered lattices with a thickness of one to twelve layers.
Boechler, Nicholas   +7 more
core   +1 more source

Complex Contact-Based Dynamics of Microsphere Monolayers Revealed by Resonant Attenuation of Surface Acoustic Waves [PDF]

open access: yes, 2016
Contact-based vibrations play an essential role in the dynamics of granular materials. Significant insights into vibrational granular dynamics have previously been obtained with reduced-dimensional systems containing macroscale particles.
Abi Ghanem, M.   +5 more
core   +1 more source

Relationships between initial unloading slope, contact depth, and mechanical properties for spherical indentation in linear viscoelastic solids [PDF]

open access: yesMaterials Science and Engineering: A, 2005
Using analytical and finite element modeling, we studied conical indentation in linear viscoelastic solids with either displacement or load as the independent variable. We examine the relationships between initial unloading slope, contact depth, and viscoelastic properties for various loading conditions such as constant displacement rate, constant ...
Yang-Tse Cheng, Che-Min Cheng
openaire   +2 more sources

CALCULATION OF THERMAL EXPANSION COEFFICIENT OF MATERIALS IN THERMAL ELASTOHYDRODYNAMIC LUBRICATION OF LINE CONTACT

open access: yesJixie qiangdu, 2022
By combining the thermal elastohydrodynamic lubrication theory, thermoelastic mechanics theory and principle of heat-pressure conversion, a method was presented to solve the material thermal expansion coefficient of solid surface in the thermal ...
LU ZunYou
doaj  

Liquefaction of crushable granular media: A multiscale numerical analysis [PDF]

open access: yesEPJ Web of Conferences
Understanding liquefaction—the loss of shear resistance in granular materials under constantvolume shearing—is crucial for preventing landslides and geotechnical failures.
Cárdenas-Barrantes Manuel   +1 more
doaj   +1 more source

The Morphology of al Droplet in an Ultrasonic Oscillation Field: Kinetic and Equilibrium Thermodynamic Analysis

open access: yesMaterials Research, 2022
Wetting of metal droplet on the solid substrate is a fundamental phenomenon which is applicable to the surface chemistry. When an oscillation field is included in the wetting condition, the wetting process shows significant advancing and receding ...
Wendi Li   +4 more
doaj   +1 more source

Experimental validation of a new biphasic model of the contact mechanics of the porcine hip [PDF]

open access: yes, 2014
Hip models that incorporate the biphasic behaviour of articular cartilage can improve understanding of the joint function, pathology of joint degeneration and effect of potential interventions.
Anderson AE   +21 more
core   +1 more source

Role of grain-level chemo-mechanics in composite cathode degradation of solid-state lithium batteries

open access: yesNature Communications
Solid-state Li-ion batteries, based on Ni-rich oxide cathodes and Li-metal anodes, can theoretically reach a high specific energy of 393 Wh kg−1 and hold promise for electrochemical storage.
Chuanlai Liu, Franz Roters, Dierk Raabe
doaj   +1 more source

A study of normal dynamic parameter models of joint interfaces based on fractal theory

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
The dynamic behaviors of the joint interfaces make a great difference in machine tools, especially in high-end numerical control machines. To provide an assessment of the normal dynamic parameters in contact deformation of elastoplastic solid joint ...
Wenwei LIU   +4 more
doaj   +1 more source

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