Results 51 to 60 of about 31,639 (227)

Bubble collapse dynamics near the composite walls: Progress and challenges

Ultrasonics Sonochemistry
Bubble dynamics near the composite walls has become one of the major issues in the fields of aerospace, underwater weapons, and mechanical engineering.
Yichen Zhu, Xiaojian Ma, Ruiquan Zhou, Yuwei Sun, Mindi Zhang   +4 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Spatial-temporal correlation and fluctuating propagation characteristics of bubbles based on a coupled model of oscillation and migration

Applied Ocean Research
Bubble oscillation and migration are complex dynamic processes that have been extensively studied for the applications of ocean engineering. However, the intricate coupling and interactions among various parameters that affect bubble oscillation and ...
Zhipeng Ren, Deyou Li, Zifei Meng, Niannian Liu, Boo Cheong Khoo   +4 more
doaj   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Influence of drag closures and inlet conditions on bubble dynamics and flow behavior inside a bubble column

Engineering Applications of Computational Fluid Mechanics, 2017
In this paper, the hydrodynamics of a bubble column is investigated numerically using the discrete bubble model, which tracks the dispersed bubbles individually in a liquid column.
Amjad Asad, Christoph Kratzsch, Rüdiger Schwarze   +2 more
doaj   +1 more source

Explaining Unwanted Radial Oscillations in Single-Bubble Sonoluminescence [PDF]

Progress in Physics of Applied Materials
This study presents a theoretical model to explain the bubble oscillation phenomenon that occurs after each flash in single-bubble sonoluminescence (SBSL).
Mohamad Mansouri, Farough Molaei, Majid Vaezzadeh   +2 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

Advanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao, Keldy Mason, Mert Gülçür, Rachel Paddock‐Lamb, Prince Alvin Fofanah, Zachariah A. Page, Michael Cullinan   +6 more
wiley   +1 more source

Grouping method for acoustic wave propagation in bubbly liquids

Engineering Applications of Computational Fluid Mechanics
The bubble radii within a bubble cluster typically distribute over a wide range, and bubble dynamics under acoustic excitation are strongly dependent on the radius. To accurately predict the oscillation behaviour of the bubble cluster and the propagation
Yanghui Ye, Zhequan Che, Bowen Zhou, Yuxiang Chen, Yangyang Liang, Guoneng Li   +5 more
doaj   +1 more source

Bubble dynamics near the onset of single-bubble sonoluminescence [PDF]

Physical Review E, 2004
A number of groups have reported measurements of the location in the parameter space of bubble size versus acoustic pressure amplitude of shape- and size-stable bubbles. For air/water systems, a general trend emerges: stable bubbles are found on one of two line paths in this space defined by their range of acoustic pressure.
Thomas, CR, Roy, RA, Holt, RG
openaire   +2 more sources