Results 231 to 240 of about 867,533 (280)

Remelting and bonding of deposited aluminum alloy droplets under different droplet and substrate temperatures in metal droplet deposition manufacture

International Journal of Machine Tools and Manufacture, 2013
Abstract Micro-void and cold lap are the most common defects of 3D components in aluminum alloy droplet deposition manufacture, which have been found to be associated with the poor remelting and metallurgical bonding between droplets under inappropriate droplet and substrate temperatures. To address this problem, the appropriate temperature condition
Xianghui Hou, Le-Hua Qi, He-Jun Li
exaly   +2 more sources

Deposition pattern of drying droplets

Communications in Theoretical Physics, 2021
Abstract The drying of liquid droplets is a common daily life phenomenon that has long held a special interest in scientific research. When the droplet includes nonvolatile solutes, the evaporation of the solvent induces rich deposition patterns of solutes on the substrate.
Yang, Xiuyuan, Jiang, Zechao, Lyu, Peihan, Ding, Zhaoyu, Man, Xingkun   +4 more
openaire   +1 more source

Instability Deposit Patterns in an Evaporating Droplet

The Journal of Physical Chemistry B, 2014
The characteristics of several patterns left after the evaporation of a particle-laden liquid droplet are investigated by using a coarse-grained lattice model. The model includes both evaporative convection and the Brownian motion of weakly interacting particles.
Jung, Narina, Yoo, Chun Sang, Leo, Perry H.   +2 more
openaire   +3 more sources

Lung Deposition of Droplet Aerosols in Monkeys

Inhalation Toxicology, 2008
Nonhuman primates are often the animal models of choice to study the infectivity and therapy of inhaled infectious agents. Most animal models for inhaled infectious diseases use aerosol/droplets generated by an atomization technique such as a Collison nebulizer that produces particles in the size range of 1 to 3 microm in diameter.
Y S, Cheng, H, Irshad, P, Kuehl, T D, Holmes, R, Sherwood, C H, Hobbs   +5 more
openaire   +2 more sources

Monosize droplet deposition as a means to investigate droplet behavior during spray deposition

Metallurgical and Materials Transactions B, 2000
A Rayleigh atomization technique is employed to produce streams of evenly spaced, monosized droplets of molten metal. We study the effects of variations in selected process parameters upon the droplet formation mechanism and the morphology and microstructure of resulting deposits.
S. Q. Armster, Enrique J. Lavernia, J. -P. Delplanque, W. -H. L. Lai   +3 more
openaire   +1 more source

Droplet deposition in an annular geometry

International Journal of Multiphase Flow, 1979
An analytical approach to the problem of droplet deposition in annular flow through an annulus is presented. The underlying theory, due to Hutchinson et al. (1971), allows the droplet deposition to be treated as a diffusion process and the results obtained enable some properties of mass transfer coefficients in non-circular geometries to be explained.
James, P. W., Hutchinson, P.
openaire   +2 more sources

Deposition pattern of interacting droplets

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015
A colloid droplet having pinned contact line forms a ring pattern after drying. The ring pattern of a single droplet shows uniform deposit along the contact line. When two droplets dry adjacent to each other, the deposition pattern is influenced by the presence of the neighboring droplet. The deposition pattern at the nearest region of the two droplets
Tapan Kumar Pradhan, Pradipta Kumar Panigrahi   +1 more
openaire   +1 more source

Evaporative cooling due to a gently deposited droplet

International Journal of Heat and Mass Transfer, 1993
Abstract The transient thermal behavior of a single water droplet gently deposited on the surface of a semi-infinite solid is investigated. A coupled model that solves simultaneously the transient conduction equation for the solid and the liquid to yield the surface temperature and heat flux distributions as well as the description of the droplet ...
M. di Marzo, TARTARINI, Paolo, Y. Liao, D. Evans, H. Baum   +4 more
openaire   +2 more sources

Formation of liquid sheets by deposition of droplets on a surface

Journal of Colloid and Interface Science, 2014
Experiments were done to observe the coalescence of highly viscous liquid droplets (87 wt% glycerin-in-water solutions) deposited onto a flat, solid steel plate. Droplets were deposited sequentially in straight lines or square droplet arrays. Droplet center-to-center distance was varied and the final dimensions of lines and sheets measured from ...
Alireza Dalili, Sanjeev Chandra, Javad Mostaghimi, H.T. Charles Fan, Joseph C. Simmer   +4 more
openaire   +2 more sources

Research on accurate droplet generation for micro-droplet deposition manufacture

The International Journal of Advanced Manufacturing Technology, 2009
Micro-droplet deposition manufacture is a novel direct metal rapid prototyping for building the miniaturized parts. In this paper, the relationship between the droplet diameter and the operating parameters is investigated to obtain the optimal condition for the accurate droplet generation. The droplet generator is designed to adjust the parameters such
Xiao-Shan Jiang, Le-Hua Qi, Jun Luo, Hua Huang, Ji-Ming Zhou   +4 more
openaire   +1 more source