Results 31 to 40 of about 31,118 (205)

MicroED data collection and processing. [PDF]

open access: yes, 2015
MicroED, a method at the intersection of X-ray crystallography and electron cryo-microscopy, has rapidly progressed by exploiting advances in both fields and has already been successfully employed to determine the atomic structures of several proteins ...
de la Cruz, M Jason   +6 more
core   +1 more source

Physical Modelling of Cross-Wedge Rolling of Ball Studs [PDF]

open access: yesArchives of Metallurgy and Materials
The publication presents and reviews the results of a physical modelling study of the Cross Wedge Rolling process of ball-studs. The ball-studs was formed in a double system from C45 steel at 1050°C, while the physical modelling process was performed on ...
Ł. Wójcik, Z. Pater
doaj   +1 more source

Study of detonation interactions inside a 2-D ejector using detonation transmission tubing [PDF]

open access: yes, 2010
Study of detonation interactions inside a two-dimensional ejector using detonation transmission tubing was reported. The main objective of the ejector assembly in the study is to make the flow-field as close to 2-D as possible.
G. Jagadeesh   +5 more
core   +1 more source

A Machine Vision-Based Method for Detecting Surface Hollow Defect of Hot-State Shaft in Cross Wedge Rolling

open access: yesMetals, 2022
In order to solve the problems of low detection efficiency and safety of artificial surface defects in hot-state cross wedge rolling shaft production line, a machine vision-based method for detecting surface hollow defect of hot-state shafts is proposed.
Huajie Fu   +4 more
doaj   +1 more source

Runup and rundown generated by three-dimensional sliding masses [PDF]

open access: yes, 2005
To study the waves and runup/rundown generated by a sliding mass, a numerical simulation model, based on the large-eddy-simulation (LES) approach, was developed.
Borrero, J. C.   +4 more
core   +1 more source

Study on the spiral microstructure defect of workpiece with a small area reduction formed via cross wedge rolling

open access: yes工程科学学报, 2018
Local deformation of workpieces is a main process characteristic of cross wedge rolling; thus, it is difficult to cross wedge rolling the workpiece with a small area reduction owing to the weak ability to flow in the axial direction and the significant ...
YANG Cui-ping   +3 more
doaj   +1 more source

Numerical simulations of screw spike, worm and gear rolling [PDF]

open access: yes, 2010
Cross wedge rolling (CWR) is a very efficient technological process which has a favourable effect on properties of rolled products. At the same time, however, this forming technique causes complex non-linear problems resulting from variable contact ...
Pater, Zbigniew   +2 more
core  

Weyl Card Diagrams and New S-brane Solutions of Gravity

open access: yes, 2004
We construct a new card diagram which accurately draws Weyl spacetimes and represents their global spacetime structure, singularities, horizons and null infinity.
A. Papapetrou   +8 more
core   +2 more sources

Modified Cross-Wedge Rolling for Creating Hollow Shafts

open access: yesProcedia Manufacturing, 2018
Abstract Cross-wedge rolling (CWR) is an incremental forming method for producing rotationally symmetric components such as a basic shape of gear shaft or a preform before impression die forging. In CWR the material of a solid cylindrical billet is redistributed in axial direction while the billet diameter is reduced. Conventional CWR cannot be used
Dirk Landgrebe   +3 more
openaire   +1 more source

Simulation of Cross Wedge Rolling and Hot Extrusion-Combined Forming Process for Axle Sleeve

open access: yesMetals, 2023
In this paper, an axle sleeve is formed through a combined cross wedge rolling (CWR) and hot extrusion process, and the combined forming process is simulated via finite element analysis software Deform-3D.
Wenhui Sun, Cuiping Yang
doaj   +1 more source

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