Results 21 to 30 of about 3,467 (257)

Study on the optimal parameter matching model of rotary cutting coal-rock for abrasive water jet

Meitan kexue jishu
As coal mining extends deeper, pure water jet technology is gradually unable to meet the demand for coal penetration enhancement under high stress and high coal rock strength conditions.
Jianping WEI, Pengwei XIAO, Huidong ZHANG, Changjiang CHEN, Yong LIU   +4 more
doaj   +1 more source

Study on the Erosion Morphology of Cohesive Soil under the Vertical Impact of a High-Pressure Moving Water Jet

Applied Sciences, 2022
In the in situ leaching process of ionic rare earth ore, high-pressure moving water jet technology has been applied to improve floor leakage problems.
Jian Liu, Xiongdong Lan, Guanshi Wang, Sihai Luo, Zhipeng Yang   +4 more
doaj   +1 more source

Preliminary study on occurrence of composite material delamination processed by abrasive water jet cutting

MATEC Web of Conferences, 2017
The paper presents a preliminary experimental study on processing composite materials (CFRP) using abrasive water jet cutting (AWJC) process, analysing the possibilities of occurrence of material delamination.
Popan Ioan Alexandru, Bâlc Nicolae, Popan Alina Ioana   +2 more
doaj   +1 more source

Progress on the hydraulic measures for grid slotting and fracking to enhance coal seam permeability

International Journal of Mining Science and Technology, 2017
A method of hydraulic grid slotting and hydraulic fracturing was proposed to enhance the permeability of low permeability coal seam in China. Micro-structural development and strength characteristics of coal were analysed to set up the failure criterion ...
Yiyu Lu, Zhaolong Ge, Feng Yang, Binwei Xia, Jiren Tang   +4 more
doaj   +1 more source

A Numerical Simulation of the Underwater Supersonic Gas Jet Evolution and Its Induced Noise

Applied Sciences, 2023
To explore the complex flow field and noise characteristics of underwater high-speed gas jets, the mixture multiphase model, large eddy simulation method, and Ffowcs Williams–Hawking (FW–H) acoustic model were used for simulations, and the numerical ...
Wei Yu, Baoshou Wang, Chun Zhang
doaj   +1 more source

Influence of Processing Parameters on Coating Removal for High Pressure Water Jet Technology Based on Wall-Climbing Robot

Applied Sciences, 2020
The shipbuilding industry is very important for many countries. As an essential process in the shipbuilding industry, surface preparation (or coating removal) is gaining more and more attention.
Feifei Zhang, Xuerong Sun, Zhanpeng Li, Imran Mohsin, Yanan Wei, Kai He   +5 more
doaj   +1 more source

Part I. Experimental Investigation of an Arc-Heated Supersonic Free Jet. Part II. Analysis of One-Dimensional Isentropic Flow for Partially Ionized Argon [PDF]

, 1967
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. I. Experimental Investigation of an Arc-Heated Supersonic Free Jet.
Witte, Arvel Benjamin
core   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Seabed Protection Systems to prevent Scour from High-Speed Ships [PDF]

, 2010
This document reviews the scour protection systems required around port structures where these are to be used for the berthing of vessels powered by water jet systems.
Evans, G.
core  

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source