Results 31 to 40 of about 17,264 (307)

Performance of Liquid Nitrogen (LN2) on Machining Pure Titanium (Grade 2): A Comparative Study [PDF]

MATEC Web of Conferences
The biggest challenge for manufacturing industries is machining super alloys due to their properties. Titanium grade 2 also comes under the category of difficult cut material.
Chintalapudi Ravikiran, Burri Srinivasa Reddy, Murugesen Pradeep Kumar, M Ganesh, G Vidya   +4 more
doaj   +1 more source

Design and Analysis of Cryogenic Cooling System for Electric Propulsion System Using Liquid Hydrogen

Energies, 2023
As the demand for eco-friendly energy increases, hydrogen energy and liquid hydrogen storage technologies are being developed as an alternative. Hydrogen has a lower liquefaction point and higher thermal conductivity than nitrogen or neon used in general
Gi-Dong Nam, Hae-Jin Sung, Dong-Woo Ha, Hyun-Woo No, Tea-Hyung Koo, Rock-Kil Ko, Minwon Park   +6 more
doaj   +1 more source

Study on the Cooling and Lubrication Mechanism and Properties of Soybean Oil-Based MQL and Different Cryogenic Media in Titanium Alloy Processing

Lubricants
The machining of Ti-6Al-4V thin-walled parts is characterized by high cutting temperatures, significant force fluctuations, and complex thermomechanical coupling.
Zhiyong He, Dongzhou Jia, Qi Gao, Xiaoqiang Wu, Lan Wu, Yongqiang Fu   +5 more
doaj   +1 more source

Cryogenic spray quenching of simulated propellant tank wall using coating and flow pulsing in microgravity

npj Microgravity, 2022
In-space cryogenic propulsion will play a vital role in NASA’s return to the Moon mission and future mission to Mars. The enabling of in-space cryogenic engines and cryogenic fuel depots for these future manned and robotic space exploration missions ...
J. N. Chung, Jun Dong, Hao Wang, S. R. Darr, J. W. Hartwig   +4 more
doaj   +1 more source

Review of new developments in machining of aerospace materials

Journal of Machine Engineering, 2021
The paper presents an update of the recent literature on advances in machining of difficult to machine materials such as nickel and titanium-based alloys, and composites used in aeroengine and aerostructure applications.
Krzysztof Jemielniak
doaj   +1 more source

Optomechanical coupling between ultracold atoms and a membrane oscillator [PDF]

, 2014
In this thesis, I report on the realization of a hybrid optomechanical system in which ultracold atoms are coupled to a micromechanical membrane. The atoms are trapped in the intensity maxima of an optical standing wave formed by retroreflection of a ...
Korppi, Maria
core   +1 more source

Laser-induced rotation and cooling of a trapped microgyroscope in vacuum

, 2013
This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC grant numbers: EP/J01771X/1 and EP/G061688/1)Quantum state preparation of mesoscopic objects is a powerful playground for the elucidation of many physical ...
Arita, Yoshihiko, Mazilu, Michael, Dholakia, Kishan   +2 more
core   +1 more source

Residual Stresses in Machining of AISI 52100 Steel under Dry and Cryogenic Conditions: A Brief Summary [PDF]

, 2014
17th Conference on Material Forming (ESAFORM) - FinlandResidual stress is one of the most important surface integrity parameter that can significantly affect the service performance of a mechanical component, such as: contact fatigue, corrosion ...
OUTEIRO, José, BATISTA, A.C., BATISTA, Antonio, UMBRELLO, Domenico, CARUSO, SERAFINO, MARTINS DO OUTEIRO, Jose Carlos   +5 more
core  

Process Mechanics and Surface Integrity Induced by Dry and Cryogenic Machining of AZ31B-O Magnesium Alloy [PDF]

, 2013
The corrosion resistance of magnesium alloys depends mainly on its surface integrity. Previous experimental studies have shown that machining can induces small (nano-scale) grain size, compressive residual stresses and basal plane crystallographic ...
Fromentin, G., GERMAIN, Guénaël, Germain, G., Batista, A.C., POULACHON, Gerard, G. Germain, BATISTA, Antonio, G. Poulachon, ROSSI, FREDERIC, Outeiro, J.C., OUTEIRO, José, G. Fromentin, FROMENTIN, Guillaume, A.C. Batista, F. Rossi, Poulachon, G., Rossi, F., MARTINS DO OUTEIRO, Jose Carlos, J.C. Outeiro   +18 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source