Results 21 to 30 of about 106,647 (265)

A cryogenic dc-dc power converter for a 100kW synchronous HTS generator at liquid nitrogen temperatures

, 2012
A dc-dc converter has been developed for retrofitting inside the vacuum space of the HTS rotor of a synchronous generator. The heavy copper sections of the current leads used for energising the HTS field winding were replaced by cryogenic power ...
Bailey, W.O.S., Jia, C., Wen, Hauming, Jia, Chungjiang, Yang, Y, Yang, Yifeng, Bailey, Wendell, Yang, Y., Jia, C, Forsyth, A., Bailey, W, Forsyth, A; id_orcid, Forsyth, Andrew   +12 more
core   +1 more source

Tribological Behavior of PVD Hard Coated Cutting Tools under Cryogenic Cooling Conditions [PDF]

, 2017
Cryogenic assistance is used to improve machining performance and to enhance tool life under extreme contact conditions (pressure and temperature). This paper focuses on the influence of cryogenic cooling conditions using liquid nitrogen within the ...
YOUSFI, Mohamed, C. Nouveau, OUTEIRO, José, B. Zouhair, M. Yousfi, ZOUHAIR, Badr, NOUVEAU, Corinne, YOUSFI, Mohammed, B. Marcon, MARCON, Bertrand, MARTINS DO OUTEIRO, Jose Carlos, J.C. Outeiro   +11 more
core   +1 more source

Integration of Serum Neurofilament Light Chain and Cortical Dysfunction Improves Diagnostic Accuracy in ALS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether integration of serum neurofilament light chain (NfL) and cortical dysfunction improves diagnostic accuracy in amyotrophic lateral sclerosis (ALS) when applied alongside the Gold Coast criteria (GCC). Methods In this prospective study, 148 participants with suspected ALS were recruited (101 ALS and 47 with ALS ...
Aicee Dawn Calma, Nathan Pavey, Yukiko Tsuji, Amirul Ab Ghapar, Mehdi A.J. van den Bos, Bronwen Orden, Grace Lee, Linda Mekhael, Julie Ryder, Cláudia Santos Silva, David McDonald, Fakhria Kakar, Con Yiannikas, Matthew C. Kiernan, David A. Brown, Parvathi Menon, Steve Vucic   +16 more
wiley   +1 more source

Assessment of residual stresses in ITER CS helium inlet welds fatigue tested at cryogenic temperature [PDF]

, 2019
Proceeding of: 27th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2018 (ICEC-ICMC 2018), September 3-7, 2018, Oxford, United KingdomThe ITER Central Solenoid (CS) consists of six independent wound modules.
Jong, C., Aviles Santillana, I, Jong, C, Libeyre, P, Freudenberg, K., Sgobba, S, Everitt, D., Fernandez Pison, P, Freudenberg, K, Langeslag, Stefanie A. E., Libeyre, P., Sgobba, Stefano, Avilés Santillana, Ignacio, Langeslag, S, Castillo Rivero, S., Everitt, D, Castillo Rivero, S, Fernández Pisón, María del Pilar   +17 more
core   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +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

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  

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

Cryogenic design of the ALUHEAT project

, 2022
S.1015-1022ALUHEAT project aims to build a cryogen-free superconducting induction heater. In this paper, the cryogenic design, which includes heat loss calculations, mechanical analysis, optimization of current leads and description of cooling conditions,
Hiltunen, I., Mikkonen, R., Stenvall, A., Korpela, A., Kalkowski, G., Runde, M., Lehtonen, J., Magnusson, N.   +7 more
core  

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source