Results 71 to 80 of about 100,835 (255)

Review of Electronic Cooling and Thermal Management in Space and Aerospace Applications

Engineering Proceedings
The continuous miniaturization of electronics, high processing capacity, compact microelectronic devices, and high circuit density contribute to an increasing demand for the efficient cooling of electronics.
Kivilcim Ersoy
doaj   +1 more source

Effects of cooling velocity on multiaxial fatigue behavior of A319 alloy under circular loading conditions

工程科学学报, 2017
The effects of cooling velocity on the multiaxial fatigue properties of A319 alloy under circular loading conditions was studied by using the MTS809 servo-hydraulic testing system and scanning electron microscopy.
DAI Li-quan, HE Guo-qiu, YE Yun, LÜ Shi-quan, LIU Xiao-shan, WANG Qi-gui   +5 more
doaj   +1 more source

Phase-space cooling of ion beams [PDF]

, 1983
We have discussed some properties and limitations of the new techniques of phase-space cooling relevant in nuclear and heavy-ion physics. Many applications seem to be possible in the future. We have tried to indicate some of them. But in order to take full advantage of cooled beams, detectors and experimental techniques will have to be adapted.
D. Möhl, K. Kilian
openaire   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Equity of cooling services of urban green spaces from the perspective of community life circles: Integrating cooling effects, service quality, and resident preferences

Trees, Forests and People
Urban green spaces help mitigate urban heat, yet the equity of their cooling services remains insufficiently examined. Existing equity assessments often emphasize the quantity of green space while overlooking qualitative attributes and resident ...
Zhenfan Liu, Yiwei Han, Hanqing Zheng, Wenjuan Wu, Ming Chen, Donghui Peng   +5 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

A method to reduce air recirculation of the mechanical draft cooling tower row in sunken space under crosswind by tilted fan ducts

Case Studies in Thermal Engineering
Air recirculation is a usual problem for mechanical draft cooling towers under crosswind, leading to the increase of inlet air wet bulb temperature. Some cooling towers need to be installed in sunken space due to the demands for better urban landscape ...
Xiao Chen, Chaoyue Yang, Guang Huang
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source