Results 51 to 60 of about 51,741 (265)
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
Low-level jet characteristics over the Arctic Ocean in spring and summer [PDF]
Atmospheric Chemistry and Physics, 2013 Low-level jets (LLJ) are important for turbulence in the stably stratified atmospheric boundary layer, but their occurrence, properties, and generation mechanisms in the Arctic are not well known.
L. Jakobson +5 more
doaj +1 more source
Low‐Level Baroclinic Jets Over the New Arctic Ocean [PDF]
Journal of Geophysical Research: Oceans, 2018 AbstractDuring the Sea State cruise in the fall of 2015, in the Chukchi/Beaufort Sea region, there were five strong (>10 m s−1) surface wind events associated with low‐level atmospheric jets. These jets were analyzed using rawinsonde observations, ship measurements, and a numerical forecast model.
Peter Guest +6 more
openaire +2 more sources
Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy
Advanced Engineering Materials, EarlyView.This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb +6 more
wiley +1 more source
Mesoscale Convective Systems over Ecuador: Climatology, Trends and Teleconnections
AtmosphereResearch on Mesoscale Convective Systems (MCSs) in Ecuador has focused on regional studies. However, it lacks a thorough and general examination of their relationship with the nation’s diverse orography and large-scale phenomena.
Leandro Robaina +3 more
doaj +1 more source
The South America Low-Level Jet: form, variability and large-scale forcings
npj Climate and Atmospheric Science, 2023 Northerly low-level jets (LLJ) along the eastern Andes are important conduits of moisture transport and play central roles in modulating precipitation in South America.
Charles Jones +3 more
doaj +1 more source
暴雨灾害, 2022 Based on CMPAS precipitation products and ERA5 reanalysis datasets, the performance of the ECMWF global high-resolution products (ECMWF) have been analyzed during the typical Meiyu (from 10th June to 20th July) period in 2020.
Wenhui BU, Haoming CHEN, Puxi LI
doaj +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 +5 more
wiley +1 more source
Medium-range Forecast Uncertainty for a Rainstorm Associated with Northeast Cold Vortex
应用气象学报The case study examines the double-rainband torrential rainstorm that occurred in Northeast China on 27 June 2022, focusing on its formation mechanisms and forecasting errors.
Tan Zhenghua +7 more
doaj +1 more source