Results 31 to 40 of about 5,548 (262)

Characteristics of gravity waves generated in a convective and a non-convective environment revealed from hourly radiosonde observation under CPEA-II campaign [PDF]

Annales Geophysicae, 2011
Analyses of hourly radiosonde data of temperature, wind, and relative humidity during four days (two with convection and two with no convection) as a part of an intensive observation period in CPEA-2 campaign over Koto Tabang (100.32° E, 0.20° S ...
S. K. Dhaka, R. Bhatnagar, R. Bhatnagar, Y. Shibagaki, H. Hashiguchi, S. Fukao, T. Kozu, V. Panwar, V. Panwar   +8 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

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, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Spatiotemporal Distribution Characteristics Research of Wind Field and Wind Shear on the East Coast of Erhai Lake in the Southeast Edge of Hengduan Mountain Area

Gaoyuan qixiang
Wind profiling radar is a remote sensing device that boasts high spatiotemporal resolution and good consistency with sounding data， capable of probing the vertical distribution of atmospheric wind fields.Dali Airport， situated at the western edge of the ...
Kunlin YANG, Zhiwei GAO, Bing GAO, Tiangui Xiao, Genquan YANG   +4 more
doaj   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Shear Performance of Vertical Joints in Wind Turbine Concrete Towers with Different Interface Processes

Buildings
As a weak part of the concrete tower in wind turbines, the insufficient shear capacity of vertical joints can cause the local shear failure of the tower, reduce the overall bearing capacity and stability of the tower, and lead to safety issues.
Yang Zhou, Ertong Hao, Yudong Ran, Hai Cao, Yane Li, Jike Tan   +5 more
doaj   +1 more source

Environmental Vertical Wind Shear with Hurricane Bertha (1996) [PDF]

Weather and Forecasting, 2003
Abstract Hurricane Bertha (1996) was influenced by vertical wind shear with highly variable direction and magnitude. The paper describes a unique method for determining the vertical tilt of a tropical cyclone vortex using satellite and aircraft data.
openaire   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

ON VERIFICATION OF UPPER-AIR WINDS BY VERTICAL SHEAR AND EXTREMES

Monthly Weather Review, 1961
Abstract The existence of undetected errors in recorded wind observations may have a biasing influence on a statistical study. In the progress of some studies it has been found necessary to reexamine the data being used. A series of upper-air winds has been checked by using available listings of vertical shear and extreme winds. The developed procedure
OSKAR M. ESSENWANGER, ROBERT E. BRADFORD, WILLIAM W. VAUGHAN   +2 more
openaire   +2 more sources

Crosswise Wind Shear Represented as a Ramped Velocity Profile Impacting a Forward-Moving Aircraft

International Journal of Aerospace Engineering, 2019
Abrupt changes in wind velocities over small distances in a lateral or vertical direction can produce wind shear which is known to have serious effects upon the performance of an aircraft.
Mahmood Khalid
doaj   +1 more source

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