Results 131 to 140 of about 701,963 (354)

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

A Study of Evaporation Heat Transfer Coefficient Correlations at Low Heat and Mass Fluxes for Pure Refrigerants and Refrigerant Mixtures [PDF]

, 1993
An average R12 refrigerant correlation has been developed for the mass flux range of 25-100 kg/m2-s and the heat flux range of 2-10 kW/m2. Refrigerant mixtures of 80% R22/lO% R141b and 65% R22/35% R123 have also been tested over asjrniJar range of ...
Newell, T.A., Smith, M.K., Wattelet, J.P.   +2 more
core  

Structure of Turbulence in Katabatic Flows below and above the Wind-Speed Maximum

, 2015
Measurements of small-scale turbulence made over the complex-terrain atmospheric boundary layer during the MATERHORN Program are used to describe the structure of turbulence in katabatic flows.
Di Sabatino, Silvana, Fairall, Christopher W., Fernando, Harindra J. S., Grachev, Andrey A., Leo, Laura S., Pardyjak, Eric R.   +5 more
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Error Analyses for the Frequently-Used Calorimeters in Arc Jet

气体物理
The slug calorimeter, the improved slug calorimeter and the water calorimeter are usually chosen to measure the heat flux values on the model surface based on the magnitude of heat flux values.
Kao XU, Lianzhong CHEN, Zhiming CHEN, Dongbin OU   +3 more
doaj   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

Advanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji, Monnamme Tlotleng, Samuel Skhosane, Lehlogonolo R. Kanyane, Abimbola P. I. Popoola, Sisa L. Pityana   +5 more
wiley   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

A comparison of surface sensible and latent heat fluxes from aircraft and surface measurements in FIFE 1987 [PDF]

Surface fluxes of sensible and latent heat over a tall-grass prairie in central Kansas, as measured by 22 surface stations during FIFE 1987, are compared with values gained indirectly by linear extrapolation of aircraft-measured flux profiles to the ...
Kelly, Robert D., Macpherson, J. Ian, Smith, Eric A.   +2 more
core   +1 more source

Effect of heat flux on pitting and passive film of 304SS in 3.5 wt.% NaCl solution

npj Materials Degradation
In this work, the effect of heat flux on pitting corrosion behaviors and passive film properties of 304 stainless steel in 3.5 wt.% NaCl solution were investigated by the self-developed metal heat transfer surface testing system using electrochemical ...
Ze-Yu Zhou, Bo-Kai Liao, Kai Qi, Yu-Bing Qiu, Zhen-Yu Chen, Xing-Peng Guo   +5 more
doaj   +1 more source

General Response Modes of Cylindrical Thermal Contact Conductance to Bidirectional Heat Flux and Temperature Variations

Energies
Cylindrical joints serve as critical pathways for heat flow in various applications, including heat pipes, electronic devices, and fin-tube heat exchangers.
Fanli Liu, Mingyang Ma, Yang Zhang, Qilin Xie, Wenfeng Liang   +4 more
doaj   +1 more source