Results 31 to 40 of about 40,257 (293)

A Computationally Efficient Multi-Scale Thermal Modelling Approach for PBF-LB/M Based on the Enthalpy Method

open access: yesMetals, 2022
Laser-Based Powder Bed Fusion is one of the most widely used additive manufacturing processes, mainly due to its high-quality output. End users would greatly benefit from a virtual simulation of the process; however, the modelling of the process is very ...
Panagiotis Stavropoulos   +4 more
doaj   +1 more source

A two-fluid helicity transport model for flux-rope merging

open access: yes, 2014
A two-fluid model for canonical helicity transport between merging flux-ropes is developed. Relative canonical helicity is defined here as the gauge invariant helicity of the canonical momentum of a given species, and represents the generalization of ...
You, Setthivoine
core   +1 more source

Optimization of a solar air heater with phase change materials: Experimental and ‎numerical study [PDF]

open access: yes, 2017
In this paper, a solar air heater (SAH) with phase change material (PCM)-based energy storage is ‎investigated. Paraffin was placed underneath the absorber plate as the PCM.
Kianifar, A, Moradi, Ramin, Wongwises, S
core   +1 more source

Phase Transition Thermodynamics of 1,3,5-Tris-(α-naphthyl)benzene: Theory and Experiment

open access: yesMolecules
1,3,5-Tris-(α-naphthyl)benzene is an organic non-electrolyte with notable stability of an amorphous phase. Its glassy and supercooled liquid states were previously studied by spectroscopic and calorimetric methods.
Mikhail I. Yagofarov   +6 more
doaj   +1 more source

Comparison of predicted and experimental DSC curves for vegetable oils [PDF]

open access: yes, 2012
We compare experimental and predicted differential scanning calorimetry (DSC) curves for palm oil(PO), peanut oil (PeO) and grapeseed oil (GO). The predicted curves are computed from the solid–liquid equilibrium modelling and direct minimization of the ...
Carrillo Le Roux, Galo   +2 more
core   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Membranes of semicrystalline aliphatic polyamide nylon 4,6: Formation by diffusion-induced phase separation [PDF]

open access: yes, 1993
The preparation of membranes of nylon 4,6 by diffusion-induced phase separation (DIPS) using formic acid as a solvent and water as a nonsolvent was studied.
Bulte, A.M.W.   +5 more
core   +2 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced 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

Confined/Unconfined Crystallization of Poly(3-Hexylthiophene) in Melt/Solution Environments Containing Carbonic Materials and Correlated Thermal and Structural Behaviors

open access: yesIranian Journal of Materials Science and Engineering, 2020
Confined and unconfined crystallizations of poly(3-hexylthiophene) (P3HT) were studied in the solution-grown supramolecules and melt-grown systems using a differential scanning calorimeter.
S. Agbolaghi
doaj  

Thermal Study of Two Benzotriazole Derivatives

open access: yesU.Porto Journal of Engineering, 2022
An experimental study based on the thermal analysis of 5-methyl-1H-benzotriazole and 5,6-dimethyl-1H-benzotriazole was developed, by using differential scanning calorimetry.
Ana Lima   +2 more
doaj   +1 more source

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