Results 121 to 130 of about 717,284 (399)
Advanced Engineering Materials, EarlyView.Laser powder‐bed fusion (L‐PBF) can produce dense WE43 magnesium alloy parts, but their mechanical properties are limited by a nonhomogeneous microstructure. This study investigates the effects of varying direct aging (T5) and artificial age‐hardening (T6) conditions on microstructure and strength. Optimized T6 treatment significantly improves strength
Prathviraj Upadhyaya +5 more
wiley +1 more source
Entropy scaling for diffusion coefficients in fluid mixtures
Nature CommunicationsEntropy scaling is a powerful technique that has been used for predicting transport properties of pure components over a wide range of states. However, modeling mixture diffusion coefficients by entropy scaling is an unresolved task. We tackle this issue
Sebastian Schmitt +2 more
doaj +1 more source
Two-scale mathematics and fractional calculus for thermodynamics
Thermal Science, 2019 A three dimensional problem can be approximated by either a two-dimensional or one-dimensional case, but some information will be lost. To reveal the lost information due to the lower dimensional approach, two-scale mathematics is needed.
Ji-Huan He, Feiyu Ji
semanticscholar +1 more source
Violation of First Law of Thermodynamics in f(R,T) Gravity
, 2012 In this Letter, we derived the first law of thermodynamics using the method proposed by Wald. Treating the entropy as Noether charge and comparing with the usual first law of thermodynamics, we obtained the expression of entropy explicitly which contains
Jamil, Mubasher +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study focuses on synthesizing equiatomic AlCuNiSi medium‐entropy alloys using mechanical alloying for advanced industrial applications. Continuous milling leads to grain refinement and the formation of stable BCC/FCC solid‐solution phases, resulting in enhanced mechanical properties. A unique Si‐rich solid‐solution phase is observed, which did not
Mustafa Okumuş +2 more
wiley +1 more source
Gravity as a thermodynamic phenomenon [PDF]
arXiv, 2017 The analogy between the laws of black hole mechanics and the laws of thermodynamics led Bekenstein and Hawking to argue that black holes should be considered as real thermodynamic systems that are characterised by entropy and temperature. Black hole thermodynamics indicates a deeper connection between thermodynamics and gravity.
arxiv
, 2014 We construct cosmological solutions of higher spin gravity in 2+1 dimensional de Sitter space. We show that a consistent thermodynamics can be obtained for their horizons by demanding appropriate holonomy conditions.
Krishnan, Chethan +3 more
core +1 more source
Profilometry‐Based Indentation Plastometry Testing of Tungsten at High Temperature
Advanced Engineering Materials, EarlyView.Profilometry‐based indentation plastometry (PIP) allows extraction of stress‐strain curves from indent profiles. Tungsten is of industrial interest but is brittle at room temperature. It does plastically deform at higher temperatures. Excellent agreement is obtained between the two techniques in this regime, but PIP also gives plasticity ...
James Rees Miller +3 more
wiley +1 more source
Constant mixing temperature test of a fin-and-tube latent heat thermal energy storage
Scientific Reports, 2022 Thermal energy accumulation is one of the ways how to optimize heat production processes and how to balance the supply and demand of heat in distribution systems. This article presents a design of a fin-and-tube latent heat thermal energy storage (LHTES),
Petr Jančík +6 more
doaj +1 more source
The dynamics of thermodynamics
Physica D: Nonlinear Phenomena, 1998 Thermodynamic relations are derived from first principles of mechanics for non-equilibrium processes. Since the key role herein is played by the law of increase of entropy, the latter is analyzed at first. It is shown that its derivation for isolated systems does not allow one to say too much about thermodynamic properties in non-equilibrium conditions.
X. de Hemptinne, J. Kumicak
openaire +3 more sources