Results 21 to 30 of about 160,836 (309)

Thermal expansion properties of the polycaprolactam nanocomposites reinforced with single-walled carbon nanotubes

open access: yesResults in Physics, 2019
The effect of carbon nanotube loading and aspect ratio on the thermal expansion properties of polymer nanocomposites was investigated in terms of the material properties, configuration, and phase geometry of each individual component.
Junjie Chen, Jiecheng Han, Deguang Xu
doaj   +1 more source

Numerical evaluation of expansion loops for pipe subjected to thermal displacements

open access: yesCurved and Layered Structures, 2021
The thermal expansion can lead to the high stress on the pipe. The problem can be overcome using expansion loops in a certain length depending on the material’s elastic modulus, diameter, the amount of expansion, and the pipe’s allowable stresses ...
Yudo Hartono   +5 more
doaj   +1 more source

On the switching between negative and positive thermal expansion in framework materials

open access: yesMaterials Research Letters, 2019
The control of thermal expansion represents a challenge in materials design. This work shows that the length of the lattice parameter is a key element for controlling thermal expansion. By varying the lattice parameter through external pressure, chemical
Andrea Sanson
doaj   +1 more source

A Modified Kerner Model to Predict the Thermal Expansion Coefficient of Multi-Phase Reinforced Composites Al6092/SiC/LAS [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
In this work, a new supplementary formula was introduced to modify the Kerner model. This supplementary formula enable the Kerner model to predict the thermal expansion coefficient of multi-phase reinforced composites by normalization of the thermal ...
Shihao Zhang, Qinglin Hou, H.Y. Jiang
doaj   +1 more source

The thermal expansion of solids [PDF]

open access: yesPhilosophical Magazine, 1957
From the theory of normal vibrations of a lattice, a practical means of obtaining the equation of state of an ionic solid is developed from which the thermal expansion can be derived. Using previous work by Kellermann, application is made to the case of sodium chloride and the results compared with experiment.
openaire   +1 more source

Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials

open access: yesScientific Reports, 2022
Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams ...
Jingxiang Huang   +2 more
doaj   +1 more source

Fundamentals of Thermal Expansion and Thermal Contraction

open access: yesMaterials, 2017
Thermal expansion is an important property of substances. Its theoretical prediction has been challenging, particularly in cases the volume decreases with temperature, i.e., thermal contraction or negative thermal expansion at high temperatures. In this paper, a new theory recently developed by the authors has been reviewed and further examined in the ...
Zi-Kui Liu, Shun-Li Shang, Yi Wang
openaire   +2 more sources

Thermal expansion, electrical conductivity and hardness of Mn3Zn0.5Sn0.5N/Al composites

open access: yesScience and Engineering of Composite Materials, 2018
Mn3Zn0.5Sn0.5N/Al composites were successfully prepared by sintering at 623 K and 723 K. It is found that the thermal expansion of Al is effectively decreased with the addition of negative thermal expansion material Mn3Zn0.5Sn0.5N, which plays the role ...
Miao Jinjin   +8 more
doaj   +1 more source

Tests and Analysis on Thermal Expansion Behaviour of Steel Strand used in Prestressed Concrete Structure under Low Temperatures

open access: yesInternational Journal of Concrete Structures and Materials, 2018
This paper presents the results of the tests and analysis on the coefficient of thermal expansion for the steel strand under combined low temperatures and prestressing forces.
Jian Xie, Jia-Bao Yan
doaj   +1 more source

Auxetic-Inspired Honeycomb Macrostructures With Anomalous Tailormade Thermal Expansion Properties Including “Negative” Heat-Shrinking Characteristics

open access: yesFrontiers in Materials, 2021
Negative thermal expansion (NTE) materials and structures exhibit the anomalous property of shrinking rather than expanding when heated. This work examines the potential of multi-material planar re-entrant and non-re-entrant honeycombs to exhibit ...
James N. Grima-Cornish   +4 more
doaj   +1 more source

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