thermal expansion

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ther·mal ex·pan·sion

(thĕrmăl eks-panshŭn)
Enlargement caused by heat.
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References in periodicals archive ?
Kumar, "Theory of thermal expansivity and bulk modulus for MgO and other minerals at high temperatures," Physica B, vol.
Kumar, "Thermal expansivity and equation of state up to transition pressure and melting temperature: NaCl as an example," Solid State Communications, vol.
So different degrees of thermal expansivity are generated in different components of the machine tool, and the original relative positions between the components are altered.
That is because of the residual stress of heterogeneous polymers which produced by the differences of the physics properties (thermal expansivity, mechanics), internal structure and inter-solvating performance.
This means that thermal expansivity will drive the phase separation process.
Also at USC, Robert worked with Ray Boyer on the equilibrium and non-equilibrium properties of polymer melts and glasses, general correlations between the glass transition temperature, [T.sub.g], and the thermal expansivity at [T.sub.g].
Thermal expansivity can be explained in terms of anharmonic vibrations of the polymer chains.
In addition to the obvious significance of the time dependence of the volume following various thermal treatments, the thermal expansivity as such represents one of the key variables in this context.
The thermal expansivity and compressibility could be related to the free volume fraction and positive deviations from linearity were noticed in the former.
Compared with engineering plastics (EPs), PLCs have greater mechanical strength and thermal stability, frequently lower melt viscosity, exhibit lower flammability and thermal expansivity, are more stable in vacuum, and resist chemical and radiational degradation (18-20).
Thus the two functions currently available for comparisons of any kind are the thermal expansivity and the bulk modulus.