thermal expansion

(redirected from Thermal expansivity)
Also found in: Encyclopedia.

ther·mal ex·pan·sion

(thĕrmăl eks-panshŭn)
Enlargement caused by heat.
References in periodicals archive ?
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.
The reason is that functionally gradient materials can develop and relax the extra stress which caused by the different thermal expansivity and are supposed to improve the welding strength and constant capacity.
This means that thermal expansivity will drive the phase separation process.
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.
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.
Figure 5 shows how the molecular composite model accounts for the variation of the amorphous phase thermal expansivity with the orientation parameter.