Register to reply

Is there a method of lowering linear expansion of a material?

by ShiningLegend
Tags: expansion, linear, lowering, material, method
Share this thread:
ShiningLegend
#1
Dec7-12, 11:47 PM
P: 3
Hi,

I was just wondering if it was possible to change the linear expansion (and expansion in volume as volume expansion is three times the linear expansion) of a certain material. The coefficient being;

a = (Final Length - Initial Length)/ (Initial length) * (ΔT)


Is it possible to engineer a material to expand greater at lower temperature levels?
Phys.Org News Partner Physics news on Phys.org
Researchers study gallium to design adjustable electronic components
Gadolinium-based material that can be cooled by varying magnetic field
Experiments explain why some liquids are 'fragile' and others are 'strong'
M Quack
#2
Dec9-12, 05:47 AM
P: 667
In some circumstances it is possible. Invar alloys, for example, are engineered such that magnetostriction compensates thermal expansion over a temperature range near room temperature. This is a very special case (and apparently still not fully understood) that cannot be generalized to other materials.

http://en.wikipedia.org/wiki/Invar

Are you thinking about a special material and temperature range?


Register to reply

Related Discussions
Need help with material expansion question Materials & Chemical Engineering 0
Linear expansion? Or area expansion? Introductory Physics Homework 19
Physics of Balloon Expansion / Rubber, Latex Material Expansion General Physics 0
How do you solve for x using the expansion method? Precalculus Mathematics Homework 4
Linear Expansion related to area expansion Introductory Physics Homework 4