DoITPoMS TLP - Thermal expansion and the bi-material strip

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DoITPoMS > TLP Library > Thermal expansion and the bi-material strip > Results 2

Results: Estimating the boiling temperature of nitrogen

For the steel-aluminum bi-material strip the following measurements were made

δ =	0.021 m
x =	0.189 m

From equation (3) the curvature

Equation

From equation (6), the misfit strain

Equation

And so, from equation (5)

Given an initial room temperatue of 20ºC, this gives the boiling temperature of nitrogen as 20 - 213 = -193ºC (compare accepted figure of -196ºC).



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