Question

distinguish between linear and volumetric expansion ​

Answer 1

What is the difference between linear thermal expansion and volume expansion? Linear thermal expansion defines the fractional increase in length, whereas the volumetric expansion defines the fractional increase in volume per unit rise in temperature.

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Answer 2

Explanation:

Linear thermal expansion defines the fractional increase in length, whereas the volumetric expansion defines the fractional increase in volume per unit rise in temperature. For an isotropic material the true coefficient of volumetric thermal expansion is equal to three times the true coefficient of linear thermal expansion. For non-isotropic materials this relation can lead to significant deviations.