Thermal Expansion - Superficial i.e. Area

Superficial i.e area temperature expansion - online calculator

Superficial thermal expansion can be expressed as

dA = A₀ γ (t₁ - t₀)         (1)

where

dA = change in area (m²)

A₀ = initial area (m²)

t₀ = initial temperature (^oC)

t₁ = final temperature (^oC)

Online Superficial Thermal Expansion Calculator

A₀ - initial area (m²)

γ - superficial expansion coefficient

t₀ - initial temperature (^oC)

t₁ - final temperature (^oC)

Change in area (dA): (m²)

Final Area (A₁): (m²)

In general the superficial temperature coefficients can be approximated to

 γ  ~= 2 α

where

α =  linear expansion coefficient

Linear Temperature Coefficients - α - of some common metals

• aluminum : 0.000023 (m/m ^oC)
• steel: 0.000016 (m/m ^oC)
• copper: 0.000017 (m/m ^oC)

 

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