Area Thermal Expansion Coefficient
Area thermal expansion coefficient, abbreviated as \(\alpha_a\) (Greek symbol alpha), also known as coefficient of aerial thermal expansion, is the ratio of the change in size of a material to its change in temperature.
Area Thermal Expansion Coefficient FORMULA |
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\(\large{ \alpha_a = \frac { 1 }{ A } \; \frac {\Delta A } {\Delta T} }\) | ||
Symbol | English | Metric |
\(\large{ \alpha_a }\) (Greek symbol alpha) = area thermal expansion coefficient | \(\large{ \frac{in^2}{in^2\;F} }\) | \(\large{ \frac{mm^2}{mm^2\;C} }\) |
\(\large{ A }\) = area of the object | \(\large{in^2}\) | \(\large{mm^2}\) |
\(\large{ \Delta A }\) = area differential | \(\large{in^2}\) | \(\large{mm^2}\) |
\(\large{ \Delta T }\) = temperature differential | \(\large{F}\) | \(\large{C}\) |