Linear Thermal Expansion

How do I calculate an amount of thermal expansion for a given shape if you
have Coefficient of Linear Thermal Expansion (7.2x105 in my case)
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Isn't that pretty high? At least for metals...
Depends on the units... is the coeff. in cm/°C or inches/°F or..?
In any case it's a differential thing, if it's 5 inches at 20° and 5.1" at 50°...
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Reply to
Tim Williams
Think of your lump of plastic as expanding by 80 parts per million of a dimension per degree C
Then a dimension of 50 length units if subject to 20 degrees C temp rise will expand by 50 X 80/1000000 X 20 = 0.08 so its dimension grows from 50 to 50.08 length units
You're welcome
Brian W
Reply to
Brian Whatcott
First you must know the units for the coefficient. ie... in/ft/deg. C in/in/deg F. depending upon the material. The material expands exactly as stated in the coefficient. Take the distance from point one to point two and apply the coefficient to it.
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