A cylindrical tungsten rod will fit exactly in a hole drilled in a plate of 316 stainless steel when both are heated to 130° C. The diameters of the rod and hole at 25°C are 10.000mm and 9.988mm respectively, and the coefficient of linear thermal expansion of 316 stainless steel is 16.0 x10-6/° C. Calculate the coefficient of linear expansion for tungsten.
Here when heated it is the diame that is changing hence "L" in the thermal strain formula (?L=??TL) is taken to be diameter.
Kindly let me know if any doubts.
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