Suppose I want to make a bimetallic strip by welding two thinlayers of copper and aluminum together. When cooled down, whichway will the strip bend? Note: Suppose that the copper was ontop and the aluminum was on the bottom. Will it bend in an "n"shape, or in a "u" shape? Suppose I want to make a bimetallic strip by welding two thinlayers of copper and aluminum together. When cooled down, whichway will the strip bend? Note: Suppose that the copper was ontop and the aluminum was on the bottom. Will it bend in an "n"shape, or in a "u" shape?
Explanation / Answer
When the bimetallic strip is cooled it bends so that the metalof greater expansion is on concave side. When the bimetallic strip is heated it bends so that the metalof greater expansion is on convex side. It will bend in an U shape