A straight aluminum wire 30m Long is subject to a tensile stress of 70MPa.
1. Determine the total elongation of the wire.
2. What temperature change would produce the same elongation
Take: Elastic modulus = 200GNM^-2 And temperature coefficient = 25 × 10^-6
l=30 m, 70 MPa,Y=200 GPa
we know that
(b) as per the concept of thermal stress
13.33 This is the temperature difference which will produce above elongation