The assembly consists of a brass shell (1) fully bonded to a ceramic core (2). The brass shell [E = 96 GPa, 17.4 × 10−6/°C] has an outside diameter of 53 mm and an inside diameter of 33 mm. The ceramic core [E = 260 GPa, 3.5 × 10−6/°C] has a diameter of 33 mm. At a temperature of 14°C, the assembly is unstressed. Assume L = 300 mm. Determine the largest temperature increase that is acceptable for the assembly if the normal stress in the longitudinal direction of the brass shell must not exceed 71 MPa.