Find the toughness of (or energy to cause fracture) for a metal that experiences both elastic and plastic deformation. Assume equation 6.5 for elastic deformation, that the modulus of elasticity is 103 GPa, and that the elastic deformation terminates at a strain of 0.007. For plastic deformation, assume that the relationship between stress and strain is described by equation 6.19, in which the values for K and n are 1520 MPa and 0.15, respectively. Furthermore, plastic deformation occurs between 0.007 and 0.60, at which point fracture occur