hdjdjner2247 hdjdjner2247 30-03-2020 Engineering contestada 10–25. The 45° strain rosette is mounted on the surface of a shell. The following readings are obtained for each gage: ε a = −200(10−6), ε b = 300(10−6), and ε c = 250(10−6). Determine the in-plane principal strains.