Strain measurement with rosettes

εa   =   -215 με

εb   =  -130 με

εc   =   +460 με

The strain rosette shown was used to obtain normal strain data at a point on the free surface of a machine part. Determine:

  • The strain components εx, εy, and γxy at the point.
  • The principal strains and the maximum shear strain at the point.