The state of stress at a point is given by: o= 80 MPa, oy=100 MPa and tauxv =60 MPa. If the yield strength for the material is 150 MPa, as determined in a uniaxial test, then the maximu shear stress is?

If €, and e y are the maximum and minimum strains, respectively in the neighbourhood of a point in a stressed material, then what is the expression for the maximum principal stress?

A critical point in a part made of a ductile material is subject to the following state of plane stress: 15ksi, 30 ksi, 15 ksi, Ox,min = -35 ksi, Oy,min = 30 ksi, Txy,min = -15 ksi. Ох,max бу,max Тxy,max %3D There are no stress concentrations. The load line is propositional. The material has a yield strength of Sy = 130 ksi, an ultimate strength of Su = 200 ksi, and a fully corrected endurance limit of Sn : 75 ksi. Calculate the: (a) Static factor of safety using the MSSTF, (b) Static factor of safety using the DETF, (c) Fatigue factor of safety using the Soderberg criterion, (d) Fatigue factor of safety using the Goodman criterion, (e) Fatigue factor of safety using the ASME elliptic criterion.

At a point on the free surface of a machine component the strain rosette shown in the figure below