Determine the minimum material yield strength required based on a limit strength design if a factor of safety of 1.5 is required.  Provide your answer in units of MPa to 2 decimal places.

The load for the beam in the image (b) below is X=14.1 KN. Image (a) represents the cross-section of the beam. Determine the maximum tensile bending stress in the beam in MPa.

A cylindrical steel specimen with an original diameter of 12.8 mm is tensile tested tofracture and found to have an engineering fracture strength of 460 MPa. If its cross-sectional diameter at fracture is 10.7 mm, determine the true stress at fracture.

For a steel sheet with k = 500 MPa, ε0= 0.05, n = 0.30, the true strain at necking would be ___________ if tensile necking begins at the maximum load. Choose the best from the choices. (a) 0.25 (b) 0.30 (c) 0.2 (d) 0.15

Convert the strength of selected materials given in the accompanying table from MPa to ksi, where 1,000 lbf/in2 = 1 ksi.Material Ultimate Strength (Mpa) Ultimate Strength (ksi)Steel Machine 550–860 smaller value   larger value   Spring 700–1,900 smaller value   larger value   Stainless 400–1,000 smaller value   larger value   Tool 900 Structural Steel 340–830 smaller value   larger value   Titanium Alloys 900–1,200 smaller value   larger value   Wood (Bending) Douglas Fir 50–80 smaller value   larger value   Oak 50–100 smaller value   larger value   Southern Pine 50–100 smaller value   larger value   Other Aluminum Alloys 100–550 smaller value   larger value   Concrete (Compression) 10–70 smaller value   larger value

A steel sheet with inhomogeneity factor of f0 = 0.995 is deforming in balanced biaxial tension with σ1a and σ2a as principal stresses in the uniform region ‘A’. What is the major principal stress σ1b in the groove ‘B’ at a small effective plastic strain of 0.05 if the material follows σ̅σ̅= 600 (0.004 +ε̅ε̅  )0.2 MPa hardening model. Find the value in MPa.