The yield strength ơy of low-carbon steel is moderately dependent on the grain size D, and...
Problem 6: Link 2, shown in the figure, is 25 mm wide, has 12-mm diameter bearings at the ends, and is cut from low-carbon steel bar stock having a minimum yield strength of 165 MPa. The end- condition constants are C-1 and C-1.2 for buckling in and out of the plane of the drawing, respectively. a. Using a design factor na 4, find a suitable thickness for the link. b. Are the bearing stresses at O and B of any...
o adjacent and parallel planes of atoms(Gie. The magnitude of the distance between two adjacent and parn lanar spacing dhkl, is a function of the Miller indices and the interp crystal whose lattice parameter is a (unit cell edge length), the relation araters e relation is as follows: ( For BCC iron compute the interplanar spacing for the (220) set of planes (i) Compute the diffraction angle for the (220) set of planes using Brag's low Given for BCC iron:...
2. (10 points) Low carbon steel having a tensile strength 300 MPa and a shear strength 220 MPa is turned at a cutting speed 2.5 m/s. Feed 0.20 mm/rev and depth of cut 3.0 mm. The rake angle 5° in the direction of chip flow. The resulting chip ratio 0.45. Using the orthogonal model to approximate turning, determine (a) the cutting force, (b) thrust force, (c) the friction angle, and (d) material removal rate RMR 73 V2.r d3n -S
I. (SI units) Low-carbon steel with tensile strength-300 MPa, shear strength-220 MPa, and Brinell hardness of 225 HB is turned at a cutting speed-2.5 m/s. Feed-0.20 mm/rev and depth of cut- 3.0 mm. Rake angle - 5° in the direction of chip flow. The resulting chip ratio 0.45. Using the orthogonal model to approximate turning, determine (a) cutting force, (b) feed force, and (c) compute the required power, if mechanical efficiency-80%. (30 points) (Hint: correction factor for the volume specific...
I. (SI units) Low-carbon steel with tensile strength-300 MPa, shear strength-220 MPa, and Brinell hardness of 225 HB is turned at a cutting speed-2.5 m/s. Feed-0.20 mm/rev and depth of cut- 3.0 mm. Rake angle - 5° in the direction of chip flow. The resulting chip ratio 0.45. Using the orthogonal model to approximate turning, determine (a) cutting force, (b) feed force, and (c) compute the required power, if mechanical efficiency-80%. (30 points) (Hint: correction factor for the volume specific...
A notched circular shaft shown is subjected to fully reversed bending. D=12.7mm, d=10.16 mm, and r=0.5mm. The steel material has the following mechanical and fatigue properties: yield strength (σ0)=1000 MPa, ultimate strength (σu)=1200 MPa, the fatigue strength coefficient (σf’)=1600 MPa, the fatigue strength exponent (b)=-0.1, and the fatigue limit (σe)=400 MPa. 5. (20 pts) A notched circular shaft shown is subjected to fully reversed bending. D-12.7mm, d-10.16 mm, and r-0.5mm. The steel material has the following mechanical and fatigue properties:...