show all steps and write neat (15 pts) A 1-in diameter solid round bar has a...
A 1-in-diameter solid round bar has a groove 0.1-in deep with a 0.1-in radius machined into it. The bar is made of AISI 1020 CD steel and is subjected to a purely reversing torque of 1800 lbf.in. For the S-N curve of this material, let f = 0.9. (a) Estimate the number of cycles to failure. (b) If the bar is also placed in an environment with a temperature of 750degreeF, estimate the number of cycles to failure.
A 1-in-diameter solid round bar has a groove 0.1-in deep with a 0.1-in radius machined into it. The bar is made of AISI 1020 CD steel and is subjected to a purely reversing torque of 1800 lbf • in. For theS-N curve of this material, let f = 0.9.(a) Estimate the number of cycles to failure.(b) If the bar is also placed in an environment with a temperature of 750°F, estimate the number of cycles to failure.
A solid round bar, 25 mm in diameter, has a groove 2.5-mm deep with a 2.5-mm radius machined into it. The bar is made of AISI 1020 normalized steel and is subjected to a purely reversing torque of 130 N. m. (a) Estimate the number of cycles to failure. (b) If the bar is also placed in an environment with a temperature of 500 degrees C, estimate the number of cycles to failure. 2.5 mm 20 mm 25 mm
2.The shaft shown in the figure is driven by a gear at the right keyways, drive a fan at eh left keyways, and supported by two deep grove ball bearings. The shaft is made of AISI 1020 cold- drawn steel. At steady state speed, the gear transmits a radial load of 230 Ibf and a tangential load of 633 Ibf at pitch diameter of 8 inch. Determine fatigue factor of safety at any potentially critical locations using the DE-Gerber failure...
Problem 1) A 1 in diameter solid round bar has a groove 0.1 in deep with a 0.1 in radius machined into t. The bar is made of AISI 1040 CD steel and is subjected to rotating-bending load and the bending moment is 1800 lbf in. Determine the life of the shaft.
: A 1 in-diameter solid round bar has a groove with a 0.1-in radius machined into it. The bar is made of steel with an ultimate strength of 120 ksi and it is subjected to an axial force that fluctuates between-5.15 kip and 12.85 kip. The static stress concentration factor at the groove is Kt 2.1. (40 points) a) Classify the problem type based on the loading condition. b) Determine the fatigue factor of safety using the Goodman failure criterion....