Problem #1 Estimate the endurance strength of a 1.5-in-diameter rod of AISI 1040 steel having a...
Estimate the endurance strength (Se) of a 1.47-in-diameter (d) rod of AISI 1040 steel having a machined finish and heat-treated to a tensile strength ( Sut) of 118 kpsi, loaded in rotating bending. Obtain the parameters for Marin surface modification factor from Table 6-2. The endurance strength is kpsi.
Estimate the endurance strength (Se) of a 1.54-in-diameter (d) rod of AISI 1040 steel having a machined finish and heat-treated to a tensile strength (Sut of 116 kpsi, loaded in rotating bending. Obtain the parameters for Marin surface modification factor from Table 6-2. The endurance strength is kpsi.
Estimate the endurance strength (Se) of a 1.56-in-diameter (d) rod of AISI 1040 steel having a machined finish and heat-treated to a tensile strength ( Sut) of 106 kpsi, loaded in rotating bending. Obtain the parameters for Marin surface modification factor from Table 6-2. The endurance strength is kpsi.
Estimate the endurance strength (Se) of a 1.56-in-diameter (d) rod of AISI 1040 steel having a machined finish and heat-treated to a tensile strength ( Sut) of 106 kpsi, loaded in rotating bending. Obtain the parameters for Marin surface modification factor from Table 6-2. The endurance strength is kpsi.
I don't how to solve itEstimate the endurance strength of a rod with a 1.5-inch diameter and is
made of AISI 1040 steel having been quenched and tempered at 205 C
(400 F), ground finished, and loaded in rotating bending.
4. Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340 Cr-Mo-Ni steel capable of being heat-treated to a tensile strength of 260 kpsi. The other is a plain carbon steel AISI 1040 with an attainable Sut of 113 kpsi. If each rod is to have a size giving an equivalent diameter de of 0.75 in., is there any advantage to using the alloy steel for this fatigue application?
The shaft shown is made of AISI 1040 CD steel. It is machine finished and is subjected to a repeated bending stress of 15ksi. The diameter at the shoulder is 1.3in and will be used at a temperature of 400F. Estimate: (a) The endurance limit at 95% reliability (b) Endurance strength at 105 cycles and show on S-N plot 10 (c) Plot the design region by Modified Goodman theory and determine if failure is by yield or fatigue (d) Find the factor of safety...
QUESTION 1 Calculate the actual endurance strength in MPa, of cast steel bar having an endurance strength of 306 MPa subjected to reversed, repeated, bending load. The bar will be machined to a rectangular cross section of 38 mm by 51 mm, Take the values of the factors as below: Cm -0.8 and Cst =1.0 and CR=0.81 & Cs - 0.85
A cylindrical rod of 1040 steel having originally 11.4 mm in diameter is cold-worked by drawing (i.e. pulling through a die with a hole smaller than the original rod cross section). The circular cross section will be maintained during deformation. The deformed steel is desired to have tensile strength in excess of 825 MPa and ductility of at least 12% EL. The final diameter must be 8.9 mm. Explain how this may be accomplished.
load. a) Estimate the beam endurance limit b) Estimate the fatigue strength at 10000 cycles c) Estimate the expected life corresponding to 55kso completely bending stress. Problem #1 - An AISI 1045 steel beam is subjected to a completely reversing bending