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The main shaft in an industrial bread dough mixer is subjected to an alternating bending stress due to the pulley drive system sigma a and an additional mean bending stress when mixing dough sigma m. The shaft is made from a commercially polished steel Phi 1.5" Times 72", with E = 30 msi, Sy = 80 ksi, Su = 100 ksi Construct the S-N curve for the shaft Construct the 106 and 103 constant-life curves (Goodman Diagram) If on average the ratio of mean stress to alternating stress is 1, sigma a/ sigma m = 1, what is the maxi mu m stress allowable to achieve 106 life? (Estimate from your graph) What surface treatment(s) would you recommend to improve shaft fatigue life?
Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for BCC chromium when monochromatic radiation of wavelength 0.0711 nm is used.
a 2 hp electric motor running at 1720 rpm is to drive a blower at a speed of 240 rpm. design a v-belt drive for this
Write a literature review and the title is "the effect of fluid cooling on the performance of building integrated photovoltaic thermal systems. Using some BIPVT prototypes measure their thermal and electrical output and dtermine their effectiveness"
warm air is contained in a piston-cylinder assembly oriented horizontal as shown in figure p.142. the air cools slowly
liquid octane c8h18 at 25ordmc 1.0 atm enters a well-insulated reactor and reacts with air entering at the same
for the fluid power system shown in figure determine the external load f that the hydraulic cylinder can sustain while
a car a is travelling on a straight level road with a uniform speed of 60 km h-1. it is followed by another car b which
an air-standard otto cycle has a compression ratio of 7.5. at the beginning of compression p185 kpa t1320c the mass of
A rigid, insulated vessel contains superheated vapor steam at 3 MPa, 400C. A valve on the vessel is opened, allowing steam to escape. The overall process is irreversible, but the steam remaining inside the vessel goes through a reversible adiabatic e..
glycerin is to be pumped at the rate of 250 gpm throughout a flow system which consist of 1500 feet of horizontal 4
Derive the dynamic equation for RP manipulation of example 6.5 (Introduction to robotics by Craig)by using newton-euler's dyanamics.
a 300-foot-long 6-ft-wide parabolic trough concentrator receives normal solar radiation at 905 wm2. a pipe at the focal
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