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A pressure vessel made of aluminum alloy 2024?T351 (Sy = 325 MPa and Kc = 36 MPa?m1/2) is manufactured for a safety factor of 2.5 considering yielding. However, the material contains cracks through the wall thickness with a crack half?length less than 3 mm. Find the safety factor when considering crack propagation. Assume that the geometric factor ß = 1.
Steam @ 10 MPa, 600 degrees celcius enters the first-stage turbine of an ideal Rankine cycle with reheat. The steam leaving the reheat section of the steam generator is @ 500 degrees celcius
Block B of the mechanism is confined to move within the slot member CD. If AB is rotating at a constant rate of AB = 3rad/s, determine the angular velocity and angular acceleration of member CD at the instant shown.
Whit is the critical crack length in iron according to the Griffith-Orowan equation if surface energy=10^3J/m^2?
Bypass air exits at 600 m/s while combustion air exits at 1000 m/s. What is the thrust in kN of this engine?
The velocity profiles at locations x=0.1, 0.30 and 0.5. Plot contours of u-velocity and v-velocity. How many iterations did it take to get your solution?
question a soap bubble with walls 398 thick floats in air. if this bubble is illuminated perpendicularly with sunlight
question a 80 g frisbee is thrown from a point 0.71 m above the ground with a speed of 10 ms. when it has reached a
consider two identical rooms one room has a refrigerator in it the other does not. all the doors and windows in each
is the average run length performance of a control chart a more meaningful measure of performance than the type i and
Effective Matching of Surface Roughness, Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4
What is a 90 percent confidence interval for the standard deviation of the thickness of a washer produced by this procedure?
Define your system to be the gas in the cylinder, and calculate the work transferred from the surroundings to the system from this expansion. Note that the pressure will change as the expansion takes place.
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