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1. What are the origins of chemical segregation in cast products?
2. How can microsegregation be removed?
3. What is macrosegregation? Is there a way to remove it without breaking up the cast structure?
4. What is homogenization? What type of segregation can it remove?
Determine the orientation of the neutral axis and calculate the maximum tensile stress σt and maximum compressive stress σc in the beam. Use the following numerical data: height h= 200 mm, width b 90 mm, constant thickness t = 15 mm, and θp= 19.2°..
In the previous problem, if the foundry desired to improve its quality performance to the 5.0 sigma level in all three measures of DPM, how many defects and defective units would they produce in an annual production quantity of 15,000 castings? As..
given conditions to a jet engine problem. steady flowrate of work 2e7 jspower generated by the turbing exactly equals
the 30 mg aircraft is climbing at the angle theta15 with a thrust t of 180 kn. at the instant shown its speed is 300
Determine the two manometer readings, h and H. (ANS: 0; 0.252 ft)
a straight fin of uniform cross section is fabricated from a material of thermal conductivity k 5 wmk thickness w 20
Show that the four-momentum of the rocket's exhaust in the initial rest system can be written P = γMf v(-1, 0, 0, i), where Mf is the final mass of the rocket. (Note that this result is valid for theexhaust as a whole even though the photons are Do..
A rectangular cavity consists of two parallel, 0.5-m- square plates separated by a distance of 50 mm, with the lateral boundaries insulated. The heated plate is maintained at 325 K and the cooled plate at 275 K. Esti- mate the heat flux between th..
Determine the speed and the mass flow rate at the downstream section where the Mach number is 4.0. Explain your answer in explicit details, and list all steps leading up to your final answer.
a 10-ft steel beam is lowered by means of two cables a amp b distant of 9-ft unwinding at the same speed from overhead
a vertical hydraulic cylinder has a 125-mm diameter piston with hydraulic fluid inside the cylinder and an ambient
a pitot static probe is used to determine the airspeed of an airplane that is flying at an altitude of 6000m. if the
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