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(a) Describe a possible method to estimate the activation energy of densification during liquid phase sintering.
(b) What are the assumptions you made for the estimation?
(c) What is the activation energy of densification in the pore filling theory?
a mass-spring-damper system has a mass of 100 kg. its free response amplitude decays such that the amplitude of the
Water with a specific volume of 0.001 m3/kg flows through a pipe at 5 kg/sec entering the pipe with an initial velocity of 100 m/sec and exiting at 50 m/sec. The exit of the pipe is 100 m above the inlet. The pipe is well insulated and the power requ..
a new alloy used for construction of artificial hops is co20cr10mo. calculate the mpole fractions and mass fractions of
the diagram shows a rigid gate oab which is hinged at o and rests against a rigid nbspsupport at b. calculate the
Compute points on the velocity profile from the tube wall to the centerline of a plastic pipe, 125 mm OD x 7.4 mm wall, if the volume flow rate of gasoline (sg = 0.68) at 25°C is 3.0 L/min. Use increments of 8.0 mm and include the velocity at the ..
steam enters an insulated nozzle with a velocity of 500 ms and a pressure of 5.0mpa and a temperature of 600 degrees
determine the frequency of the rotor currents
A fiber-reinforced composite material is produced, in which tungsten fibers are embedded in a Nb matrix.
A wheelof radius 10 cm can rotate freely about its center as shown in figure. A string is wrapped over its rim and is pulled by a force of 5.0 N. It is found that the torque produces an angular acceleration 2.0 rad/s2 in the wheel. Calculate the m..
For the cylinder-piston shown, piston is initially resting on the lower stops. The cylinder contains 1 kg of water at 1 bar and x = 0.64. A pressure of 3 bars is required to move the piston. The system is now heated until the water reaches 600° C.
Methane is completely burned with 20% excess air, with 30% of the carbon going to CO. What is the partial pressure of the CO in the stack gas if the barometer reads 740 mm Hg, the temperature of the stack gas is 300°F
In Figure 14.40a, for the anchor slab in sand, H 5 1.52 m, h 5 0.91 m, B 5 1.22 m,S9 5 2.13 m, f9 5 308, and g 5 17.3 kN/m3. The anchor plates are made of con- crete and have a thickness of 76 mm. Using Ovesen and Stromann's method, calculate the u..
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