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In ?at rolling of a sheet or plate, the width does not appreciably change. A sheet of aluminum is rolled from 0.050 in. to 0.025 in. thickness. Assume the von Mises criterion.
A. What is the effective strain, ε, caused by the rolling?
B. What strain in a tension test (if it were possible) would cause the same amount of strain hardening?
How many times more ignition energy is required to achieve ignition of a fuel-air mixture at sea level with T = 298 K than at altitude of 6000 m where pressure P = 47,166 Pa and T = 248 K?
A steam power plant uses an ideal Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 480C. The condenser pressure is 8 kPa. The net power output of the power plant is 100 MW.
Knowing that crank AB has a constant angular velocity of 160 rpm counterclockwise, determine the angular velocity of rod BD and the velocity of collar D when a. delta=0, b. delta = 90.
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
a wind turbine to be mounted on an offshore platform is 20 efficient. in that area the average wind speed is 24 kmh at
The outside wall of a refrigerated storage room is 10m long and 3m high and is constructed with 100-mm concrete blocks ( k=0.935W/m C) and 10 cm of fiber insulation board (k=0.048W/m
a 3-kg stone is dropped from height h and strikes the ground with a velocity of 30ms. a determine the kinetic energy of
an earth satellite which moves in the elliptical orbit shown has a velocityvin space of 20977 kmh when it passes the
A commercial refrigerator with refrigerant- 134a as the working fluid is used to keep the refrigerated space at 235°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/ s and leaves at 26°C.
a flat plate of 15x39 and 0.125 thick sits on an a pedestal that has a surface area of 80 in2 10x8. the plate centered
Taking the temperature of the surrounding surfaces to be 20°C also, determine the rate of heat loss from the steam pipe.
A solid circular shaft made of 304 stainless steel uniformly tapers from a diameter of 1.5 inches to a diameter of 1.0 inches over a length of 3 feet. Objective: If the shaft transmits 100 hp at 2000 RPM, determine the maximum shear stress in the sha..
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