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Compression molding is used in making parts of complex shapes and varying sizes. Typically, the mold consists of two platens, the bottom platen being attached to the press table and the top platen operated by a hydraulic press. Metal or plastic sheets-for example, for the automotive industry-can be compression-molded in this manner. The main requirement in controlling the press is to position the top platen accurately with respect to the bottom platen (say, with a 0.001 in. or 0.025 mm tolerance), and it has to be done quickly (say, in a few seconds). How many degrees of freedom have to be sensed (how many position sensors are needed) in controlling the mold? Suggest typical displacement measurements that would be made in this application and the types of sensors that could be employed. Indicate sources of error that cannot be perfectly compensated for in this application
If the Larson-Miller parameter correctly correlates the data, a plot of data at constant stress (therefore constant P) of log (t) versus 1/T also would be a straight line.
image text transcribed for accessibility write the combustion equation for the complete combustion of methane in a
one way to put a steel wheel on a steel axel for example on a railroad car is to heat the wheel until it slides on the
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IN FE analysis, What is effect of modeling a plane stress as plane strain and vice a versa?
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Consider a 210-MW steam power plant that operates on a simple non-ideal Rankine cycle, where the isentropic efficiency for both the turbine and the pump is 85%. Steam enters the turbine at 10 MPa and 500C and is cooled in the condenser at a pressure ..
The space between two 6 in. long concentric cylinders is filled with glycerin (viscosity = 8.5X10-3 lb s/ft2). The inner cylinder has a radius of 3 in. and the gap width between the cylinders is 0.1 in. Determine the torque AND power required to rota..
Air with a mass of 0.5 kg, contained inside a piston-cylinder device with an initial pressure of 5 bar and initial volume of 0.1 m3, undergoes a thermodynamic cycle consisting of 3 processes as follows:
Determine the magnitude of the load, the acceleration of the load when it is 25 mm from the equilibrium position and (c) the tension in the spring when the load is 25 mm from the equilibrium position.
a cyclist is traveling at 8ms when she encounters a hill with 2 grade assume the elevation increases by 2 for every 100
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