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"(USCS units) fused deposition modeling is used to fabricate a part which is a model of the step pyramid at Sakkara in Egypt (built circa 2670 BCE). The model has six levels or steps, each with a thickness of 0.17 in. The bottom layer = 2.20 in on a side, and successive levels are 1.85, 1.50, 1.15, 0.80, and 0.45 in on a side, respectively. Height of the pyramid = 1.02 in. In the FDM process, layer thickness = 0.010 in and the width of the extrudate deposited on the surface = 0.025 in. The extruder head moves in the x-y plane at a speed of 10 in/sec. A delay of 12 sec is experienced between each layer to reposition the worktable. Compute an estimate for the time required to build the part. Setup time = 35 min. Ignore post-processing time. Using the time estimated to build the part, determine the part cost (in $) if the ABS polymer used in the process costs $9.50/lb and its density = 0.038 lb/in^3, machine hourly rate = $8.00/hr, and labor rate = $30.00/hr but labor will be used only 40% of the build time, mostly for setup."
At what location s will the combined moment of the weights of the man and platform about point B be zero?
If the filling is done rapidly, calculate the final temperature in the small cylinder, (a) assume that oxygen is an ideal gas with Cv= 5R/2 and (b) using accurate thermodynamic data for oxygen.
An insulated tank is divided into two parts by a partition. One part of the tank contains 2.5 kg of compressed liquid water at 60°C and 600 kPa while the other part is evacuated.
Calculate the temperature of a fluid when both a Fahrenheit and a Celsius thermometer are immersed in it, under the following conditions: a) the numerical reading is identical in both thermometers and b) the Celsius reading is numerically twice that ..
a heat engine is operating on carnot cycle. the waste heat from this engine is rejected to a nearby lake at 62f at a
two identical and cfr computers are placed in a redundant configuration. if the system reliability is to be 0.95 at
a 32.2 lb object is dropped from a 100 feet building. determine the velocity and the kinetic energy at the 50 feet
the outer surface of a grill hood is at 47 degrees celsius and the emissivity is 0.93. the heat transfer coefficient
A bicycle floor pump has a cylindrical tube with an inside diameter of 1.0 inches. On the pump's upstroke, a diaphragm check valve opens and brings air in at 13.0 psia. The air is then transferred to the tire during the down stroke. The stroke length..
Determine the rate of metal removal when the wheel is engaged in the work and if the number of active grits per square inch = 200, determine the average chip length and the number of chips formed per time
a shaft is made of a steel alloy having an allowable shear stress of 12 ksi. If the diameter of the shaft is 1.5 in., determine the maximum torque T that can be transmitted. What would be the maximum torque T' if a 1 in. diameter hole is bored thr..
a 2 in diameter straight round shaft is subjected to a bending of 2000 ft.lb a what is the nominal bending stress at
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