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1) The critical crack length for a through crack in a thick plate of 7150-T651 aluminum alloy that is in uniaxial tension. For this alloy Kic = 25.5 MPa SqRt.(m) and sigma f = 400 MPa. Assume Y = SqRt. (pi)
2) What is the largets size (mm) internal through crack that a thick plate of aluminum alloy 7075-T651 can support at an applied stress of (a) three-quarters of the yield strength and (b) one-half of the yield strength? Assume Y=1
natural gas consists of a mixture of several gases. one example is 84 percent methane 14.8 percent ethane .70 percent
Using the data in Problem , Meredith and Smunt Manufacturing expects sales of pumps to grow by 10% next year. Compute next year's sales and the sales for each quarter.
the automobile has a speed of 80 fts at point a and anacceleration a having a magnitude of 10fts2 acting in the
If it is known that the value of the stress exponent n for this alloy is 8.2, compute the steady-state creep rate at 1300 K and a stress level of 89 MPa.
the air velocity in a duct is measured by a Pitot-static probe connected to a differential pressure gage. if the air is at 13.4 psia absolute and 70 degrees C and the reading of the differential pressure gage is 0.15 psi, determine the air velocit..
A thin electric heater is wrapped around a rod of diameter 3 cm. The heater dissipates energy uniformly at a rate of 1300 W/m. Air at 20°C flows normal to the rod with a velocity of 15.6 m/s. Determine the steady state surface temperature of the h..
at steady state a well-insulated compressor takes in air at 60 degrees f 14.2 lbfin2 with a volumetric flow rate of
a centrifugal fan is to be used to take a flue gas at rest zero velocity and at a temperature of 352.6k and a pressure
a 1kg mass connected to a horizontal spring of stiffness 1031 nm has a dry-sliding friction force of 2 n. the mass is
you are manufacturing a frame for a vehicle out of some aluminum alloy 6061-t451 tubing. the frame is to be welded
in a crank or slotted lever quick mechanism the distance between the fixed centre is 150 mm and driving crank is 75 mm. determine the ration of the time taken of cutting & return strake .
methane ch4 at 25 degree celcius 1 bar enters a furnace operating at steady state and burns completely with 240 of
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