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A pressure vessel is constructed with a diameter of d = 18 and a length of L = 6. The vessel is to be capable of withstanding an internal pressure of p = 1000 psi, and the wall thickness is such as to keep the nominal hoop stress under 2500 psi. However, the vessel bursts at an internal pressure of only 500 psi, and a micrographic investigation reveals the fracture to have been initiated by an internal crack 0.1 in length. Calculate the fracture toughness (KIc) of the material.
a which bearing has higher starting torque rolling element bearing or journal bearing? justify your answer.b when
mechanical vibrations a helical spring of stiffness k is cut into two halves and a mass m is connected to be 0.5 s. if
In a particular fission event, a thermal neutron produces fission of a U-235 atom. For this particular event, the fission products Br-90 and Xe-143 are produced as well as 3 neutrons. How much energy in MeV is produced from this event?
a well-insulated piston-cylinder device contains 0.05 m3 of steam at 300 kpa and 150oc. steam is now compressed in a
you have a bevel gear and shaft and you have to find the maximum load that can be applied on it. what type of
the waveform from a mechanical vibration is sensed by a velocity-sensitive vibrometer. the oscilloscope trave indicates
suppose a cube of aluminum which is 1.00 cm on a side accumulates anet charge of 2.50 pc. a what percentage of the
Air enters a well-insulated turbine operating at steady-state conditions with negligible inlet velocity, 4 MPa, and 100°C. The air expands to an exit pressure of 100 kPa. The exit velocity and temperature are 90 m/s and 100°C, respectively. The diame..
1 a 3-inch nominal size cast iron pipe has an actual inside diameter of 3.58 inches. the pipe is 5000 feet long and
steam expands in a turbine steadily at a rate of 25000 kgh entering at 6 mpa and 450degc and leaving at 20 kpa as a
If the side of the platform is a and the stiffness of each wire is k, determine the period of vertical vibration of the platform.
the average accelerations of a us navy fighter jet takeoff to an us air force fighter jet takeoff are very different.
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