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A structural member is made from a steel that has KIc = 180 MPa√m and yield, strength 1050 MPa. In service it should neither break nor deform plastically, be- cause either would be considered a failure. Assume f = 1.0. If there is a preexisting surface crack of a = 4 mm, at what stress will the structural member fail? Will it fail by yielding or fracture?
a rigid tank is connected by a valve to a supply line where refrigerant at 1.4 mpa and 100 degrees celsius flows
Measure the load required to fail a 0 degree, 90 degree oriented CFRC samples. Report the data (width and thickness of the sample, load in N and deflection in mm).
determine the ocean depth at which the water becomes supercritical. assume the density of the water is that of fresh
a closed and rigid tank with 1.5 m3 volume initially contains saturated vapor refrigerant 134a at 50deg c. the system
find the natural frequencies of oscillation of the double-pendulum below where m1=m2=m, and L1=L2=L.
how condenser can increase the power developed? and what is back pressure how it will effect the plant efficiency and
Hydrostatic relation, An empirical formula relating pressure and density for seawater w/ temperature held constant is
A 20 MW back-pressure steam turbine receives steam at stagnation pressure of 4 MPa and stagnation temperature of 300oC, exhausting from the last stage at stagnation pressure of 0.35 MPa. The turbine isentropic efficiency is 0.884, and mechanical loss..
water is pumped from a lower reservoir to a higher reservoir by a pump that provides 21 kw of shaft power. the free
boxes are sitting on a conveyor belt as the conveyor is turned on moving the boxes toward the right. the belt reaches
consider two very large parallel plates. the bottom plate is warmer than the top plate which is held at a constant
the piston has no mass and no friction. there is 2 kg of water and the initial temp is 99.61 c and initial volume is
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