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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 rigid closed tank of volume 3 m3 contains 5 kg of wet steam at a pressure of 200 kpa. the tank is heated until the
in a constant-pressure process steam at a 100 psia is presented to the piston of a pump and causes it to travel 3 in.
2/107 The rigid pole and cross-arm assembly is supported by the three cables shown. A turnbuckle at D is tightened until it induces a tension T in CD of 1.2 kN. Express T as a vector. Does it make any differ- ence in the result which coordinate sy..
suppose that two ergonomists rated 21 different cell phones as to their usability the ergonomist agrees with the
consider a steam power plant with reheat that operates on a modified rankine cycle. steam enters the high-pressure
When the firm issued its common stock, what was the market price of the stock per share?
To what extent have the objectives of the project been achieved? Where the objectives have not been fully achieved : why is this ?What do your results or findings tell you, what conclusions can you draw from these?
an appropriate correlation for heat transfer by natural commotion from a honzontal pipe to the atmosphere isnu
It is assumed that a boundary layer begins to develop about 12 km from shore. If the wind speed averages 18 m=s, estimate the thickness of the boundary layer and the shear stress on the surface of the water near the shore.
a tensile force of 4200 lbs is applied to a 9 feet long 8515 brass rod. an elongation of 0.36 inch is measured on the
Analyze the frame in Figure by moment distribution. Determine all reactions and draw the' shear and moment diagrams, locating points, of inflection and labeling values of maximum shear and moment in each span.
what are the necessery calculation required to design a gripper?
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