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An axle-bearing surface made of high carbon steel has worn beyond its useful life. When it was new, the diameter was 4.00 in. In order to restore it, the diameter was turned to 3.90 in to provide a uniform surface. Next the axle was built up so that it was oversized by the deposition of a surface weld bead, which was deposited in a spiral pattern using a single pass on a lathe. After the weld buildup, the axle was turned again to achieve the original diameter of 4.00 in. The weld metal deposited was a similar composition to the steel in the axle. The length of the bearing surface was 7.0 in. During the welding operation, the welding apparatus was attached to the tool holder, which was fed toward the head of the lathe as the axle rotated. The axle rotated at a speed of 4.0 rev/min. The weld bead height was 3/32 in above the original surface. In addition, the weld bead penetrated 1/16 in into the surface of the axle. The width of the weld bead was 0.25 in, thus the feed on the lathe was set to 0.25 in/ rev. Assuming the heat transfer factor was 0.80 and the melting factor was 0.65, determine
(a) the relative velocity between the work piece and the welding head,
(b) the rate of heat generated at the welding source, and
(c) how long it took to complete the welding portion of this operation.
Calculate the mass absorption coefficient for a solution prepared by mixing 11.00 g of Kl with 89.00 g of water.
determine the fractional error in each component xi so that the contribution from each component to the overall error eSRSS is the same.
The buoy is made from a uniform material having a specific weight of 8.00 lb/ft3. At least 1.50 ft of the buoy must be above the surface of the seawater for safety and visibility. Calculate the maximum allowable weight of the instrument package.
Insulin and several other pharmaceuticals required daily by those suffering from diabetes and other medical conditions have relatively low thermal stability.
determine the average applied force exerted on to the pile hammer. Note because the force is applied over a short time period it can be considered as an impulse force.
a heat engine with a thermal efficiency of 40 receives heat from a reservoir at a temperature of 300of and rejects heat
canon at an angle 30 degree tube is rotating at an axes with anguar velocities w1 and w2 2 and 5 rad/s and tube blows a ball at b with constant rate 7 m/s . what is velocity and acceleration of ball at tube end ball is at distance of 3m from tube ..
a steam turbine operates steadily under the following condions. at the inlet p2.5mpa t450 degrees c and v40 ms. at the
an air conditioner based on the ideal vapor-compression refrigeration cycle uses r134a as the working fluid. states
a 2.5 hp motor is used to move an 200lbf object across a horizontal surface at a velocity of 22 fts in a time period of
a refrigeration cycle having a coefficient of performance of 3.0 maintains a computer laboratory of 18oc on a day when
a turbine accepts superheated steam at 800 psia and 1200 degree f and ejects it as saturated vapor with a pressure of
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