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Consider the engineering component with a stress concentration which is schematically sketched in Fig. 1.2. The component is subjected to variable amplitude fatigue which consists of constant amplitude stress cycles mixed with periodic overloads. The component is made of a high strength material and the extent of plastic deformation is small compared to the root radius of the notch in the component.
(a) Outline a procedure for the determination of the number of cycles to initiate and propagate the crack ahead of the stress concentration.
(b) Discuss the beneficial or detrimental effects of the overloads on the fatigue life
a draw the shearing force diagram and the moment diagram of the following problem. the beam is indeterminate. you need
WATER FLOWS IN A PIPE AT 3 m/s A valve at the end of the pipe is suddenly closed. determine the pressure rise in the pipe.
The central conductor and the conducting tube carry equal currents of I = 1.05A in opposite directions. The currents are distributed uniformly over the cross sections of each conductor. What is the value of the magnetic field at a distance r = 5.4..
Determine the allowable moment about the horizontal neutral axis that a timber beam with nominal size 50 X 100 can resist without exceeding the allowable stress of 10 MPa. The dressed size is 38.1 X 88.9 mm, I = 0.00000223m^4, and S = 0.0000502 m^3.
A circular PVC plastic (smooth) storm sewer has a diameter of 18 in. At the design flow, it is intended to have a relative depth of 0.8. At what minimum slope can it be laid such that the velocity is at least 2 ft/s at design flow and depositied soli..
a 10.0 inch long 10-guage wire of yellow brass (E=105 GPa) is subjected to an axial tensile force of 400 lbs. Find the normal sress and deformation in the wire. A 10-guage wire has a diameter of 2.588 mm.
A worker needs to enter a confined space to tighten the packing on a leaking argon valve. Describe two procedures that could be used to isolate the argon line and valve prior to starting work.
Two 8-kg blocks A and B resting on shelves are connected by a rod of negligible mass. Knowing that the magnitude of a horizontal force P applied at C is slowly increased from zero
what type of SO2 removal device before (in front of) or after (following) the particle collector would you use?
A frictionless piston-cylinder contains 2kg of nitrogen at 100 kPa absolute and 300 deg K. The system is compressed polyprotically at a 1.4 exponent (n) until the nitrogen reaches a final temperature of 360 deg K.
You must establish the elevation of point B from point A (elevation 216.612 m). A and B are on opposite sides of a 12 lane highway. Reciprocal leveling is used with the following results: Station BS HI FS Elevation BM 130 0.702 188.567
The frame shown is used to support high-tension wires. If W = 200 lb, b = 3 ft, a = 30°, what is the axial force in member HJ?
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