Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1.A polycrystalline Al alloy contains a dispersion of hard particlesof diameter 10-8m and average center to center spacingof 6x10-8m measured in the slip planes. Estimatetheir contribution to the tensile yield strength,σy, of the alloy.
2.The alloy is used for the compressor blades of a smallturbine. Adiabatic heating raises the blade temperature to150 degrees C, ans causes the particles to coarsen slowly. After 1000 hours they have grown to a diameter of 3 x10-8m ad are spaced 18x10-8 m apart. Estimate the drop in yield strength (the shear modulus of Al is26GNm -2 , and b is 0.286nm.
3.Yield stress of sample of brass with large grain size was20MNm-2. The yield stress of an otherwiseidentical sample with grain size of 4micrometer was 120MNm-2. Why did the yield stress increase in thisway? What is the value of β in equation [ τy = (FgbG/α)1/2 d-1/2 =βd-1/2] for the brass?
4.Estimate the tensile strength of the wire and the work required totake 1m3 of the wire to the point of necking
A 500 lb flywheel is shown. A 100 lb block is held by a light cable wrapped around the hub of the flywheel the radius of which is 2 ft. If the system is released from rest and the weight has a velocity of 11 ft/sec after 5 s
You are designing a new thermometer using Galinstan, an alloy of gallium, indium, and tin that is a liquid at normal living temperatures. The coefficcient of thermal expansion is 190*10^-6 (1/kelvin).
The coal has an ash content of 12% by mass. Forty percent of the ash falls out the bottom of the furnace. The rest of the ash is carried out of the furnace with the hot gases into an electrostatic precipitator (ESP).
A water sample has bucarbonate concentration of 220 mg/l ( HCO3- )and the PH of the water is 7.9 > Express the approximate alkalinity of this water as mg/l of CaCO3
A solid shaft with a diameter of .75 in. The subject is torqued at B(35lb*ft clockwise), C(20lb*ft counterclockwise), D(40 lb*ft counter clockwise) and E(25 lb*ft clockwise).
consuder a simply suppurted beam of length 10 feet with concentrated load of 1000lb at the centre of the beam. Draw the bending moment diagram and shear force diagram
A 10 ft layer of normally consolidated saturated clay is found at depth of 20 ft beneath a formation of partially saturated sandy silt with unit weight of 115 lb/ft cubed. Void ratio of the clay is 1.5 and specific gravity is 2.6.
design a cylindrical composite column consisting of some steel rods, and also wrapped in nano-fiber material. The column must support a compressive axial force of 500 kips. The columns length is 5 ft.
The two disks each have a mass of 18 kg and are attached at their centers by an elastic cord that has a stiffness of k= 1.6 kN/m. Determine the stretch of the cord when the system is in equilibrium and the angle of the cord.
A 1.5 m diameter culver (concrete barrel, well - rounded entrance) that is 20m long is installed on a slope of 2 percent. The design discharge is 9.5 m^3/sec and the inlet will be submerged but not the outlet.
What is the minimum distance from the stalled car at which the driver could apply the brakes and still stop before hitting it? Assume coefficient of rolling resistance of 0.013.
The footing has a f'c=3000psi. Assume the the footing base is 5 ft below the grade and the soil is 100 lb/ft with an allowable pressure of 4500lb/ft fy=60,000
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd