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A piston, 9 cm in diameter, is used to increase the internal pressure in a cylinder from 0 to 50 MPa. The cylinder, which is made of peak-aged aluminum alloy (yield strength = 500 MPa, Kic = 35 MPaVm), has the following dimensions: length = 20 cm, inner diameter = 9 cm and outer diameter =1 1 cm. The piston-cylinder arrangement suffered a malfunction which caused the cylinder to burst. Post-failure analyses showed the presence of a defect in the form of an elliptical flaw 4.4 mm long at the inner wall, 1.5 mm deep and oriented normal to the hoop stress in the cylinder. Compute the magnitude of the pressure at which the cylinder burst.
What are Engineering Societies based upon the research? List at least 10 discipline specific engineering societies along with their website addresses.
A worker slowly moves a 50-kg crate to the left along a loading dock by applying a force P at corner B as shown. Knowing that the crate starts to tip at about the edge E of the loading dock when a= 200mm, determine:
Consider a 2014-T6 aluminum alloy the S-N behavior. A cylindrical rod of diameter 13.2 mm fabricated from this alloy is subjected to repeated tension-compression loading along its axis.
If there are 50 vehicles on a 4000-ft highway lane and the average time headway between two adjacent vehicles is 2.2 seconds. A) Calculate traffic density in vehicle/mile (vpm) and average space headway in feet/vehicle (fpv).
Ethylene enters a turbine at 10 bar and 450 K, and exhausts at (atm) and 325 K. For mass flow in = 4.5 kg s^-1, determine the cost C of the turbine. State any assumptions you make. Data: H1 = 761.1 , H2 = 536.9 kg^-1, C/$ = (15,200)(1W1/kW)^0.573
Using the Maxwell relations, determine a relation for (∂s/∂P)T for a gas whose equation of state is P(v - b) = RT.
A 2000-lb wheel load is to be supported by aggregate over soil with a maximum bearing pressure of 1000 lb/sqft. What depth of aggregate is needed if the angle theta is 40 degrees
Assume you are an observer standing at a point along a three- lane roadway. All vehicles in lane 1 are traveling at 30 mi/ h, all vehicles in lane 2 are traveling at 45 mi/ h, and all vehicles in lane 3 are traveling at 60 mi/ h.
The force of the expanding gases on a 0.02 kg bullet is given by f=f0-f.1*t . Initially stationary at x=0 , the bullet reaches a speed of 1000 kph by the time it exits the gun
Can it be larger than the largest gas constant in the mixture?
A 0.4 kg mass m is rotating on a horizontal, frictionless surface, its motion constrained by a massless, inextensible string. The distance from the string's attachment point
Given the data below for two alternatives, find the better alternative, if MARR is 8%. alt A |alt B Initial cost $10,000 |$15,000 maintenance cost/ year $1,000 |$500
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