Engineering, 24.12.2019 04:31 lankfordcrystal81
An aluminum specimen having a circular cross section with a diameter of 20 mm and a gauge length of 50 mm is pulled in tension. using the load- elongation curve provided below answer the following questions.
a) what is the youngs modulus, ys and ts of the aluminum specimen?
b) at the ts the sample is unloaded. what is the new gauge length of the specimen after unloading? what is the ductility?
c) what is the toughness of the material (approximate)?
Answers: 3
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Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
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Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Engineering, 04.07.2019 18:20
Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?
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Engineering, 06.07.2019 03:10
List and describe in sequence the operation process steps for boxf machine?
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An aluminum specimen having a circular cross section with a diameter of 20 mm and a gauge length of...
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