Engineering, 11.12.2019 22:31 8236
Estimate the theoretical fracture strength (in mpa) of a brittle material if it is known that fracture occurs by the propagation of an elliptically-shaped surface crack of length 0.25 mm that has a tip radius of curvature of 0.004 mm when a stress of 1060 mpa is applied.
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Engineering, 04.07.2019 03:10
What precautions should you take to prevent injuries when dealing with heavy loads?
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Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
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Engineering, 04.07.2019 18:20
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
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Engineering, 04.07.2019 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg β’ k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
Estimate the theoretical fracture strength (in mpa) of a brittle material if it is known that fractu...
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