Engineering, 27.11.2019 06:31 dailanniiii
Consider a part with the following properties: sut-80 ksi, sy 60 ksi, se 25 ksi (fully corrected this includes all marin factors, whose product is 0.625), and f= 0.9. the expected loads for this part are an alternating von mises stress, σ., of 30 ksi, and a mean von mises stress, c' of 20 ksi. proportional overload is expected. a) draw the modified goodman failure envelope for this part below, labeling the failure lines and the load point. 80t 70 2 60 20 10 0 10 20 30 40 50 60 70 80 mean stress (ksi) b) the part will have finite infinite life because the load point is inside / outside the failure envelope. c) the equivalent alternating stress, si, which can be used to estimate the fatigue life is: (find both graphically and numerically - show all work.) d) calculate the constants a and b for the high cycle fatigue equation, s an
Answers: 1
Engineering, 03.07.2019 14:10
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
Engineering, 03.07.2019 23:20
Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct
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Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Consider a part with the following properties: sut-80 ksi, sy 60 ksi, se 25 ksi (fully corrected th...
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