Engineering, 08.04.2020 02:13 Jackmcvay14
Assume the internal pressure varies cyclically in the cylinder from pmin=0 to Pmax , where Pmax is 60% of the estimated maximum pressure that will lead to failure by yielding as predicted by Tresca criterion. The Paris law for the material is da = 1.6 X 10 "(AK) 9 m/cycle CA a. Find the number of cycles for the crack of initial length 200 = 0.01 m to grow to a length 20 = 0.025 m. b. Find the number of cycles before the crack reaches critical length (i. e life of the part).
Answers: 1
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
Assume the internal pressure varies cyclically in the cylinder from pmin=0 to Pmax , where Pmax is 6...
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